{"Count":84,"Message":"Results returned successfully","results":[{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"CF"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"FL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"FS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"RL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"R"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"RD"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"U"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"DM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"FL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"RL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"FS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"RL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"RD"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"RD"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"DM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"DM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"R"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"R"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"FS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"FL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"FL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"FS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"RL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"WS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"WL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"DMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"HMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"RM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"WS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"WL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"RD"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"R"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"U"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"DM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"RM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"RM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"F"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"F"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"DMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"DMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"WS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"WL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"CF"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"CF"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"U"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"CF"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"F"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"R"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"CF"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"DM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"F"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"RD"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"RM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"HMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"FS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"RD"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"R"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"RM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"WS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"WS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"WL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"F"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"U"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"WL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"U"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"RM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"U"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"FS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"HMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1975","Make":"MACK","Model":"HMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"HMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"DM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"FL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1973","Make":"MACK","Model":"DMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"DMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"CF"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1972","Make":"MACK","Model":"DMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"FL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"F"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1974","Make":"MACK","Model":"HMM"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1976","Make":"MACK","Model":"RL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"WS"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"WL"},{"Manufacturer":"MACK TRUCKS, INCORPORATED","NHTSACampaignNumber":"77V173000","parkIt":false,"parkOutSide":false,"overTheAirUpdate":false,"ReportReceivedDate":"12/10/1977","Component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","PotentialNumberofUnitsAffected":48000,"Summary":"THE FLEX BLADE FANS ON THE INVOLVED VEHICLES MAY DEVELOP CRACKS IN THE LAMINATED STIFFENER AS A RESULT OF FATIGUE DURING OPERATION. IF SUCH A CONDITION EXISTS AND THE CRACKS GO UNDETECTED, CONTINUED OPERATION COULD CAUSE PIECES OF THE STIFFENER TO BREAK OFF.","Consequence":null,"Remedy":"DEALER WILL REPLACE THE ORIGINAL FAN WITH A STEEL FIXED BLADE FAN, FREE OF CHARGE.","Notes":"VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH SIX-CYLINDER ENGINES.SYSTEM: ENGINE COOLING; FAN.CONSEQUENCES OF DEFECT: BROKEN PIECES CAN BE PROPELLED OUTSIDE OF THE FANSHROUD AND WILL PRESENT AN IMMEDIATE DANGER AND POSSIBLE INJURY TO PERSONSSTANDING NEARBY.NOTE: PRIOR TO CORRECTION, VEHICLE SHOULD NOT BE SERVICED WITH THE HOOD RAISEDAND THE ENGINE RUNNING.","ModelYear":"1977","Make":"MACK","Model":"RL"}]}