Known Recalls

Recall campaign · NHTSA 77V173000

Engine and engine cooling: cooling system: fan

MACK TRUCKS, INCORPORATED filed this campaign with NHTSA on 1977-10-12.

Recall campaignNHTSA 77V173000

Engine and engine cooling: cooling system: fan

Component
Engine and engine cooling: cooling system: fan
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
48,000
Reported to NHTSA
1977-10-12
Owners notified
1978-03-23

Defect description

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.

Manufacturer 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.

Scope of coverage

84 model years across 14 models.

ModelYears on record
MACK CF1977 1976 1975 1974 1973 1972
MACK DM1977 1976 1975 1974 1973 1972
MACK DMM1977 1976 1975 1974 1973 1972
MACK F1977 1976 1975 1974 1973 1972
MACK FL1977 1976 1975 1974 1973 1972
MACK FS1977 1976 1975 1974 1973 1972
MACK HMM1977 1976 1975 1974 1973 1972
MACK R1977 1976 1975 1974 1973 1972
MACK RD1977 1976 1975 1974 1973 1972
MACK RL1977 1976 1975 1974 1973 1972
MACK RM1977 1976 1975 1974 1973 1972
MACK U1977 1976 1975 1974 1973 1972
MACK WL1977 1976 1975 1974 1973 1972
MACK WS1977 1976 1975 1974 1973 1972

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.