NHTSA recall campaign

77V173000

ManufacturerMACK TRUCKS, INCORPORATEDReported1977-10-12Affected48,000 vehicles

What was wrong

Defect

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.

To check whether your specific VIN is covered and to find a participating dealer, look this campaign up on NHTSA.gov →

Affected vehicles

84 entries

Mack
- CF1972 1973 1974 1975 1976 1977
- DM1972 1973 1974 1975 1976 1977
- DMM1972 1973 1974 1975 1976 1977
- F1972 1973 1974 1975 1976 1977
- FL1972 1973 1974 1975 1976 1977
- FS1972 1973 1974 1975 1976 1977
- HMM1972 1973 1974 1975 1976 1977
- R1972 1973 1974 1975 1976 1977
- RD1972 1973 1974 1975 1976 1977
- RL1972 1973 1974 1975 1976 1977
- RM1972 1973 1974 1975 1976 1977
- U1972 1973 1974 1975 1976 1977
- WL1972 1973 1974 1975 1976 1977
- WS1972 1973 1974 1975 1976 1977

77V173000

What was wrong

Defect

Manufacturer remedy

Affected vehicles

Mack