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NHTSA Campaign 78V068000

SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE

Issued by MACK TRUCKS, INCORPORATED · Reported Apr 4, 1978 · 9,700 vehicles affected

What's wrong

AN AXLE "NO BRAKE" CONDITION COULD RESULT FROM AN EATON CONTROLLER INTERNAL ELECTRICAL MALFUNCTION. THIS CONDITION MAY CAUSE THE ANTI-WHEEL LOCK VALVE SOLENOID TO BE CONTINUOUSLY ENERGIZED AND PREVENT THE BRAKES FROM BEING APPLIED ON ONE OF THE AXLES. AS A RESULT, THE ANTI-WHEEL LOCK WARNING LAMP IS NOT ACTIVATED.

Remedy

THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.

Vehicles affected by this recall

Make Model Year Units
MACK DM 1974 9,700
MACK DM 1975 9,700
MACK DM 1976 9,700
MACK DMM 1974 9,700
MACK DMM 1975 9,700
MACK DMM 1976 9,700
MACK F 1974 9,700
MACK F 1975 9,700
MACK F 1976 9,700
MACK HMM 1974 9,700
MACK HMM 1975 9,700
MACK HMM 1976 9,700
MACK MB 1974 9,700
MACK MB 1975 9,700
MACK MB 1976 9,700
MACK R 1974 9,700
MACK R 1975 9,700
MACK R 1976 9,700
MACK RD 1974 9,700
MACK RD 1975 9,700
MACK RD 1976 9,700
MACK RL 1974 9,700
MACK RL 1975 9,700
MACK RL 1976 9,700
MACK RM 1974 9,700
MACK RM 1975 9,700
MACK RM 1976 9,700
MACK RS 1974 9,700
MACK RS 1975 9,700
MACK RS 1976 9,700
MACK U 1974 9,700
MACK U 1975 9,700
MACK U 1976 9,700
MACK WL 1974 9,700
MACK WL 1975 9,700
MACK WL 1976 9,700
MACK WS 1974 9,700
MACK WS 1975 9,700
MACK WS 1976 9,700

Source: NHTSA Campaign 78V068000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.