Mack DM, DMM, F, MB and 10 more (1977-1978): Service brakes, air
Recall 78V210000 · Oct 3, 1978 · Mack Trucks, Incorporated
19,370
vehicles affected
19,370
vehicles affected
Facts
- Recall number
- 78V210000
- Date
- Oct 3, 1978
- Maker
- Mack Trucks, Incorporated
- Units affected
- 19,370
- Kind
- Vehicles
- Component
- Service brakes, air > Antilock > Interconnecting assembly(wiring)
- Model years
- 1977-1978
- Started by
- The maker
- Hazard
- Other or not stated
What is wrong
DELAYS OF UP TO ABOUT 2 SECONDS MAY EXIST IN THE BRAKE APPLICATION TIMES TO THE BRAKES ON THE BOGIE AXLES IN THE PRESENCE OF CERTAIN TYPES OF WHEEL SPEED SENSOR SIGNAL DISCONTINUITIES OR DISTORTIONS THAT MAY OCCUR AS A RESULT OF SENSOR WIRE FAILURE. THIS CONSTITUTES A NON-COMPLIANCE TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS".
The fix
Recall repairs are free of charge.
DEALER WILL INSTALL NEW WHEEL SPEED SENSORS THAT INCORPORATE IMPROVED WIRING AND THE PRESENT BOGIE ANTI-WHEEL LOCK SYSTEM WILL BE CHANGED TO AN AXLE-TO-AXLE SYSTEM FOR IMPROVED RELIABILITY.
Vehicles covered
14 models, 28 model years in all
Related pages
Questions and answers
Which vehicles are in recall 78V210000?
14 models: Mack DM (1977-1978), Mack DMM (1977-1978), Mack F (1977-1978) and 11 more, about 19,370 vehicles in all.
What is the fix for recall 78V210000?
DEALER WILL INSTALL NEW WHEEL SPEED SENSORS THAT INCORPORATE IMPROVED WIRING AND THE PRESENT BOGIE ANTI-WHEEL LOCK SYSTEM WILL BE CHANGED TO AN AXLE-TO-AXLE SYSTEM FOR IMPROVED RELIABILITY.
A recall means the maker found a safety problem and offers a free fix; it does not mean every unit has the problem. Units affected are as reported by the company. Popular models sell more and so have more recalls and complaints. Official public data; texts are shortened. A dealer can tell whether a single vehicle still needs the repair.