RoadVitals

NHTSA safety recall

Recall 78V210000: SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)

MACK TRUCKS, INCORPORATED · Reported to NHTSA Oct 3, 1978

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
Units potentially affectedThe manufacturer's own estimate of how many vehicles or items of equipment may contain the defect. It is not a count of failures, and not every unit in the range is necessarily affected.
19,370
Model years coveredModel years in our database that NHTSA matched to this campaign. Whether an individual vehicle is covered still depends on its VIN.
28
Models covered
14
Grouped from the model years above
Reported to NHTSA
Oct 3, 1978
Production Oct 1, 1977 – Sep 1, 1978

What this recall covers

NHTSA's campaign record, quoted as published

The defect

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 remedy

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.

Notes

VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: SERVICE BRAKES; ELECTRICAL WIRING AND CONNECTORS.CONSEQUENCES OF DEFECT: THIS DELAY IN EFFECTIVE BRAKING ACTION COULD LEAD TO ANACCIDENT UNDER CERTAIN TRAFFIC CONDITIONS.

A safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.

Campaign details

Identifiers and dates as filed with NHTSA

Manufacturer
MACK TRUCKS, INCORPORATED
Manufacturer's campaign number
Not recorded
NHTSA campaign number
78V210000
Units potentially affected
19,370
Report received
Oct 3, 1978
Production range
Oct 1, 1977 – Sep 1, 1978
Campaign type
Vehicle
Federal safety standard (FMVSS)
121

Vehicles covered

28 model years across 14 models

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.