Known Recalls

Recall campaign · NHTSA 78V210000

Service brakes, air: antilock: interconnecting assembly(wiring)

MACK TRUCKS, INCORPORATED filed this campaign with NHTSA on 1978-10-03.

Recall campaignNHTSA 78V210000

Service brakes, air: antilock: interconnecting assembly(wiring)

Component
Service brakes, air: antilock: interconnecting assembly(wiring)
Manufacturer
MACK TRUCKS, INCORPORATED
Vehicles affected
19,370
Reported to NHTSA
1978-10-03
Owners notified
1978-11-07

Defect description

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".

Manufacturer 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.

Scope of coverage

28 model years across 14 models.

ModelYears on record
MACK DM1978 1977
MACK DMM1978 1977
MACK F1978 1977
MACK MB1978 1977
MACK R1978 1977
MACK RD1978 1977
MACK RL1978 1977
MACK RM1978 1977
MACK RS1978 1977
MACK RWL1978 1977
MACK RWS1978 1977
MACK U1978 1977
MACK WL1978 1977
MACK WS1978 1977

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.