Recall campaign · NHTSA 77V013000

Service brakes, air: drum

MACK TRUCKS, INCORPORATED filed this campaign with NHTSA on 1977-01-01.

Recall campaignNHTSA 77V013000

Service brakes, air: drum

Component: Service brakes, air: drum
Manufacturer: MACK TRUCKS, INCORPORATED
Vehicles affected: 830
Reported to NHTSA: 1977-01-01

Defect description

CRACKS MAY BE PRESENT IN THE BRAKE SPIDER. THESE CRACKS COULD EVENTUALLY CAUSE THE BRAKE SPIDER TO FAIL. THIS COULD ALLOW SEPARATION OF THAT PORTION OF THE BRAKE SPIDER THAT RETAINS THE BRAKE CAMSHAFT, THE BRAKE CHAMBER, AND THE BRAKE CHAMBER BRACKET FROM THE FOUNDATION BRAKE ASSEMBLY. BRAKE PULL IN THE DIRECTION OPPOSITE THE AFFECTED WHEEL LOCATION OR WHEEL LOCK-UP ON THE AFFECTED WHEEL COULD OCCUR.

Manufacturer remedy

THE DEALER WILL INSPECT AND MODIFY THE AFFECTED BRAKE SPIDERS, FREE OF CHARGE.

Notes

VEHICLE DESCRIPTION: TRUCKS.SYSTEM: SERVICE BRAKES; FRONT AXLE CAM, BRAKE SPIDER.CONSEQUENCES OF DEFECT: BRAKE DEGRADATION AND WHEEL LOCK-UP COULD CAUSE LOSS OFVEHICLE CONTROL AND AN ACCIDENT.

Scope of coverage

4 model years across 2 models.

Model	Years on record
MACK WL	1976 1975
MACK WS	1976 1975

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.