MACK WS 1976: SERVICE BRAKES, AIR:DRUM
NHTSA Campaign ID Number: 77V013000
| Make | Model | Year |
|---|---|---|
| MACK | WS | 1976 |
| Date Received by ODI | Date Added to Database | |
| 1977-01-01 | 1983-08-29 |
Production Dates: 1975-01-01 - 1975-12-01
Manufacturers Involved: Mack Trucks, Inc.
Component: SERVICE BRAKES, AIR:DRUM
Potential Number Of Units Affected: 830
Report Initiator: MFR MFR Report
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.
THE DEALER WILL INSPECT AND MODIFY THE AFFECTED BRAKE SPIDERS, FREE OF CHARGE.
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.
