Service brakes, hydraulic: foundation components: drum
- Component
- Service brakes, hydraulic: foundation components: drum
- Manufacturer
- WESTERN STAR TRUCKS, INC.
- Vehicles affected
- 88
- Reported to NHTSA
- 1996-08-01
- Owners notified
- 1996-08-16
Defect description
THE BRAKE RETURN SPRING CAN CONTACT THE HUB. FURTHER WEAR OF THE BRAKE LINING MATERIAL WILL LEAD TO WEAR OF THE RETURN SPRING AND THE SPRING CAN FAIL PREMATURELY.
Safety risk
PIECES OF THE FAILED SPRING COULD THEN LODGE IN THE BRAKE CAM CAUSING EITHER THE AFFECTED BRAKE TO STAY APPLIED WHEN THE OTHER BRAKES HAVE BEEN RELEASED, OR STOPPING THE AFFECTED BRAKE FROM APPLYING WHEN THE OTHER BRAKES ARE APPLIED. THE VEHICLE COULD THEN BE PULLED IN A LATERAL DIRECTION OFF THE ROAD OR INTO ONCOMING TRAFFIC INCREASING THE POTENTIAL FOR A VEHICLE ACCIDENT.
Manufacturer remedy
DEALERS WILL MODIFY THE FRONT BRAKES ON THESE TRUCKS.