Known Recalls

Recall campaign · NHTSA 78V008000

Service brakes, air: supply

TRANSIT MANUFACTURING,INC filed this campaign with NHTSA on 1978-01-16.

Recall campaignNHTSA 78V008000

Service brakes, air: supply

Component
Service brakes, air: supply
Manufacturer
TRANSIT MANUFACTURING,INC
Vehicles affected
527
Reported to NHTSA
1978-01-16
Owners notified
1977-11-30

Defect description

THE INVOLVED VEHICLES MAY NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "MODULATED EMERGENCY BRAKING". THE "O" RINGS IN THE SHUTTLE VALVE MAY DEVELOP SLIGHT LEAKS IN COLD WEATHER. IN ADDITION, NEOPRENE WASHERS USED ON THESE "O" RINGS MAY EVENTUALLY EXPAND OR PUCKER IN COLD CLIMATES, MAKING IT POSSIBLE FOR THE SHUTTLE PISTON TO BECOME TRAPPED BY THE INNER-CIRCUMFERENCES OF THE WASHERS. THIS WOULD FORCE THE EMERGENCY BRAKES TO THE "ON" POSITION AND WOULD PREVENT THEM FROM BEING RELEASED.

Manufacturer remedy

THE DEALER WILL REPLACE THE TWO NEOPRENE WASHERS WITH GLASS FILLED TEFLON WASHERS THAT WILL NOT BE AFFECTED BY COLD CLIMATES.

Notes

VEHICLE DESCRIPTION: BUSES.SYSTEM: EMERGENCY BRAKES; SHUTTLE VALVE.CONSEQUENCES OF DEFECT: SHOULD THE EMERGENCY BRAKES BECOME LOCKED DURINGVEHICLE OPERATION, LOSS OF VEHICLE CONTROL AND AN ACCIDENT COULD RESULT.

Scope of coverage

2 model years across 1 models.

ModelYears on record
TMC MC81977 1976

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.