CHEVROLET ASTRO 1984: PARKING BRAKE:DRIVELINE:AIR:CHAMBER
NHTSA Campaign ID Number: 85V124000
| Make | Model | Year |
|---|---|---|
| CHEVROLET | ASTRO | 1984 |
| Date Received by ODI | Date Added to Database | |
| 1985-10-07 | 1985-10-16 |
Production Dates: 1982-07-01 - 1985-02-01
Manufacturers Involved: General Motors, LLC
Component: PARKING BRAKE:DRIVELINE:AIR:CHAMBER
Potential Number Of Units Affected: 4870
Report Initiator: MFR MFR Report
Regulation Part Number: 571
Federal Motor Vehicle Safety Standard Number: 121
THE REAR BRAKE RELEASE TIME MAY BE GREATER THAN THE TIME SPECIFIED IN FMVSS 121, "AIR BRAKE SYSTEM". IN ADDITION, SOME TRACTORS MAY HAVE WARPED PARKING BRAKE APPLY SPRINGS WHICH ALSO EFFECT THE REAR BRAKE RELEASE TIME. CONSEQUENCE OF DEFECT: TRACTORS FAIL TO MEET THE STOPPING DISTANCE SPECIFIED IN FMVSS 121 WHICH IS REQUIRED TO STOP THE TRUCK SAFELY.
INSTALL A QUICK RELEASE VALVE IN THE TRAILER SERVICE AIR LINE AND INCREASE THE DIAMETER OF THE REAR SERVICE BRAKE LINE. ALSO INSPECT REAR SPRING BRAKE CHAMBER AND RELEASE IF NECESSARY.
SYSTEM: AIR BRAKES. VEHICLE DESCRIPTION: TRACTORS EQUIPPED WITH RPO RQ3 TRACTOR APPLICATION.
