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Chevrolet Astro Recall 85V124: Parking Brake:Driveline:Air:Chamber

NHTSA campaign 85V124, reported October 7, 1985, 4,870 vehicles potentially affected.

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The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 85V124GENERAL MOTORS CORP.
Component
PARKING BRAKE:DRIVELINE:AIR:CHAMBER
Problem
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.
Risk
Remedy
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.
Notes
SYSTEM: AIR BRAKES. VEHICLE DESCRIPTION: TRACTORS EQUIPPED WITH RPO RQ3 TRACTOR APPLICATION.

Affected vehicles

Chevrolet Astro198319841985