Recall
Chevrolet Astro — 85V124000
NHTSA ID
85V124000
Make
Chevrolet
Model
Astro
Years Affected
1984
Recall Date
1985-10-07
Component
PARKING BRAKE:DRIVELINE:AIR:CHAMBER
Units Affected
4,870
Completion Rate
—
Mfr Campaign No.
Summary
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.
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.