THE PARKING BRAKE ACTUATING LEVER CAM MAY CONTAIN A QUENCH CRACK WHICH CAN WIDEN, REDUCING THE HOLDING CAPABILITY OF THE PARKING BRAKES. CONSEQUENCE OF DEFECT: THE REDUCED HOLDING CAPABILITY OF THE PARKING BRAKE COULD ALLOW AN UNATTENDED TRUCK TO ROLL AWAY UNCONTROLLED, WHICH MAY LEAD TO AN ACCIDENT.
Consequence & remedy
Consequence: Not supplied
Remedy: INSTALL A NEW ACTUATION LEVER.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1
PE86073 · Ineffective Air Brakes
Opened Aug 13, 1986 · Closed Oct 16, 1986
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
SUMMARY OF INFORMATION FROM MANUFACTURER:NONE AT THIS TIME.ANALYSIS:A PNEUMATIC BALANCE TEST PERFORMED ON FOUR OF THE SUBJECT BUSESBY AFTERMARKET BRAKE SYSTEM DISTRIBUTOR INDICATED THAT DURING A 15 PSIBRAKE APPLICATION, THERE WOULD BE 15 PSI AT THE FRONT AXLE AND 0 PSI ATTHE REAR.ONE OF THE KEYS TO BRAKE BALANCE IS BRAKE ACTUATION AND RELEASE.THE REAR SHOULD APPLY BEFORE THE FRONT AND RELEASE SLIGHTLY AFTER.SINCEMOST BRAKING OCCURS BELOW 20 PSI, IT WOULD SEEM THAT HAVING THE SAME ORCLOSE PRESSURE IN ALL CHAMBERS IS IMPORTANT FOR PROPER BALANCE.PROPOSED ACTION:OPEN A PE.SEND AN IR.
1985 Chevrolet B6P Problems, Complaints & Recalls | Skip That Year