OFFICIAL NHTSA RECALL
85V159000
Parking Brake:driveline:hydraulic:hoses, Lines/piping, And Fittings
Reported Nov 26, 1985 · MACK TRUCKS, INCORPORATED
Summary
THE QUICK RELEASE VALVE SUPPORT BRACKET MOUNTED ON THE AXLE MAY CRACK. THIS CAUSES FATIGUE FAILURE OF THE STEEL AIR LINES LEADING TO THE REAR PARKING BRAKES AND CHASSIS SERVICE BRAKES RESULTING IN SUDDEN LOSS OF AIR PRESSURE. CONSEQUENCE OF DEFECT: THIS SUDDEN LOSS OF AIR TO THE BRAKE CHAMBERS WILL RESULT IN AUTOMATIC ACTUATION OF REAR PARKING BRAKE CAUSING SUDDEN REAR WHEEL LOCKUP WHICH MAY CONTRIBUTE TO AN ACCIDENT.
Consequence
Not supplied in the source record.
Remedy
INSTALL A REDESIGNED VALVE SUPPORT BRACKET.
Notes
SYSTEM: PARKING BRAKES AIR LINES, QUICK RELEASE VALVE BRACKET.VEHICLE DESCRIPTION: MID-LINER TRUCKS.
This campaign page uses the representative official campaign record. Applicability-specific source variants appear on the linked vehicle pages. Recall counts refer to campaigns, not affected vehicles.
Vehicle entries in this campaign
This is model-level recall history. It does not confirm whether a particular VIN is affected or has received the repair. Check with NHTSA ↗