Hydraulic: hoses, lines/piping, and fittingsRecall 85V-159 · Mack vehicles
MACK TRUCKS, INCORPORATED recall 85V-159 covers 3,308 Mack vehicles for a hydraulic: hoses, lines/piping, and fittings problem, reported to NHTSA on November 26, 1985.
Source: NHTSA recall 85V159000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The fix
INSTALL A REDESIGNED VALVE SUPPORT BRACKET.
SYSTEM: PARKING BRAKES AIR LINES, QUICK RELEASE VALVE BRACKET.VEHICLE DESCRIPTION: MID-LINER TRUCKS.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
Vehicles in this recall
Built from July 1, 1984 to October 1, 1985. Not every vehicle in these model years is included; check by VIN.