NHTSA Recall 83V137000
Filed by Mercedes-Benz USA, LLC. Component: Parking Brake. Reported 1983-12-22. An estimated 300 vehicles are affected. Recall repairs are free at any authorized dealer.
Defect
BRAKES MAY REQUIRE EXCESSIVE TIME TO RELEASE AFTER BRAKE APPLICATION. A SECOND DEFECT IS REDUCED HOLDING POWER OF THE PARKING/EMERGENCY BRAKES DUE TO ENTRY OF WATER IN THE REAR BRAKE CHAMBERS. EXCESSIVE RELEASE TIME DOES NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS".
What the manufacturer will do
DEALER WILL MODIFY THE VEHICLE BY INSTALLING A QUICK RELEASE VALVE IN THE BRAKE AIR SYSTEM AND BY SUBSTITUTION OF A STIFFER BRAKE PEDAL RETURN SPRING. REAR BRAKE CHAMBERS WILL BE EXCHANGED OR MODIFIED, DEPENDING ON THE CHAMBER MAKE, TO PREVENT WATER ENTRY.
Notes
VEHICLE DESCRIPTION: HEAVY TRUCKS; FOUR WHEEL MODELS.SYSTEM: SERVICE BRAKES; PARKING BRAKES; AIR VALVE, PEDAL, BRAKE CHAMBERS.CONSEQUENCES OF DEFECT: FAILURE OF THE SERVICE BRAKES TO RELEASE REDUCES DRIVERCONTROL OVER VEHICLE AND MAY RESULT IN AN ACCIDENT. FAILURE OF THEPARKING/EMERGENCY BRAKES MAY ALLOW A PARKED VEHICLE TO MOVE WITHOUT WARNING,POSSIBLY CAUSING AN ACCIDENT AND PERSONAL INJURY.