OFFICIAL NHTSA RECALL
77V055000
Service Brakes, Hydraulic:power Assist
Reported Apr 19, 1977 · MERCEDES-BENZ USA, INC.
Summary
AN AIR LEAK COULD DEVELOP THROUGH THE PISTON SHAFT SEAL RING WHICH SEALS THE INSIDE OF THE BRAKE BOOSTER FROM THE ATMOSPHERE. THIS COULD RESULT IN A REDUCTION IN BRAKE BOOSTER ASSIST, NECESSITATING INCREASED BRAKE PEDAL PRESSURE.
Consequence
Not supplied in the source record.
Remedy
DEALER WILL REPLACE THE DEFECTIVE SEAL WITH AN IMPROVED VERSION AT NO CHARGE TO OWNER.
Notes
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: SERVICE BRAKES; PISTON SHAFT SEAL.CONSEQUENCES OF DEFECT: BRAKE MALFUNCTION, REQUIRING AN INCREASE IN BRAKE PEDALPRESSURE, COULD CAUSE LOSS OF VEHICLE CONTROL AND AN ACCIDENT.
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 ↗