THE HAND VALVE INSTALLED IN THE VEHICLE MAY HAVE BEEN INCORRECTLY POSITIONED. THIS WOULD ALLOW AIR TO ESCAPE FROM BOTH THE FRONT AND REAR SERVICE SYSTEMS SIMULTANEOUSLY IF THE CONTROL LINE TO THE REAR AXLE RELAY VALVES SHOULD FAIL. PERFORMANCE OF FRONT AND REAR SERVICE BRAKES DURING FAILURE COULD BE DEGRADED.
Consequence & remedy
Consequence: Not supplied
Remedy: THE HAND VALVE WILL BE REPOSITIONED BY THE DEALER, IF NECESSARY, AT NO CHARGE OWNER.
SOME OF THE INVOLVED VEHICLES DO NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". THE AIR RESERVOIR CAPACITY IS BELOW THAT ALLOWED BY THE STANDARD.
Consequence & remedy
Consequence: Not supplied
Remedy: DEALER WILL EITHER REPLACE THE EXISTING TANK WITH A LARGER TANK OR ADD A SECOND TANK, WITHOUT CHARGE TO OWNER.
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
0
No exact-year investigations in this snapshot.
1976 Kenworth C500 Problems, Complaints & Recalls | Skip That Year