The defect
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". THE S121 BOGIE CONTROL AIR BRAKE SYSTEM WAS INSTALLED IN SUCH A WAY THAT THE REAR AXLE AIR CONTROL BYPASSED THE FRONT SKID CONTROL AIR MODULATOR VALVE. IMPROPER INSTALLATION WOULD ALLOW THE REAR AXLE TO LOCK UP IN A PANIC STOP.
The remedy
THE DEALER WILL REROUTE THE BRAKE AIR CONTROL LINES TO THE REAR AXLE OF THE BOGIE THROUGH THE FRONT SKID CONTROL AIR SYSTEM TO COMPLY WITH THE SAFETY STANDARD.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|
Components: SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING)
Other service brakes, air recalls in 1977
19 of the 245 recall campaigns reported to NHTSA in 1977 concerned the service brakes, air; FRUEHAUF CORPORATION filed 33 campaigns in all.
| 77V224000 15 Dec 1977 | WHITE MOTOR CORPORATION |
| 77V206000 21 Nov 1977 | WHITE MOTOR CORPORATION |
| 77V186000 25 Oct 1977 | MOTOR COACH IND., INC. |
| 77V177000 14 Oct 1977 | INTERNATIONAL HARVESTER |
| 77V156000 21 Sept 1977 | GREAT DANE TRAILERS, INC. |
| 77V153000 20 Sept 1977 | GREAT DANE TRAILERS, INC. |
| 77V148000 19 Sept 1977 | TRAILMOBILE INC. |
| 77V147000 19 Sept 1977 | PACCAR, INCORPORATED |
NHTSA recalls (public domain) · all recalls of 1977