The defect
THE INVOLVED VEHICLES MAY NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". THE TRAILER BRAKE CONTROL AIR LINE WAS CONNECTED TO THE FRONT BRAKE DOUBLE CHECK VALVE RATHER THAN THE STOP LAMP SWITCH DOUBLE CHECK VALVE, SUCH THAT IN THE EVENT OF A FAILURE OF THE TRUCK FRONT BRAKE SYSTEM THE TRAILER BRAKES CANNOT BE APPLIED USING THE SERVICE BRAKE CONTROL (TREADLE VALVE).
The remedy
DEALER WILL INSPECT AND CONNECT THE BRAKE CONTROL AIR LINE TO THE PROPER VALVE, WITHOUT CHARGE TO OWNER.
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; GENERAL MOTORS CORP. filed 1,195 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