The defect
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". THE REQUIRED BRAKE RELEASE TIME OF 0.55 SECONDS MAY NOT BE ATTAINABLE DUE TO DISCONNECTION OF THE ROCKWELL SKID CONTROL VALVE WHICH HAD PERFORMED THE RELAY VALVE AND QUICK RELEASE FUNCTIONS.
The remedy
DEALER WILL INSPECT AND, IF NECESSARY, INSTALL THE COMPONENTS NEEDED TO BRING THE BRAKE RELEASE TIME INTO COMPLIANCE WITH THE 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 1979
19 of the 274 recall campaigns reported to NHTSA in 1979 concerned the service brakes, air; GRUMMAN FLXIBLE CORP. filed 42 campaigns in all.
| 79V250000 19 Nov 1979 | GRUMMAN FLXIBLE CORP. |
| 79V253000 15 Nov 1979 | HENDRICKSON MFG. CO. |
| 79V241000 2 Nov 1979 | GRUMMAN FLXIBLE CORP. |
| 79V211000 18 Sept 1979 | INTERNATIONAL HARVESTER |
| 79V216000 13 Sept 1979 | PACCAR, INCORPORATED |
| 79V188000 15 Aug 1979 | TRANSPORTATION MFG. CORP. |
| 79V187000 8 Aug 1979 | GENERAL MOTORS CORP. |
| 79V178000 1 Aug 1979 | MOTOR COACH IND., INC. |
NHTSA recalls (public domain) · all recalls of 1979