The defect
INTERNAL COMPONENTS OF THE E-12 DUAL CIRCUIT AIR BRAKE VALVES MAY BE MISASSEMBLED SO THAT ONE OF THE TAPERED SNAP RINGS IS UPSIDE DOWN.
The risk
THE SNAP RING CAN COME OUT CAUSING THE VALVE TOMALFUNCTION AND APPLY THE TRUCK'S BRAKE SYSTEM WITHOUT WARNING; THIS COULDRESULT IN LOSS OF CONTROL AND A CRASH.
The remedy
REPLACE MISASSEMBLED VALVES.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack CH | 1989 |
Components: SERVICE BRAKES, AIR:CONTROLS:FOOT CONTROL/VALVE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack CH | 1989 | 0 | 7 |
Other service brakes, air recalls in 1989
10 of the 234 recall campaigns reported to NHTSA in 1989 concerned the service brakes, air; MACK TRUCKS, INCORPORATED filed 245 campaigns in all.
| 89V208000 30 Nov 1989 | GREAT DANE TRAILERS, INC. |
| 89V172000 16 Oct 1989 | FLXIBLE CORPORATION |
| 89V162000 29 Sept 1989 | MACK TRUCKS, INCORPORATED |
| 89V121000 24 Jul 1989 | GENERAL MOTORS CORP. |
| 89V101000 19 Jun 1989 | FORD MOTOR COMPANY |
| 89V081000 19 May 1989 | FORD MOTOR COMPANY |
| 89V056000 5 Apr 1989 | GENERAL MOTORS CORP. |
| 89V055000 5 Apr 1989 | GENERAL MOTORS CORP. |
NHTSA recalls (public domain) · all recalls of 1989