MACK CH 1989: SERVICE BRAKES, AIR:CONTROLS:FOOT CONTROL/VALVE
NHTSA Campaign ID Number: 89V178000
| Make | Model | Year |
|---|---|---|
| MACK | CH | 1989 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1989-11-10 | 1989-10-23 | 1989-10-31 |
Production Dates: 1988-11-01 - 1989-10-01
Manufacturers Involved: Mack Trucks, Inc.
Component: SERVICE BRAKES, AIR:CONTROLS:FOOT CONTROL/VALVE
Potential Number Of Units Affected: 3652
Report Initiator: MFR MFR Report
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 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.
REPLACE MISASSEMBLED VALVES.
SYSTEM: AIR BRAKE VALVES.VEHICLE DESCRIPTION: TRUCKS
