OFFICIAL NHTSA RECALL
89V178000
Service Brakes, Air:controls:foot Control/valve
Reported Oct 23, 1989 · MACK TRUCKS, INCORPORATED
Summary
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.
Consequence
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.
Remedy
REPLACE MISASSEMBLED VALVES.
Notes
SYSTEM: AIR BRAKE VALVES.VEHICLE DESCRIPTION: TRUCKS
This campaign page uses the representative official campaign record. Applicability-specific source variants appear on the linked vehicle pages. Recall counts refer to campaigns, not affected vehicles.
Vehicle entries in this campaign
This is model-level recall history. It does not confirm whether a particular VIN is affected or has received the repair. Check with NHTSA ↗