Recall
Mack Ch — 89V178000
NHTSA ID
89V178000
Make
Mack
Model
Ch
Years Affected
1989
Recall Date
1989-10-23
Component
SERVICE BRAKES, AIR:CONTROLS:FOOT CONTROL/VALVE
Units Affected
3,652
Completion Rate
—
Mfr Campaign No.
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.