MACK MS250P 1983: STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

General Information

NHTSA Campaign ID Number: 83V101000

Make Model Year
MACK MS250P 1983
Date Owners Notified Date Received by ODI Date Added to Database
1984-01-03 1983-09-27 1983-10-24

Production Dates: 1982-10-01 - 1983-08-01

Manufacturers Involved: Mack Trucks, Inc.

Component: STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

Potential Number Of Units Affected: 1486

Report Initiator: MFR MFR Report

Summary

BOLTED INSTALLATION OF THE STEERING GEAR HOUSING HAS A TENDENCY TO LOOSEN IN SERVICE. THIS IS DUE TO A BACKWARD INSTALLATION OF THE LOCKWASHERS, WHICH ARE BELLVILLE TYPE, AND A RESULTANT INCORRECT TORQUE ON THE BOLTS.

Remedy

ALL RECALLED VEHICLES WILL HAVE BELLVILLE TYPE LOCKWASHERS AT STEERING GEAR HOUSING ATTACH POINTS REPLACED WITH STANDARD SPLIT-TYPE LOCKWASHERS.

Notes

VEHICLE DESCRIPTION: TRUCKS.SYSTEM: STEERING SYSTEM; STEERING GEAR MOUNTING HARDWARE.CONSEQUENCES OF DEFECT: LOOSENING OF THE STEERING GEAR HOUSING MAY RESULT INERRATIC STEERING AND POSSIBLY AN ACCIDENT.