MACK UNSPECIFIED 1983: SUSPENSION:FRONT:WHEEL BEARING

General Information

NHTSA Campaign ID Number: 86V040000

Make Model Year
MACK UNSPECIFIED 1983
Date Owners Notified Date Received by ODI Date Added to Database
1987-01-08 1986-03-10 1986-03-24

Production Dates: 1982-05-01 - 1985-10-01

Manufacturers Involved: Mack Trucks, Inc.

Component: SUSPENSION:FRONT:WHEEL BEARING

Potential Number Of Units Affected: 50100

Report Initiator: MFR MFR Report

Summary

FRONT STEERING KNUCKLE THRUST BEARING MAY SHATTER INTO PIECES DUE TO IMPROPER HEAT TREATMENT. CONSEQUENCE OF DEFECT: FAILURE OF THE BEARING MAY AFFECT STEERING CONTROL. IF BEARING DISINTEGRATES, IT WOULD RESULT IN INCREASE STEERING DRAG AND/OR CAUSE STEERING LOCK UP WITH LOSS OF CONTROL WHICH COULD LEAD TO AN ACCIDENT.

Remedy

REPLACE DEFECTIVE THRUST BEARINGS.

Notes

SYSTEM: STEERING KNUCKLE. VEHICLE DESCRIPTION: ALL MODELS EQUIPPED WITH A FA536, FA537, OR FA538 SERIES FRONT STEERING AXLE.