MACK R600 1981: STEERING:LINKAGES

General Information

NHTSA Campaign ID Number: 81V086000

Make Model Year
MACK R600 1981
Date Owners Notified Date Received by ODI Date Added to Database
1984-05-04 1981-07-08 1981-07-14

Production Dates: 1981-01-01 - 1981-06-01

Manufacturers Involved: Mack Trucks, Inc.

Component: STEERING:LINKAGES

Potential Number Of Units Affected: 100

Report Initiator: MFR MFR Report

Summary

THE INVOLVED TRUCKS HAVE PITMAN ARMS WITH TIMING MARKS AND SERRATIONS LOCATED 8 DEGREES OUT OF PROPER ALIGNMENT. WHEN THE CHASSIS IS RAISED TO THE MAXIMUM CONDITION WITH THE WHEELS SUSPENDED OR DROPPED INTO A DEEP HOLE, THE PITMAN ARM AND DRAG LINK CAN GO INTO TOGGLE POSITION.

Remedy

UPON INSPECTION, ALL DEFECTIVE PITMAN ARMS WILL BE REPLACED WITH PROPERLY TIMED ARMS.

Notes

VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH LEFT HAND STEERING AND 9QC3239-P3PITMAN ARM.SYSTEM: STEERING; STEERING GEAR LEVER 'PITMAN ARM'.CONSEQUENCES OF DEFECT: UNDER THESE CONDITIONS THE STEERING WOULD LOCK,RESULTING IN LOSS OF VEHICLE CONTROL AND, POSSIBLY, AN ACCIDENT.