MACK CH 1990: STEERING:LINKAGES

General Information

NHTSA Campaign ID Number: 90V048000

Make Model Year
MACK CH 1990
Date Owners Notified Date Received by ODI Date Added to Database
1990-06-27 1990-03-12 1990-03-15

Production Dates: 1988-07-01 - 1990-02-01

Manufacturers Involved: Mack Trucks, Inc.

Component: STEERING:LINKAGES

Potential Number Of Units Affected: 6696

Report Initiator: MFR MFR Report

Summary

THE UPPER AND LOWER PINCH BOLT ON THE STEERING PITMAN ARM AND THE LOWER PINCH BOLT CONNECTION ON SHEPHARD POWER GEARS WERE NOT TORQUED CORRECTLY.

Consequence

PINCH BOLT COULD LOOSEN AND BREAK; THIS COULD CAUSE LOSS OF TRUCK STEERING CONTROL AND RESULT IN A CRASH.

Remedy

INSTALL ENGLISH HEX HEAD BOLTS AND FLAT WASHERS; TORQUE PINCH BOLTS TO SPECIFICATIONS.

Notes

SYSTEM: STEERING WHEEL ARM PINCH BOLT.VEHICLE DESCRIPTION: HEAVY-DUTY TRUCKS WITH TRW POWER AND MANUAL GEARS AND SHEPPARD POWER GEARS.