MACK R 1983: TRAILER HITCHES:FIFTH WHEEL ASSEMBLY

General Information

NHTSA Campaign ID Number: 84V140000

Make Model Year
MACK R 1983
Date Received by ODI Date Added to Database
1984-11-07 1984-12-03

Production Dates: 1984-05-01 - 1985-03-01

Manufacturers Involved: Mack Trucks, Inc.

Component: TRAILER HITCHES:FIFTH WHEEL ASSEMBLY

Potential Number Of Units Affected: 64

Report Initiator: MFR MFR Report

Summary

DUE TO IMPROPER AND INADEQUATE WELDING PRACTICES, THE FIFTH WHEEL ON THE INVOLVED VEHICLES IS DEFECTIVE. FRAME MOUNTED SUPPORTS MAY HAVE INCOMPLETE OR POOR QUALITY WELDS. THE WELDS COULD SUBSEQUENTLY FAIL ALLOWING SEPARATION OF THE TRACTOR FROM THE TRAILER.

Remedy

THE DEALER WILL INSPECT AND REMOVE THE FIFTH WHEEL AND REWELD THE MOUNTING ANGLES AT NO CHARGE TO THE OWNER.

Notes

VEHICLE DESCRIPTION: TRUCK TRACTORS.SYSTEM: STRUCTURE; FIFTH WHEEL ASSEMBLY.CONSEQUENCES OF DEFECT: IF THE TRAILER SEPARATES DURING OPERATION AN ACCIDENTAND PERSONAL INJURY COULD RESULT.