MACK U 1977: SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET

General Information

NHTSA Campaign ID Number: 77V205000

Make Model Year
MACK U 1977
Date Owners Notified Date Received by ODI Date Added to Database
1978-03-14 1977-11-21 1979-10-12

Production Dates: 1977-05-01 - 1977-10-01

Manufacturers Involved: Mack Trucks, Inc.

Component: SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:HANGER/BRACKET

Potential Number Of Units Affected: 7400

Report Initiator: MFR MFR Report

Summary

A DEFICIENCY EXISTS IN THE WELDS SECURING THE REAR SPRING INSULATOR BRACKET TO THE AXLE HOUSING. THIS IS DUE TO IMPROPER POSITIONING OF THE WELD, IN RELATIONSHIP TO THE BRACKET AND AXLE HOUSING. FAILURE OF THE WELDS WOULD CAUSE SEPARATION OF THE SPRING INSULATOR BRACKET AND THE AXLE HOUSING, RESULTING IN IMPROPER ALIGNMENT OF THE AFFECTED AXLE.

Remedy

DEALER WILL REWELD THE INSULATOR SPRING BRACKET AT NO COST TO OWNER.

Notes

VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: SUSPENSION; TANDEM AXLE.CONSEQUENCES OF DEFECT: THIS CONDITION COULD CAUSE A LOSS OF VEHICLE CONTROLAND A VEHICLE ACCIDENT.