MACK U 1977: SUSPENSION:MULTIPLE AXLE

General Information

NHTSA Campaign ID Number: 79V017000

Make Model Year
MACK U 1977
Date Owners Notified Date Received by ODI Date Added to Database
1979-08-13 1979-01-12 1979-10-12

Production Dates: 1977-01-01 - 1978-12-01

Manufacturers Involved: Mack Trucks, Inc.

Component: SUSPENSION:MULTIPLE AXLE

Potential Number Of Units Affected: 4000

Report Initiator: MFR MFR Report

Summary

A CASTING DEFICIENCY EXISTS IN THE LOWER SECTION OF THE CAPS RESULTING IN A REDUCTION IN THE THICKNESS OF THE MATERIAL. FAILURE OF A CAP CAN ALLOW THE END OF THE REAR SPRING TO DETACH FROM THE AXLE HOUSING.

Remedy

DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ANY OF THE SPRING INSULATOR CAPS FOUND TO BE DEFECTIVE. THIS WILL BE DONE AT NO COST TO OWNER.

Notes

VEHICLE DESCRIPTION: TRUCKS, HEAVY.SYSTEM: SUSPENSION; INSULATOR CAP.CONSEQUENCES OF DEFECT: LOSS OF VEHICLE CONTROL CAN RESULT AND LEAD TO AVEHICLE ACCIDENT.