Investigation PE02094: 1998–1999, 2001 Mack CH

Status

CLOSED

Opened

Dec 11, 2002

Closed

May 30, 2003

Model years

1998–1999, 2001

Subject

Integral hub and bearing assembly

Component: Suspension › Front › Hub

Summary

The companies involved in this matter are: skf (hub mfr), arvinmeritor (front axle mfr), and mack (manufacturer of class viiitractor/trucks).skf identified manufacturing defects for specific build dates on front axle hub and bearings (wheel bearings) supplied to arvinmeritor.as a result, arvinmeritor notified mack of axles supplied with possible defective front hub assemblies.as a result of that notification, 998 trucks are being recalled by mack for defective front axle wheel bearings which may fail in such a way that a wheel separation or wheel bearing fire occurs.see attached summary report for additional details.

An NHTSA investigation looks into whether a safety defect exists. Opening one is not a finding. Outcomes can include a recall, closure without action, or further inquiry.