MACK RS 1977: WHEELS:MULTI PIECE
NHTSA Campaign ID Number: 77V149000
| Make | Model | Year |
|---|---|---|
| MACK | RS | 1977 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1978-01-17 | 1977-09-19 | 1979-10-12 |
Production Dates: 1977-02-01 - 1979-03-01
Manufacturers Involved: Mack Trucks, Inc.
Component: WHEELS:MULTI PIECE
Potential Number Of Units Affected: 250
Report Initiator: MFR MFR Report
THE FRONT WHEEL ALUMINUM HUBS ON THE INVOLVED VEHICLES MAY BE SUBJECT TO CRACKS WHICH MAY PROGRESS CIRCUMFERENTIALLY AROUND THE BARREL OF THE HUB. THIS COULD LEAD TO A FRACTURE IN THE "BARREL" POSITION OF THE HUB AND COMPLETE HUB FAILURE.
DEALER WILL INSTALL STEEL HUBS IN PLACE OF ALUMINUM HUBS WITHOUT CHARGE TO OWNER.
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH FF-931 FRONT AXLES.SYSTEM: WHEELS; ALUMINUM HUBS, FRONT.CONSEQUENCES OF DEFECT: HUB FAILURE COULD RESULT IN LOSS OF VEHICLE CONTROL ANDAN ACCIDENT.NOTE: HUB FAILURE MAY BE INDICATED BY AN AUDIBLE SOUND AT THE INSTANT OF HUBSEPARATION, ALONG WITH THUMPING OR WHEEL WOBBLE. HUB MAY SEPARATE FROM THEWHEEL AND STILL BE RETAINED ON THE AXLE.
