FREIGHTLINER UNSPECIFIED 1977: WHEELS
NHTSA Campaign ID Number: 77V121000
| Make | Model | Year |
|---|---|---|
| FREIGHTLINER | UNSPECIFIED | 1977 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1977-11-14 | 1977-08-12 | 1979-10-12 |
Production Dates: 1979-06-01 - 1980-02-01
Manufacturers Involved: FREIGHTLINER LLC
Component: WHEELS
Potential Number Of Units Affected: 163
Report Initiator: MFR MFR Report
ON THE INVOLVED VEHICLES, CRACKS MAY DEVELOP AT THE BASE OF THE INNER WHEEL BEARING CUP AND PROPAGATE CIRCUMFERENTIALLY AROUND THE BARREL OF THE HUB. A FRACTURE BETWEEN THE INNER HUB END AND THE FLANGE PORTION OF THE HUB COULD EVENTUALLY DEVELOP. FAILURE COULD OCCUR CAUSING HUB SEPARATION. CONTINUED OPERATION AFTER HUB SEPARATION HAS OCCURRED COULD RESULT IN LOCK-UP OF BRAKE ASSEMBLY, EXCESSIVE HEAT GENERATION DUE TO BRAKE LINING TO DRUM CONTACT, AND PROGRESSIVE DAMAGE TO THE HUB, CAUSING THE SEPARATED HUB WITH THE WHEEL AND TIRE TO DISENGAGE FROM THE TRUCK.
DEALER WILL REPLACE THE ALUMINUM HUBS WITH STEEL HUB, CUP AND STUD ASSEMBLIES, WITHOUT CHARGE TO OWNER.
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH FF-931 FRONT STEERING AXLES AND MOTORWHEEL CORPORATION ALUMINUM HUBS.SYSTEM: SUSPENSION; WHEELS.CONSEQUENCES OF DEFECT: EITHER HUB FAILURE OR COMPLETE SEPARATION OF THE WHEELASSEMBLY COULD CAUSE LOSS OF VEHICLE CONTROL AND AN ACCIDENT.NOTE: DRIVER MAY HEAR A SOUND THE INSTANT THE HUB SEPARATES, ALONG WITHTHUMPING AND WHEEL WOBBLE.
