The defect
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.
The remedy
DEALER WILL REPLACE THE ALUMINUM HUBS WITH STEEL HUB, CUP AND STUD ASSEMBLIES, WITHOUT CHARGE TO OWNER.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|
Components: WHEELS
Other wheels recalls in 1977
14 of the 245 recall campaigns reported to NHTSA in 1977 concerned the wheels; FREIGHTLINER CORP. filed 116 campaigns in all.
| 77V237000 28 Dec 1977 | WHITE MOTOR CORPORATION |
| 77V241000 28 Dec 1977 | CHRYSLER CORPORATION |
| 77V200000 16 Nov 1977 | GENERAL MOTORS CORP. |
| 77V199000 15 Nov 1977 | FORD MOTOR COMPANY |
| 77V180000 17 Oct 1977 | INTERNATIONAL HARVESTER |
| 77V172000 12 Oct 1977 | GENERAL MOTORS CORP. |
| 77V149000 19 Sept 1977 | MACK TRUCKS, INCORPORATED |
| 77V139000 13 Sept 1977 | AMERICAN HONDA MOTOR CO. |
NHTSA recalls (public domain) · all recalls of 1977