Wheels: multi pieceRecall 77V-149 · Mack vehicles

MACK TRUCKS, INCORPORATED recall 77V-149 covers 250 Mack vehicles for a wheels: multi piece problem, reported to NHTSA on September 19, 1977.

Vehicles repairedNo manufacturer report yet

Vehicles affected2504 models

ReportedSep 19, 1977Owners notified Jan 17, 1978

Complaints since0Same system, after the recall

Source: NHTSA recall 77V149000 and manufacturer quarterly reports. Started by the manufacturer.

What's wrong

The problem

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.

What to do

The fix

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.

Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.

4 models

Vehicles in this recall

Mack RL1976, 1977

Mack RS1976, 1977

Mack WL1976, 1977

Mack WS1976, 1977