Vehicle recall 77V149000 · September 19, 1977
Mack RL, RS and 2 more models
The front wheel aluminum hubs on the involved vehicles may be subject to cracks which may progress circumferentially around the barrel of the hub.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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.
- Remedy
- Dealer will install steel hubs in place of aluminum hubs without charge to owner.
- Notes
- 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 details
- NHTSA campaign
- 77V149000
- Reported to NHTSA
- September 19, 1977
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- January 17, 1978
- Vehicles potentially affected
- 250
- Initiated by
- the manufacturer
- Components
- Wheels › Multi piece
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
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