Vehicle recall 77V205000 · November 21, 1977
Mack DM, F and 10 more models
A deficiency exists in the welds securing the rear spring insulator bracket to the axle housing.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- A deficiency exists in the welds securing the rear spring insulator bracket to the axle housing. This is due to improper positioning of the weld, in relationship to the bracket and axle housing. Failure of the welds would cause separation of the spring insulator bracket and the axle housing, resulting in improper alignment of the affected axle.
- Remedy
- Dealer will reweld the insulator spring bracket at no cost to owner.
- Notes
- Vehicle description: heavy trucks.system: suspension; tandem axle.consequences of defect: this condition could cause a loss of vehicle controland a vehicle accident.
Recall details
- NHTSA campaign
- 77V205000
- Reported to NHTSA
- November 21, 1977
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- March 14, 1978
- Vehicles potentially affected
- 7,400
- Initiated by
- the manufacturer
- Components
- Suspension › Rear › Springs › Leaf spring assembly › Hanger/bracket
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.