Vehicle recall 77V096000 · June 17, 1977
Mack CF, DM and 5 more models
The front wheel rim clamp studs, installed on the involved vehicles, may not have been manufactured correctly, causing a brittle condition in the thread root area.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- The front wheel rim clamp studs, installed on the involved vehicles, may not have been manufactured correctly, causing a brittle condition in the thread root area. The studs could eventually crack and break when wheel nuts are tightened to specifications.
- Remedy
- The dealer will replace all suspect front wheel studs, without charge to owner.
- Notes
- Vehicle description: heavy trucks.system: wheels; studs.consequences of defect: wheel stud failure could cause a loosened tire assemblyand impaired vehicle control. Failure of more than one stud could causeseparation of the tire and rim assembly, causing loss of vehicle control and anaccident.note: driver may be alerted to the condition by a wobble or vibration in theaffected wheel.
Recall details
- NHTSA campaign
- 77V096000
- Reported to NHTSA
- June 17, 1977
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- September 9, 1977
- Vehicles potentially affected
- 825
- Initiated by
- the manufacturer
- Components
- Wheels
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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