Vehicle recall 84V033000 · March 22, 1984
Mack DM Series, Mack MC Series and 12 more models
Improper steering clamp bolts and torque applied during installation.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Improper steering clamp bolts and torque applied during installation. The bolt could fail, allowing the steering yoke to become loose.
- Remedy
- Inspection and, if necessary, installation of proper steering shaft clamp bolts tightened to specifications.
- Notes
- Vehicle description: heavy trucks.system: steering; shaft clamp bolts.consequences of defect: this can lead to complete loss of steering controlwithout warning and possible vehicle crash.
Recall details
- NHTSA campaign
- 84V033000
- Reported to NHTSA
- March 22, 1984
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- November 5, 1984
- Vehicles potentially affected
- 4,393
- Initiated by
- the manufacturer
- Components
- Steering › Steering wheel/handle bar
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Mack DM Series (1983-1984): 1984, 1983
- Mack MC Series (1983-1984): 1984, 1983
- Mack MH (1983-1984): 1984, 1983
- Mack R Series (1983-1984): 1984, 1983
- Mack RD Series (1983-1984): 1984, 1983
- Mack RM Series (1983-1984): 1984, 1983
- Mack U Series (1983-1984): 1984, 1983
- Mack WS (1983-1984): 1984, 1983
- Western RL Series (1983-1984): 1984, 1983
- Western RS Series (1983-1984): 1984, 1983
- Western RWL Series (1983-1984): 1984, 1983
- Western RWS Series (1983-1984): 1984, 1983
- Western WL Series (1983-1984): 1984, 1983
- Western WS Series (1983-1984): 1984, 1983
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.