Vehicle recall 80V054000 · May 6, 1980
Mack R Series and U Series
The prefabricated pinch bolt clamp at the lower steering shaft lower yoke may not perform adequately when tightened to specifications.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- The prefabricated pinch bolt clamp at the lower steering shaft lower yoke may not perform adequately when tightened to specifications. The clamp may then deform and loss of clamping force and steering shaft disengagement may result.
- Remedy
- Dealer will retrofit with lower steering shaft lower yokes that provide for integral pinch bolt installation in place of previous separately fabricated clamp for the pinch bolt.
- Notes
- Vehicle description: trucks.system: steering; power steering shaft; fabricated pinch bolt clamp.consequences of defect: disengagement of the steering shaft may cause loss ofvehicle control without prior warning and, possibly, an accident.
Recall details
- NHTSA campaign
- 80V054000
- Reported to NHTSA
- May 6, 1980
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- January 31, 1981
- Vehicles potentially affected
- 109
- Initiated by
- NHTSA’s Office of Defects Investigation
- Components
- Steering › Gear box (other than rack and pinion)
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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