Vehicle recall 79V165000 · July 9, 1979
1979 Mack R
The pinch bolt hole center to steering gear input shaft on the lower yoke dimension exceeds specifications.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- The pinch bolt hole center to steering gear input shaft on the lower yoke dimension exceeds specifications. If the pinch bolt becomes loose, it will not engage the steering gear input shaft notch and the shaft could slip off.
- Remedy
- The proper steering gear input shaft yoke will be installed without charge to owner.
- Notes
- Vehicle description: trucks equipped with SG46 manual steering gear.system: steering; shaft assembly.consequences of defect: should slippage occur, loss of steering control and anaccident could result without prior warning.
Recall details
- NHTSA campaign
- 79V165000
- Reported to NHTSA
- July 9, 1979
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- November 28, 1979
- Vehicles potentially affected
- 80
- 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.
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.