Vehicle recall 83V121000 · November 18, 1983
Mack FWS and RWL
Mounting of the pitman arm may loosen and lead to excessive wear in either the pitman arm splines or the steering gear shaft splines, or both.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Mounting of the pitman arm may loosen and lead to excessive wear in either the pitman arm splines or the steering gear shaft splines, or both. This condition is due to incorrect tightening of the mounting screws during assembly.
- Remedy
- The dealer will inspect and properly tighten the pitman arm retaining screws.
- Notes
- Vehicle description: heavy trucks.system: steering; pitman arm.consequences of defect: looseness in the steering linkage may result in loss ofsteering control and the possibility of a vehicle accident.
Recall details
- NHTSA campaign
- 83V121000
- Reported to NHTSA
- November 18, 1983
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- April 13, 1984
- Vehicles potentially affected
- 1,377
- Initiated by
- the manufacturer
- Components
- Steering › Gear box › Shaft pitman
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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