Vehicle recall 81V156000 · December 29, 1981
Western RWL Series and RWS Series
The throttle return springs on the affected vehicles provide less than the required torque, causing a sluggish return of the throttle to the idle position after the accelerator…
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- The throttle return springs on the affected vehicles provide less than the required torque, causing a sluggish return of the throttle to the idle position after the accelerator pedal is released. This fails to comply with the requirements of federal motor vehicle safety standard no. 124, "accelerator control systems".
- Remedy
- New anchor brackets and spring extensions for the throttle return springs, will be installed at corrected locations without charge to owner.
- Notes
- Vehicle description: trucks.system: fuel; throttle return springs.consequences of defect: a failure of the accelerator function to respondnormally could cause an accident in certain traffic situations.
Recall details
- NHTSA campaign
- 81V156000
- Reported to NHTSA
- December 29, 1981
- Filed by
- MACK TRUCKS, INCORPORATED
- Owner notification
- July 13, 1982
- Vehicles potentially affected
- 186
- Initiated by
- the manufacturer
- Components
- Vehicle speed control › Springs
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Western RWL Series (1978-1981): 1981, 1980, 1979, 1978
- Western RWS Series (1978-1981): 1981, 1980, 1979, 1978
Has your Western been repaired?
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