NHTSA Campaign Id 81V156000; Date: Dec. 29, 1981
1978 Western Rwl Series; 1979 Western Rwl Series; 1980 Western Rwl Series; 1981 Western Rwl Series; 1978 Western Rws Series; 1979 Western Rws Series; 1980 Western Rws Series; 1981 Western Rws Series
Component: Vehicle Speed Control:springs
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 186
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".
New anchor brackets and spring extensions for the throttle return springs, will be installed at corrected locations without charge to owner.
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.
Date Owners notified by Manufacturer: Jul 13, 1982
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