NHTSA Campaign Id 83V041000; Date: Apr. 14, 1983
1980 Mack RWL; 1981 Mack RWL; 1980 Mack RWS; 1981 Mack RWS; 1980 Mack WL; 1981 Mack WL; 1980 Mack WS; 1981 Mack WS
Component: Steering:gear Box:shaft Pitman
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 1,515
The pitman arm, a lever that transmits turning movements from the steering gear to the steering linkage, may loosen or break at its connection to the steering linkage. The failure can prevent turning attempts from having any effect. The defect is caused by incorrect assembly of the ball stud connection in the pitman arm.
The dealer will install a new pitman arm ball assembly at no charge.
Vehicle description: heavy trucks. System: steering; pitman arm. Consequences of defect: in the event of such a failure, loss of vehicle controlcould occur without prior warning and an accident could result.
Date Owners notified by Manufacturer: Oct 24, 1983
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