NHTSA Campaign Id 79V164000; Date: Jul. 9, 1979
1979 Mack RL; 1979 Mack RS; 1979 Mack RWL; 1979 Mack RWS; 1979 Mack WL; 1979 Mack WS
Component: Steering:wheel And Handle Bar
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 4,640
The flange head pinch bolts used in the yokes of the steering shaft assemblies may have been overstressed due to the bolts not being tightened to specifications. As a result, the pinch bolts could break while in service.
Flange head pinch bolts will be replaced with standard grade 8 fasteners without charge to owner.
Vehicle description: trucks. System: steering; flange head pinch bolts. Consequences of defect: if breakage occurs, loss of steering control and avehicle accident could occur.
Date Owners notified by Manufacturer: Jan 11, 1980
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