NHTSA Campaign Id 77V011000; Date: Jan. 1, 1977
1974 Mack WL; 1975 Mack WL; 1976 Mack WL; 1974 Mack WS; 1975 Mack WS; 1976 Mack WS
Component: Steering:gear Box (other Than Rack And Pinion)
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 2,200
The lower steering shaft yoke clamp bolts on the involved vehicles may not have been sufficiently tightened. Should these bolts lossen and come off, the lower steering shaft could separate from the steering gear.
The dealer will secure the clamp bolt and make the necessary modifications on the lower steering shaft, free of charge.
Vehicle description: heavy trucks. System: steering; steering shaft, lower. Consequences of defect: separation of the lower steering control shaft loweryoke may result in loss of steering control and an accident.
Date Owners notified by Manufacturer: Mar 29, 1977
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