NHTSA Campaign Id 84V033000; Date: Mar. 22, 1984
1983 Mack Dm Series; 1984 Mack Dm Series; 1983 Mack Mc Series; 1984 Mack Mc Series; 1983 Mack MH; 1984 Mack MH; 1983 Mack R Series; 1984 Mack R Series; 1983 Mack Rd Series; 1984 Mack Rd Series; 1983 Mack Rm Series; 1984 Mack Rm Series; 1983 Mack U Series; 1984 Mack U Series; 1983 Mack WS; 1984 Mack WS; 1983 Western Rl Series; 1984 Western Rl Series; 1983 Western Rs Series; 1984 Western Rs Series; 1983 Western Rwl Series; 1984 Western Rwl Series; 1983 Western Rws Series; 1984 Western Rws Series; 1983 Western Wl Series; 1984 Western Wl Series; 1983 Western Ws Series; 1984 Western Ws Series
Component: Steering:wheel And Handle Bar
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 4,393
Improper steering clamp bolts and torque applied during installation. The bolt could fail, allowing the steering yoke to become loose.
Inspection and, if necessary, installation of proper steering shaft clamp bolts tightened to specifications.
Vehicle description: heavy trucks. System: steering; shaft clamp bolts. Consequences of defect: this can lead to complete loss of steering controlwithout warning and possible vehicle crash.
Date Owners notified by Manufacturer: Nov 5, 1984
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