Steering:manual:shaft lower worm
Defect Summary
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.
Corrective Action
The dealer will secure the clamp bolt and make the necessary modifications on the lower steering shaft, free of charge.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Steering.
FAQ: Recall 77V011000
Your rights, the repair process, and what each field on this page means.
What is recall 77V011000?
NHTSA recall 77V011000 was issued by Mack Trucks, Inc. on January 1, 1977. It addresses: Steering:manual:shaft lower worm. The recall affects approximately 2,200 vehicles, with the defect involving the Steering component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 77V011000 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.