Structure:fifth wheel assembly
Defect Summary
Due to improper and inadequate welding practices, the fifth wheel on the involved vehicles is defective. Frame mounted supports may have incomplete or poor quality welds. The welds could subsequently fail allowing separation of the tractor from the trailer.
Corrective Action
The dealer will inspect and remove the fifth wheel and reweld the mounting angles at no charge to the owner.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Trailer Hitches.
FAQ: Recall 84V140000
Your rights, the repair process, and what each field on this page means.
What is recall 84V140000?
NHTSA recall 84V140000 was issued by Mack Trucks, Inc. on November 7, 1984. It addresses: Structure:fifth wheel assembly. The recall affects approximately 64 vehicles, with the defect involving the Trailer Hitches component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 84V140000 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.