Suspension:tandem axle:rear:leaf spring assembly
Defect Summary
The spring seat plate, located between the axle housing and the suspension springs, may deform due to spring bending. As a result, the clamping force in the assembly may be reduced. Loss of clamping force could cause spring failure and the axle will dislocate. Also, the tire could come into contact with the spring.
Corrective Action
The dealer will replace the existing spring seat with a newly fabricated seat which is welded to the housing. An improved spring clamping plate and new springs will also be installed without charge.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Suspension.
FAQ: Recall 79V171000
Your rights, the repair process, and what each field on this page means.
What is recall 79V171000?
NHTSA recall 79V171000 was issued by Mack Trucks, Inc. on July 12, 1979. It addresses: Suspension:tandem axle:rear:leaf spring assembly. The recall affects approximately 1,706 vehicles, with the defect involving the Suspension component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 79V171000 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.