Recall 85V-113: 1982–1985 Mack MH
MACK TRUCKS, INCORPORATED recall for service brakes, air, reported to NHTSA on Sep 17, 1985, covering about 5,020 vehicles.
The problem
The dual double check valve may not release the proper air volume to the brake system, causing a slight timing delay between the tractor and the trailer brake system. Consequences of defect: if the brakes are suddenly applied, the trailer could jackknife without warning to the operator, which could result in a vehicle crash.
The fix
Install two new sleeves in the dual double check valve which will increase air flow.
Notes
Vehicle description: heavy duty tractor trailer combinations. System: brakes, tractor to trailer.
Recall details
| Manufacturer | MACK TRUCKS, INCORPORATED |
|---|---|
| Component | Service Brakes, Air |
| Recall started by | the manufacturer |
| NHTSA campaign number | 85V113000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Mack MH | 1982, 1983, 1984, 1985 | All years |
Not every vehicle of these model years is included. Enter your VIN at nhtsa.gov/recalls ↗ or ask a dealer.
Frequently asked questions
What is recall 85V-113?
The dual double check valve may not release the proper air volume to the brake system, causing a slight timing delay between the tractor and the trailer brake system. Consequences of defect: if the brakes are suddenly applied, the trailer could jackknife without warning to the operator, which could result in a vehicle crash.
How is recall 85V-113 fixed?
Install two new sleeves in the dual double check valve which will increase air flow.
Is the recall repair free?
Yes. Safety recall repairs are free at authorized dealers. Check whether your vehicle is included with its VIN at nhtsa.gov/recalls.