Recall 91V-187: 1985–1991 Oshkosh F, 1985–1991 Oshkosh P
OSHKOSH TRUCK CORPORATION recall for service brakes, hydraulic, reported to NHTSA on Oct 27, 1991, covering about 130 vehicles.
The problem
These vehicles have front axles with brake cam operation opposite to the rotation of the brake drum (Cam opposite), and there is a tendency for brakes to chatter under low air pressure, resulting in vibrations. The vibrations induce stresses in the tie rod end beyond its endurance limit, and result in cracks in the threaded portion of the stud where the tube ends.
The risk
Cracks in the tie rod can result in separation of thetie rod and loss of vehicle control without prior warning.
The fix
Replace the cam opposite brake actuation with cam same brake operation, by interchanging the left and right cam assemblies to avoid brake chattering; and replace tie rods.
Notes
System: brakes and front suspension.vehicle description: heavy trucks with 18000 lbs. Driving front axles.
Recall details
| Manufacturer | OSHKOSH TRUCK CORPORATION |
|---|---|
| Component | Service Brakes, Hydraulic › Foundation Components › Drum |
| Recall started by | the manufacturer |
| NHTSA campaign number | 91V187000 |
Vehicles in this recall
| Vehicle | Model years | |
|---|---|---|
| Oshkosh F | 1985, 1986, 1987, 1988, 1989, 1990, 1991 | All years |
| Oshkosh P | 1985, 1986, 1987, 1988, 1989, 1990, 1991 | 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 91V-187?
These vehicles have front axles with brake cam operation opposite to the rotation of the brake drum (Cam opposite), and there is a tendency for brakes to chatter under low air pressure, resulting in vibrations. The vibrations induce stresses in the tie rod end beyond its endurance limit, and result in cracks in the threaded portion of the stud where the tube ends.
How is recall 91V-187 fixed?
Replace the cam opposite brake actuation with cam same brake operation, by interchanging the left and right cam assemblies to avoid brake chattering; and replace tie rods.
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.