- Summary
- On certain fire trucks with tandem steer axles. The TRW tie-rod on the rear-most axle of a tandem axle is restrained from rotational movement by a pair of anti-rotation seals located at the ball socket joints. These anti-rotation seals will compress over time. If the anti-rotation seal allows too much motion, the seals can deteriorate, allowing contact between the ball socket and the ball shaft. This metal-to-metal contact will transmit forces into the tie-rod tube, causing fatigue failure initiating at the root of the female treads.
- Consequence
- Failure of the tie-rod will allow one of the wheels to swing to the limit of its steering stop, potentially causing a loss of vehicle control, increasing the risk of a crash.
- Remedy
- Dealers will replace the tie rod. Notification to owners began November 7, 2003. Owners should contact pierce at 1-888-974-3723.