How are Trailing Arm issues diagnosed?
Trailing arm failure diagnosis is as simple as finding that the trailing arm is bent, cracked, or broken. This can be done in most cases by a visual inspection, and the tire associated with that trailing arm will likely show wear patterns different than other tires. If the trailing arm is found to have worn bushings, excess movement, or if it makes noise as it articulates, the bushings will likely be replaced in lieu of the trailing arm.
How are Trailing Arms replaced?
Replacing a trailing arm will require the vehicle to be lifted, then the axle or control arm connecting to the trailing arm will need to be supported independently of the vehicle. This will allow the trailing arm to sit in a neutral position, with no weight pushing or pulling the trailing arm in any direction. Afterwards, the trailing arm will be released at the mounting points, removed, and replaced. Finally, the bolts for the trailing arm and wheel will be tightened to proper torque specifications once they are fitted onto the vehicle, and it is time for a test drive.
RepairPal Recommendations for Trailing Arm issues
When replacing the trailing arm bushings, we recommend replacing both sides at once. Even if the trailing arm bushings have failed due to hitting a pothole, the bushings on the other side will be softer, and may lead to failure of the old bushings more quickly.
What to look out for when dealing with Trailing Arm issues
Trailing arm bushings that have failed where the trailing arm connects to the frame can easily cause damage to that mounting point. If the new trailing arm and bushing will not align properly on the vehicle, or the frame is obviously damaged, the vehicle subframe or crossmember may call for replacement. In this situation it is important to have the vehicle assessed by a professional to ensure the vehicle is safe to operate.
Can I replace the Trailing Arm myself?
Replacing a trailing arm requires a light amount of knowledge and basic tools. Proper lifting and supporting techniques should be adhered to, and the fasteners should be replaced and torqued to manufacturer specifications. Otherwise, this is a straightforward job, and a professional will only need to be consulted of the trailing arm mount to the frame is damaged.