English
Key for Performance & Handling
From ball joints to wheel bearings, loose suspension parts can cause issues like poor alignment, increased tire wear and diminished handling which can all have serious consequences for a vehicle’s performance. To ensure that the suspension is properly functioning, checking suspension components for looseness is an essential part of vehicle maintenance.
Looking for Looseness in Suspension Components
When it comes to examining suspension parts, using a tool like a suspension wear indicator can help you find looseness in several components in the suspension system. Also known as a Mueller tool or a bushing inspection tool, this device is designed to sit under the wheel and works best on a lifted vehicle. It allows you to move the suspension in ways you can’t with the wheels hanging or with the car sitting on the ground or on the alignment rack.
Setting up the Vehicle
Start by having wheel chocks under the wheels you aren’t working with and have the vehicle in park. You might want the brakes depressed which will help keep the wheels from moving. It is key to have all the force from the tool to be directed to the wheel assembly.
Safely lift the vehicle 2"-3" to get the tool under the tire. Place the tool with the rubber roller under the tire, aiming to have the tool in the middle.
Inspecting Suspension Parts
The placement of the tool dictates what direction you’ll be inspecting the movement. By changing the direction of how the tool is placed under the tire, you’ll put force in a different direction to help you detect any loose components.
Place the handle facing in to look at the in and out direction of the tires. Or flip the tool around to examine the components in the direction of travel. Once you have the tool(s) in place, grab the bar and work it up and down.
By pulling the tool up and down from under the vehicle, you’ll be able to look for movement in the ball joints, bushings and wheel bearings. You can also install a dial indicator to help determine if there is movement with a part.
Visit Garage Gurus for onsite and online automotive training courses that can advance your career.
The content in this article is for informational purposes only. You should consult with a certified technician or mechanic if you have questions relating to any of the topics covered herein. Tenneco will not be liable for any loss or damage caused by your reliance on any content.