Acura ILX 2013-2021 Suspension Bolt Torque Specifications

Proper torque ensures that suspension components are securely fastened, preventing loosening, excessive stress on parts, and potential failure. Under-torquing can lead to parts coming loose, while over-torquing can damage threads, bolts, or the components themselves, potentially causing alignment issues or a complete suspension failure. For example, if the lower control arm bolts are under-torqued, the arm can shift slightly during driving, leading to instability and uneven tire wear. Over-torquing, like with a wheel bearing bolt, can deform the bearing and lead to premature failure.

Lb-ft (pound-foot) and Nm (Newton-meter) are both units of torque. Lb-ft is commonly used in the United States, while Nm is the standard unit in many other parts of the world. 1 lb-ft is approximately equal to 1.356 Nm. You'll need to ensure your torque wrench is set to the correct unit of measurement to achieve the proper torque. Accidentally setting a torque wrench to 100 lb-ft when the spec is 100 Nm could result in significantly over-torquing the bolt.

It is generally recommended to use new bolts, especially for critical suspension components, whenever they are removed. Many suspension bolts are designed as 'torque-to-yield' meaning they are designed to stretch slightly upon tightening. Reusing these bolts can compromise their structural integrity and ability to maintain the proper clamping force. For instance, re-using the shock absorber mounting bolts increases the risk of them breaking due to previous stretching.

It's good practice to re-check suspension bolt torque after the first 50-100 miles following any suspension work. After this initial check, an annual inspection during regular maintenance is typically sufficient. However, if you experience unusual noises or handling issues, check the torque immediately. For instance, after changing a sway bar link, you should re-torque after driving to ensure the link is properly secured.

Always follow the torque wrench manufacturer's instructions. Ensure the torque wrench is calibrated correctly. Gradually increase torque to the specified setting. Avoid over-tightening. Apply torque smoothly and steadily. For example, if you have a click type torque wrench, stop tightening when you feel or hear the click. Avoid trying to make the wrench click louder, that is a sign you're over-tightening.