15 Exercise extreme caution when removing the factory coil spring. It’s a good idea to use a length of chain to secure the spring to the lower control arm to prevent its unanticipated escape. Slide in a ball-joint fork at the upper control arm and give it a couple of whacks with a hammer to pop it loose. Jack the suspension slightly to remove the nut before slowly releasing the jack. The upper ball joint will now slide out of the control arm. With this accomplished, simply remove the chain and extract the spring. Next, move to the inside and remove the crossbar bolts. Make note of the exact number of shims with each of the bolts, as you’ll need to reinstall these with the new A-arms. You can now remove the upper control arm.