2. Once the caliper was unbolted from the steering knuckle and then supported on the frame by a hook, the tie rod end was unbolted. A few hits with a five-pound sledgehammer freed the ball joints from the steering knuckle. Off came the knuckle with the brake rotor still attached. With the three strut retaining bolts removed, the strut came out and was placed next to the steering knuckle. An air ratchet took care of the upper control arm bolts, as the upper control arm bushings were getting replaced as well. To get the strut out of the coil spring, we used a spring compressor mounted to the wall. By adding or removing the spacers, you set the ride height of your front suspension. We had to play around with the spacers before we found a good height. With the spacers installed, the new strut and spring was assembled on the spring compressor with the help of an impact wrench.