When the front suspension strut or coil springs are exhibiting evidence of wear (e.g. fluid leakage, lack of damping action, sagging, or cracked coil springs), then they are to be removed and repaired accordingly. The struts are not serviceable and may be replaced when faulty, and the springs and other parts can be changed on an individual basis. Components of both sides need to be replaced at the same time to ensure the balanced attributes of both sides of the vehicle. After the assembly has been taken out of the car, remove all the dirt on the outside and place it in a vise. Install the coil spring compressor tools, not forgetting to ensure they are seated fully and tighten the spring to a point where all tension has been removed in the upper mount. Using an Allen key, loosen the strut piston rod and loosen the thrust bearing retaining nut using a box-end wrench. Persist with the withdrawal of the top mount, upper spring seat, then spring, then the boot, bearing and bump stop. Should there be a need to install a new spring, one should be careful when removing the old spring out of the compressor or when using it again, the spring may be under compression. The strut assembly being fully disassembled, inspect all parts, wear, and make sure the bearing is operating smoothly and replace parts where necessary. Look at the strut to see whether it is leaking, the piston rod to see whether it is pitting, and the strut body to see whether it is damaged. Check the working of the strut by passing the piston in both full and short strokes, and should the resistance be jerky or jumping, or the wear or damage of the strut evident: replace the strut. The sequence of reassembly is in the opposite order as disassembly, the coil springs must be fitted in place with the paint mark facing downward, the ends of the coil springs must be correctly in place in the lower and upper seats and the piston rod nut tightened to the required level.