C4 Suspension Overview



We offer a complete line of suspension services, including repairing, rebuilding, and revalving of shock absorbers, front forks, and steering dampers of all major manufacturers of motorcycle and car suspension. It's alright because we will subtract the excess oil later on. Once the oil is in the fork, it is time to bleed the damper rod. You can see it's easy to remove the cotter pin and castle nut now that pressure is relieved from the spring. Fork Rebuild - includes disassembly, complete cleaning, polish fork tubes, inspect, measure service limits of parts, bleed with new fork suspension fluid and set oil level in forks.

The upper arm's ball joint stud goes through the knuckle and is fastened with a nut, washer, and cotter pin. With the spring compressed, unscrew the fork cap from the damper rod. Before compressing the spring, I removed the sway bar. To my surprise, the only bushings that required replacement were the strut rod bushings.

If you have 70K or more on the car (7x0 series only), you will need to replace the bushings on the rod that fastens into the lower a-arm. To get the maximum benefit, upgrade the shocks, replace bushings, get better tires, better brake pads because you will find yourself driving faster in the turns.

The axle shaft universal joints are also an integral part of the suspension camber control. 15: The upper ball joint can be removed by using a drill bit, chisel or die grinder to remove the rivets. 30: Install the upper control arm bumpers. Coil springs allow the vehicle to absorb bumps, and keep the passenger comfortable.

The jack must be located under the control arm- where the shock absorber mounts "D". This location, along with longer spring bolts will lower the rear of the car between one and two inches. Springs absorb the energy and shocks control the release of that energy. Tip: You'll have to use your jack to support the lower control arm Suspension Disassembly in order to remove the springs, so make sure you place a few jack stands under the vehicle for support.

Step 3: Loosening but not removing the strut top mounts and sway bar end link bushings can provide a bit more suspension travel for easier axle removal. 06: Disconnect the idler arm bracket from the passenger side of the frame and then use the tie rod separator to remove the control valve stud from the Pitman arm.

While the basic concept of a CV joint axle is the same from vehicle to vehicle, there are a number of different peculiarities that make access to a service manual an important first step before disassembly. Loosen the lug nuts a half-turn or so. Jack up the vehicle and support it on safety stands-an old stump or some cement blocks won't cut it. Remove the wheel.

31: Install the spindle onto the lower control arm and tighten the nut. Removing the lower control arm 15mm pivot bolts can be difficult. Accessing the inner 18mm nut requires a shallow socket. Of course, a full rebuild of the wear parts of the suspension would get everything up to like-new tightness, with a complete PST suspension rebuild kit including ball joints, steering linkage, and factory-style lower control arm bushings.

The stiffness of the springs affects how the sprung mass responds while the car is being driven. Cutting or heating springs to alter the vehicle's ride height is never recommended, and will create unpredictable, often uncontrollable driving conditions. Springs are sold in matched pairs and include the pressed in bushings if applicable.

36: With the new steering linkage assembled, measure the length of one side of the old tie rod assembly. To achieve this we went with PST Polygraphite bushings in the upper control arms and at the sway bar mounts and links, and by adding PST weld-in lower control arm bracing.

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