GM 18028836 Pad Kit,Front Disc Brake

The pads of disc brakes on a car should be changed in pairs; it is unadvisable to change the pad on just one wheel. To start with, unlock the brake caliper from the rotor and use a C-clamp to condition the piston into the caliper in order to first create enough room for the new brake pads. You have to use the water pump pliers to grab and take off the retaining clip on the backside of the outboard pad. The inboard pad, held by the piston via four small tangs on circular spring clip, comes off by hand. Couples of things to be careful of are the position of the two pins of the backing plate relative to the deep round cutouts of the piston face since these pins arrest the rotation of the piston through the actuator screw when parking have is on. Finally, take out the bolt boots, bushings and sleeves threaded through the Caliper Mounting Bolts, bottom the Piston on the Cylinder Bore and fit new pads. Sometimes there is leakage around the piston/caliper interface; in this case the caliper must be overhauled. Silicone grease should be applied on the new bushings, bolt boots and sleeves then they should be fixed in their respective positions. Insert the inboard pad assembly into the caliper in a manner that the O formed tab fits into the O formed notch in the piston of the caliper while further realigning the piston of the caliper. If properly aligned, the inboard pad assembly with the wear sensor will be at the leading edge of the backing plate laid smooth against the piston. Third, you should fit the outboard pad assembly into the caliper firmly. Place the caliper back over the rotor and torque the bolts to the factory set standard torque value. Position the linings by depressing the brake pedal with sufficient force and subsequent jiggling of at least three times and fix the parking brake lever into the actuator screw hex. Last, ensure the working of the brakes and then move the car into traffic or road with interest.

It is recommended that disc brake pads be replaced in pairs, that is, both wheels should be fitted with new pads. To replace the front calipers, take off the outer pad using the water pump pliers; this is easier to do. In the case of the inboard pads, there is a retaining clip that can be pulled out of the caliper piston: the inner pad can be removed by pulling out the retainer clip. See that there is any scoring marked on the caliper bolt and make sure that there is any sign of either rusting or bluing on the contact faces of the bosses that mounts the caliper. One should unroll a small part of the dust boot to see the side of the piston for corrosion and leaking hydraulic brake fluid, if there is sever contamination or leakage the calliper should be reborn. To lubricate put silicone grease both the new bushings and sleeves and then put it in the groove in the caliper mounting bolt bosses. Attach the gap retainer clip to the inboard pad, this may be brought from the previous pad if it is not furnished with it. Place and fix the inboard pad to which the wear sensor is attached at the leading edge towards the piston, so that the spring clip is clipped. Last, fit the outboard pad by replacing the spring clip in the detents and finally the caliper.