Pontiac 18028836 Pad Kit,Front Disc Brake

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The calipers of front disc brake for the models that came out in 1988 use different designs on disc brake caliper, but the following procedures should be observed. To change front disc brake pads remove the following: bleed two thirds of the brake fluid from the master cylinder, remove the front wheel lug nuts the car firmly lifted on jackstands, reference the position of the wheel relative to the axle flange, and finally, remove the front wheel. Keep the disc rotor with the inverted lug nuts, and thus compress the piston back into the caliper bore using the big adjustable pliers. In the case the special tools are available then these tools should be used to remove the spring pins and if they are not available then a brass punch and hammer can be used. Take out both the outer and inner pads, also undo the springs from the pad flanges. For installation, it is required to compress the piston fully, insert the inner pad on the top plate with wear sensor at the lower side and insert the outer pad and tap in the spring pins. Place the springs in the middle and replace the wheel and put the lug nuts tightly. Lower the vehicle, snug the wheel nuts to a specific torque and fill the master cylinder with fresh brake fluid then pump the brake pedal a few times to seated the linings. To remove the caliper, proceed in the same manner for the pad removal, but if overhauling the brake hose should be disconnected and the caliper mounting bolts be removed. Check and evaluate all parts and sub-systems of the equipment to detect sign of corrosion or any form of damage with the option of replacing the damaged part. Apply grease to the sleeves and screw them into the bore of the caliper, put on the caliper housing over the rotor then fasten the nut of the mounting bolts. If the brake hose was detached, reattach it and bleed the caliper as previously as well. To service a caliper, the assembly should be dismantled, checked for damage, its all components washed before being reassembled. The rear brake calipers have been redesigned for the 1988 series, and the procedure for the replacement of rear pads is equally as that with front ones. Once the old pads are out, the two way check valve can be taken off using a small screw driver from the piston assembly. In case leakage is observed, it is advised to overhaul the caliper. In order to prevent the pad pins to align perfectly to the pistons, when a new set of pads are to be installed one should make use of a piston rotator wrench in order to bottom out the pistons. The installation process is almost similar to that of the front calipers only a few differences would be expected. As for the front, to remove rear caliper, one must first relieve parking brake cable. The installation process is also the same, checking to make sure that the parking brake cable is fixed back and properly tensioned. The rear caliper overhaul involves removing the assembly, checking the parts and procedures involving cleaning and fitting of new seals and springs, and where necessary fitting of new springs are followed as done to the front calipers.

For installation, lubricate the new bushings and sleeves with silicone grease and install them in their grooves in the caliper mounting bolt bosses.

Check for leakage around the piston/caliper interface; if present, overhaul the caliper.