GM 18028780 Pad Kit,Rear Disc Brake

Disc brake pads are to be replaced on both the wheels as a general rule of practice. The common health risk that may be encountered by workers while working in brakes' system is asbestos dust. It is recommended that first you open the cap of the brake fluid reserve and then with the help of a syringe, drain two-third of the brake fluid and then dispose of it. Lift up the rear of the vehicle using jackstands and unlock the parking brake if it is presently engaged. Take off the wheel and use one lug of the wheel to secure the rotor, do this at one brake assembly at a time. For vehicles prior to 1988 x remove both the brake caliper and the brake pad in case you require a screwdriver to do so. Remove the sleeves and bushings from the caliper ears and also pull off the flexible two way check valve from the caliper piston. If leakage is observed, lubricate new sleeves and bushings must be lubricated with silicone grease, and put them into use. Coat a new check valve which is two way and place the inboard pad on the caliper such that the O-shape tab lies on the O-shape notch of the piston. Place the inboard pad with the wear sensor facing the former leading edge, the backing plate must rest against the piston. Fit the outboard pad, introduce the caliper and anchor it by pressing the brake pedal vigorously. With regard to vehicles manufactured from 1989 onwards, align a C-clamp with the caliper housing to force the piston to the most bottomed position; secondly, break the upper guide pin bolt of the caliper and dispose it. Turn the caliper accordingly to take off the pads and use brake system cleaner to clean the caliper and bracket since breathing the dust is dangerous. Examine guide pins and spokes for signs of corrosion and other kinds of abuse, and replace when necessary. At this point, install the outer pad into the caliper housing and, without touching the friction area, press the inner pad with the wear sensor into the piston until it is in contact, in the absence of contamination; Turn the caliper horizontally, and while aligning the holes, fit a new caliper upper guide pin bolt and tighten it to the required torque. Using the same steps, examine the parking brake levers again the stop and adjust the cables for the other rear caliper. Insert the wheels back in their position, lower the car and pump the brake pedal until the pads come into contact with the rotors; fill the brake fluid level in the reservoir while doing this.

Use channel-lock pliers or a C-clamp to push the pistons into the caliper bores for clearance. Note the installation of the old pads before removing them.