Pontiac 12518935 Pad Kit,Front Disc Brake

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The disc brakes need consistent and simultaneous replacement of brake pads irrespective of the wheels on which they are fixed. As with many auto repair projects, care should be taken to avoid coming in contact with asbestos dust which is known to be dangerous to health. To start off, take off the cap on the brake fluid reservoir then drain about sixty milliliters into an absorbent material for disposal. Lift the front of the vehicle and support it with jack stands, then unbolt the front wheel, and install a couple of the wheel lugs (with flats on the inside towards the rotor) to help hold the rotor in-place. In the case of a single-piston caliper, pull the piston back into its bore by using the C-clamp or flat bar; while doing so master cylinder fluid should not spill. It is necessary to use an Allen wrench to carry out the removal of two caliper mounting bolts and the brake line retaining clip. For a dual piston caliper remove circlip and retainer pin and for reuse remove them and replace them with new one, before working on the wheel and hub mark them for realignment. Raise the lower end of the caliper and support with stiff wire; do not pull the rubber brake hose tightly. Before removing the pads, use the channel-lock pliers or the C-clamp in forcing the pistons into the caliper bores for the clearance. You definitely have to remember to install the old pads prior to pulling them out of the caliper, then first clean the caliper and the bracket with aerosol brake system cleaner. fit the new pads with the outer pad which has the bias spring secures to the caliper housing and the inner pad with the wear sensor goes into the pistons. Check that the pads are correctly located and clean and free from oil or grease. Place the caliper and pad assembly back onto the rotor, expand the bias spring on the outer pad, fit a new retainer pin and attendant circlip. Do the same thing to all the remaining front caliper until each of them has a corresponding accelerometer print. Fix the wheels back in position, lower the car and start the engine, then apply the brake pedal slowly and with pressure three time to allow the pads to bite against the rotors before opening the bonnet to refill the brake fluid reservoir.

Lubricate a new two-way check valve and position the inboard pad in the caliper, ensuring the O-shaped tab engages the O-shaped notch in the piston. Install the inboard pad with the wear sensor at the leading edge, ensuring the backing plate lies flat against the piston. Install the outboard pad, then reinstall the caliper and seat it by applying the brake pedal firmly.