GM 19140968 Caliper Asm,Front Brake (W/O Brake Pads) (Remanufacture)

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Purchase a caliper overhaul kit which contains all of the necessary replacement parts. Remove the caliper from the caliper bracket and remove the pads from the caliper. In this operation, the inlet brake line should be removed from the caliper. To minimize brake fluid leakage, it can be plugged by fitting a short piece of rubber hose, the same diameter as the connection, over the line, inserting a suitable bolt in the free end and clamping it. Use clean rags to pad the inside of the caliper. If you have access to compressed air, place an air nozzle into the caliper inlet hole and slowly apply air until the piston is forced out of its bore. CAUTION: Do not use your fingers to try and catch the piston as serious injury could result. If you do not have access to compressed air, hold the caliper with the inlet hole up and carefully bang the caliper down on a block of wood to force the piston out. As a last resort, temporarily re-install the brake line to the caliper and have an assistant depress the brake pedal. The fluid pressure will force the piston out. Inspect the piston for scoring, nicks, corrosion and worn or damaged chrome plating, and replace it if necessary. Remove the dust boot by prying with a screwdriver. Be careful not to scratch the housing bore. Remove the piston seal from its groove with a wood or plastic dowel. Do not use a metal tool here, as it could damage the bore. Inspect the caliper bore for scoring, nicks, corrosion or wear. Light corrosion can be removed with crocus cloth. If crocus cloth will not clean up the bore, the caliper housing must be replaced. Remove the bleeder screw. Clean the piston and housing bore and bleeder screw with denatured alcohol. Do not use gasoline or mineral-based solvents. Lubricate the bore and the new piston seal with clean brake fluid and install the seal in its groove. Be sure the seal is not twisted. Install the new dust boot onto the groove of the piston. Insert the piston in its bore and press it down, working it through its seal until it bottoms. Seat the new dust boot in the caliper bore. Install the bleeder screw. Apply multi-purpose lithium grease at all surfaces where the caliper assembly meets the caliper bracket. Complete the operation.

To remove the caliper, perform steps 2-4 of the pad replacement procedure, then remove the inner pad, the pad support spring clip from the piston, the caliper from the hanger, and the Li-shaped retainer from the fitting. Clean the outside of the caliper with denatured alcohol, remove the brake hose and discard the copper gasket, and remove the brake fluid from the caliper.

The first step is to purchase a caliper overhaul kit which contains all of the necessary replacement parts.

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After obtaining the overhaul kit, the caliper should be removed from the caliper bracket, and the brake pads should be removed from the caliper. Additionally, the inlet brake line should be removed from the caliper, and to prevent brake fluid leakage, it can be plugged using a short piece of rubber hose and a suitable bolt.