My brakes pretty much suck and the seal around the piston is completely torn. Rebuild kits are only $7 as opposed to getting another new caliper. But I've got no clue how to rebuild it.
Any advice here?
buy a new one. when it comes to brakes if you dont know what your doing it could end badley. plus new calipers really arnt that expensive
Rebuild is very easy. When you get the caliper off the car, use an air compressor through the fluid entry to blow the piston out. Remove old piston dust boot and piston ring. Clean the inside of the caliper out. Apply brake fluid generously around the new seal and insert/seat. Coat the inside wall of where the piston goes with brake fluid. Put new dust boot around piston. Push piston back in to caliper. Push the dust boot in to place. Reinstall on car. Bleed brakes. Done! This will save you a lot of money.
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make damn sure you have a block of wood or a few rags there to prevent it from shooting out and smacking the other side of the caliper and damaging itOriginally Posted by black07g6gtp
yeah there pretty simple
•Remove the brake caliper piston from the caliper bore by directing low pressure compressed air into the caliper bore through the fluid inlet hole.
•Remove the retaining ring that secures the dust boot to the caliper housing.
•Remove the piston dust boot seal (2) from the seal counterbore in the caliper (5). Discard the boot seal.
•Using a small wooden or plastic tool, remove the piston seal (4) from the caliper bore . Discard the piston seal.
•Remove the bleeder valve cap (6).
•Remove the bleeder valve (7).
Important: Do not use abrasives to clean the brake caliper piston.
•If cracks, scoring, pitting, excessive rust, and/or excessive corrosion are present in the caliper bore, replace the caliper assembly.
•If light rust or light corrosion are present in the caliper bore, attempt to remove the imperfection with a fine emery paper. If the imperfection cannot be removed, replace the caliper assembly.
•Clean the brake caliper piston bore and seal counterbore, and the caliper piston with denatured alcohol, or equivalent.
•Dry the caliper piston bore and counterbore, and the piston with non-lubricated, filtered, compressed air.
•Inspect the caliper piston for cracks, scoring, and/or damage to the plating. Replace the caliper piston if any of these conditions exist.
•Inspect the caliper mounting holes for cracks, scoring, pitting, rust and/or excessive corrosion. Replace the caliper assembly if any of these conditions exist
•Lubricate the new piston seal (4) with Delco Supreme 11 GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
•Install the lubricated, new piston seal (4) into the caliper bore.
•Apply a thin coat of Delco Supreme 11 GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container onto the outer surface area of the caliper piston (3).
•Install the bottom half of the caliper piston (2) into the caliper bore.
•Install the new piston dust boot seal (1) over the caliper piston (2).
•Compress the caliper piston (2) to the bottom of the caliper bore.
•Fully seat the piston dust boot seal (1) into caliper counterbore.