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| articles:400e_brake_caliper_rebuild [2021/12/23 07:46] – [Disassemble] john5788 | articles:400e_brake_caliper_rebuild [2021/12/30 08:47] (current) – [Reassemble] john5788 | ||
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| - Use 1.5" piece of wood on a pair of opposing pistons to prevent them from moving | - Use 1.5" piece of wood on a pair of opposing pistons to prevent them from moving | ||
| - Use brake piston pliers if necessary | - Use brake piston pliers if necessary | ||
| - | - Remove square seal in cylinder | ||
| - Remove piston dust boot seal | - Remove piston dust boot seal | ||
| + | - Remove square seal in cylinder | ||
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| - Use 1" piece of wood as a stop for the pistons | - Use 1" piece of wood as a stop for the pistons | ||
| - Use brake piston pliers if necessary | - Use brake piston pliers if necessary | ||
| - | - Remove square seal in cylinder | ||
| - Remove piston dust boot seal | - Remove piston dust boot seal | ||
| + | - Remove square seal in cylinder | ||
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| ==== Reassemble ==== | ==== Reassemble ==== | ||
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| + | Refinishing the calipers with paint or powder coat is recommended. Make sure to mask off appropriate areas before painting (inside the caliper, pistons, dust seal groove, bleeder thread, brake line thread, mounting threads, sensor wear bracket mounting thread) | ||
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| + | To rebuild the rear calipers, the repair kit (000 421 72 86, requires 2) needs to be ordered. This kit comes with the square seals, dust seals, and the metal heat shields required for caliper reassembly. | ||
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| + | - Clean the caliper. Blow out any remaining paint dust, dirt, or oil from inside the caliper through the holes for the brake line, bleeder valve, and inside the cylinders | ||
| + | - Install new square seals in cylinder bore | ||
| + | - Clean the pistons | ||
| + | - Install dust cap on the piston | ||
| + | - Lubricate piston and cylinder with brake assembly fluid and reinsert piston into cylinder bore. | ||
| + | - Check orientation of piston with heat shield before inserting piston into cylinder bore | ||
| + | - Use a long screw driver or a long 1/4" extension across the top of the piston to help drive the piston down | ||
| + | - Seal dust cap along the collar of the cylinder bore | ||
| + | - Install new metal heat shields on top of the pistons | ||
| + | - Use caliper piston compressor if necessary | ||
| + | - Install new brake bleeder valves | ||
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