Removal
1. Unscrew the bolt and disconnect the brake hose from the caliper. To prevent brake fluid from leaking, close the brake hose hole with a plug.
2. Replacing the brake caliper is part of the brake pad replacement procedures (See. subsection 12.4.).
Caliper repair
1. Using a small screwdriver, remove the dust boot from the caliper piston.
2. Remove the piston from the caliper, which can be done using low-pressure air supplied to the brake cylinder through the hole for connecting the brake hose. In this case, install a wooden block instead of brake pads.
3. Remove the sealing ring from the groove in the caliper bore.
4. Wash all parts in methylated spirits or clean brake fluid and wipe them dry.
5. Dip the piston and new piston O-ring into brake fluid and apply a thin layer of brake fluid to the piston bore in the caliper. Install the O-ring into the caliper bore.
(The original article is on the portal: «TOYOTAMAN»)
6. Install the dust boot on the piston so that the inner diameter of the boot fits into the groove of the piston. Insert the piston into the caliper and at the same time insert the outer edge of the dust boot into the caliper until it locks into place.
7. Lubricate with high temperature grease and install the guide pins into the caliper body.
Installation
Installation is performed in the reverse order of removal. Remove air from the brake system.