Removal
1. Raise the front of the car and secure it on stands. Remove the wheel.
2. Using a clamp, pinch the brake hose.
3. Clean the area around the brake hose connector and caliper. Unscrew the hose from the caliper.
4. Remove the brake pads.
5. If necessary, unscrew the caliper bracket mounting bolts.
6. Remove it from the hub.
Caliper repair
1. Carefully clean the caliper of brake dust and dirt.
(Material copied from this resource: «Opelbook.ru»)
2. Remove the piston from the caliper, which can be done by 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. Press the guide bushings out of the caliper body.
5. Wash all parts in methylated spirits or clean brake fluid and wipe them dry.
6. Dip the piston and new piston seal ring in brake fluid and apply a thin layer of brake fluid to the piston bore in the caliper.
7. Install the sealing ring into the caliper bore.
8. Install the dust cover on the piston so that the inner diameter of the cover 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 cover into the caliper until it locks. When installing the piston, the protrusions on the piston should be vertical.
9. Install the guide bushings into the caliper body.
Installation
1. If the caliper bracket was removed, install it on the steering knuckle and tighten the bolts to the specified torque. Screw the caliper onto the brake hose.
2. Install the caliper on the caliper holder. Remove air from the brake system.
3. Install the wheel and lower the vehicle.
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