Removal
1. Prepare the car for work (see, "Preparing the car for maintenance and repair").
2. Remove the wheel (see "Wheel - replacement").
3. Unscrew the bolt-fitting of the brake hose tip (see "Brake hoses - replacement").
Warning: Do not press the brake pedal when the brake hose is disconnected.
4. Remove the caliper from the steering knuckle and take out the brake pads (see "Front brake pads - replacement").
Repair
Note: Subject to repair (anthers and cuffs are supplied as spare parts) brake mechanism support only with removable shoe guide. Brake mechanism support with shoe guide made as a single element with steering knuckle cannot be repaired, in case of malfunction it should be replaced as a whole.
(Material copied from this resource: Opelbook.ru)
1. Push the piston out through the hole for the bolt-fitting.
2. You can also use a pneumatic tool by applying a small amount of compressed air pressure.
Warning! Be careful, the piston may shoot. To avoid injury and damage to the piston, place a rag or a wooden block between the piston body and the bracket.
3. Remove the piston from the caliper body.
4. Remove the boot...
...and carefully remove the ring, trying not to damage the cylinder mirror.
5. Replace the removed dust cover and seal, inspect the surfaces of the piston and cylinder; in case of wear, scratches or corrosion, we replace the parts.
6. Before assembly, lubricate the parts with clean brake fluid.
7. Install the parts in the reverse order, aligning the recesses in the cylinder during assembly...
...and on the piston.
Installation
1. Install the caliper in the reverse order, replacing the brake hose sealing ring with a new one.
2. Remove air from the brake hydraulic system (see "Hydraulic brake drive - bleeding") and make sure that the connection between the hose tip and the caliper is tight.
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