Rear Wheel Cylinder — Removal and Installation (Opel Frontera A)

A repair kit is available for repairing the wheel cylinder. Compare the repair kit parts with the removed parts to eliminate assembly errors.

Removal

1. Raise the rear of the vehicle and support it on stands.

2. Loosen the nuts and remove the wheel.

3. Remove the brake drum. This will provide better access to the wheel cylinder.

4. In the engine compartment, unscrew the reservoir cap on the master brake cylinder.

5. Place the plastic wrap over the neck and screw on the lid. This will prevent brake fluid from leaking out of the system.



6. Loosen the union nut of the brake line from the back of the brake shield and disconnect the line.

7. Carefully move the pipeline to the side.

8. Seal the end of the pipe with tape to prevent dirt from getting into the system.

9. Loosen the cylinder mounting bolts and remove the cylinder from the outside.

Repair

1. The illustration Wheel Cylinder Assembly Diagram shows the wheel cylinder assembly diagram. After removing one of the protective caps, the pistons exit the cylinder under the action of the spring. If this does not happen, tap the cylinder on a wooden block.

2. Remove the cuffs. Pay attention to their position.

3. Clean and check all parts thoroughly. If there are cracks or burrs on the working surface of the cylinder, it must be replaced. When replacing any part, the entire repair kit must be installed.

4. Lubricate the seals with brake fluid or grease and insert the first seal with the working edge into the cylinder.

5. Lubricate the piston and insert it, pressing it against the cuff.

6. On the other side, insert the return spring and insert the second cuff into the cylinder.

7. Insert the second piston, being careful not to push out the first piston.

8. Install protective caps on both sides of the pistons and cylinder body.

9. Clean the cylinder from brake fluid or grease.

Installation

1. Install the wheel cylinder from the outside onto the brake shield.

2. Screw in the mounting bolts from the inside and tighten them to a torque of 10 Nm.

3. Attach the pipeline to the cylinder and tighten the union nut to 16 Nm. The nut thread has a fine pitch. Therefore, screw it on and tighten it carefully.

4. Carefully connect the brake shoes to the wheel cylinder.

5. Install the brake drum as described above.

Material taken from an internet portal opelbook

6. Remove the polyethylene from the neck of the tank.

7. Bleed the brake system as described below.