Contents: Removal ↓ Installation ↓
We replace the rear brake cylinder when there is a brake fluid leak and when the piston(s) in the brake cylinder "sticks", as a result of which one or both pistons stop moving in the cylinder.
To perform repair work on replacing the rear brake cylinder, you will need a special key for the working cylinder nipples and brake pipes.
Removal
1. Remove the brake pads (see "Rear brake pads - removal, installation, replacement").
2. Remove the protective rubber cap from the bleed nipple of the working brake cylinder and use a special key or an 8 mm open-end wrench (a socket wrench of the same size will also work) completely unscrew the bleed nipple.
We treat the brake pipe nipple with WD-40 penetrating lubricant.
Warning: When performing the following work, make sure that when unscrewing the bleed nipple, the brake pipe does not rotate with it. If the brake pipe is "stuck" in the nipple, replace it.
3. Using a special key, loosen the brake pipe fitting.
4. Finally, unscrew the brake pipe nipple using a 10 mm open-end wrench.
5. Using a 10 mm wrench, unscrew the two bolts securing the rear brake cylinder.
6. To prevent brake fluid from leaking out of the brake pipe, put a rubber cap on the bleed nipple.
7. Remove the brake cylinder from the rear wheel shield.
Installation
1. We clean the brake mechanism parts from dirt and rust, degrease the working surface of the brake drum, and remove minor oiling of the brake shoe linings using sandpaper.
2. Install a new brake cylinder on the car in the reverse order.
3. Install the brake pads and brake drum (see "Rear brake pads - removal, installation, replacement") and (see "Brake drum - removal and installation")
4. Remove air from the brake system (see "Bleeding brakes (brake system), brake fluid replacement").
5. Adjust the handbrake (see "Checking and adjusting the handbrake").