Disassembling and assembling the rear brake pressure regulator (VAZ-21051)

1. Using key A.56124, unscrew the plug, remove gasket 5 (see Fig. Rear brake pressure regulator in idle position), remove piston 10, spacer sleeve 2, seal 7, plate 8, spring 9 and thrust washer with sealing ring 3.

2. When assembling, which is carried out in the reverse order, lubricate all parts with brake fluid.

Checking the details

1. Wash the parts with alcohol or brake fluid and inspect. The surfaces of the parts should not have any scratches or roughness.

2. Check the condition and elasticity of the spring, the length of which in a free state should be 17.8 mm, and under a load of 68.5±7.8–3.9N (7±0.8–0.4 kgf) – 9 mm.

3. Replace damaged parts, as well as the seal and O-ring.