Rear Brake Pressure Regulator — Checking Parts (VAZ-21011)

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 should be:

• in a free state - 17.8 mm,
• under load – 70⁺⁸_–4 H (7^+0,8_–0,4 kgf) – 9 mm.

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

The article is copied from the website VAZbook.ru