Hydraulic System: Testing and Inspection

Pressure leak test
Special tools and equipment





^ VAG 1310 A Brake pressure gauge

Requirements
^ Brake system (hydraulic unit, brake hoses, brake lines and brake calipers) must function properly and not leak.

^ Remove bleeder screw at one of the front brake calipers. Connect pressure gauge from VAG 1310 and bleed.
^ Apply pressure to brake pedal until gauge indicates pressure of 50 bar (725 psi) and hold for at least 45 seconds.
- Pressure must not drop by more than 4 bar (58 psi) during the test

^ If pressure drops more than specified, replace master cylinder.