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.