Disc Brake 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 bleed screw at one of the front brake calipers. Connect pressure gauge from VAG 1310 and bleed.
- Apply pressure to brake pedal until the gauge indicates a pressure of 50 bar (725.2 psi). The pressure must not drop by more than 4 bar (58 psi) during the test period of 45 seconds. Replace master cylinder if pressure drops greatly.