Leakage Test Under Pressure

Leakage Test Under Pressure

Special tools, testers and auxiliary items required

• Brake Pressure Gauge 0-250 bar (V.A.G 1310 A)

• Adapter M10 (V.A.G 1310/6)

Test Prerequisites

The brake system (hydraulic unit, brake hoses, brake lines and brake calipers) is operating properly and free of leaks.

- Remove the bleed valve at one of the front brake calipers. Connect the brake pressure gauge 0-250 bar (V.A.G 1310 A) and bleed.

- Apply pressure to the brake pedal until the gauge indicates a pressure of 50 bar. The pressure must not drop by more than 4 bar during the test period of 45 seconds. Replace the master cylinder if pressure drops greatly.