Test Conditions

Test conditions:
Brake system (hydraulic unit, brake hoses, brake lines and brake calipers) operating properly and free of leaks.
- Remove bleeder valve at one front brake caliper. Connect pressure gauge V.A.G 1310 A and bleed.
- Apply pressure to brake pedal until gauge indicates a pressure of 50 bar. The pressure must not drop by more than 4 bar during test period of 45 seconds. Replace master cylinder if pressure drops greatly.