Hydraulic System: Testing and Inspection

Pressure leak test

Special tools and equipment





^ VAG1310 A Brake system test unit

Test prerequisites:
Function and proper seal of brake system (hydraulic unit, brake hoses, brake lines and brake calipers).
^ Remove bleed screw at one of the front brake calipers. Connect pressure gauge from VAG1310 and bleed.
^ Apply pressure to 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. If pressure drops greatly replace master cylinder.