High Pressure Testing

• Brake system (brake master cylinder, brake hoses, brake lines and brake calipers) tested for function and leaks.

-- Remove bleed screw at one of the front brake calipers. Connect the :VAG1310A  and bleed.

-- Insert the :VAG1869/2  between the brake pedal and driver seat. Apply pressure to brake pedal until the gauge indicates a pressure of 50 bar (725 psi). The pressure must not drop by more than 4 bar (58 psi) during the test period of 45 seconds.

Fig 1: Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat

Courtesy of AUDI OF AMERICA, LLC

Replace master cylinder if pressure drops greatly.