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Brake Pressure Regulator: Vanagon

  1. Raise and support vehicle. Attach Pressure Gauges (US 1016) to left front brake caliper and right rear brake cylinder. Bleed pressure gauge and hoses through valve on gauges.
  2. Pump brake pedal several times. Remove nuts holding pressure regulator. Press on brake pedal until reading on both gauges is 725 psi (51 kg/cm2 ).
  3. Tilt regulator forward 30 degrees. DO NOT damage brake lines when tilting regulator. Increase pressure on brake pedal until reading on gauge connected to front caliper reads 1450 psi (102 kg/cm2 ).
  4. With regulator tilted forward 30 degrees and gauge for front caliper reading 1450 psi (102 kg/cm2 ), reading on gauge connected to rear brake cylinder must be 798-943 psi (56-66 kg/cm2 ). If reading is not within specified range, replace pressure regulator. Disconnect gauges and bleed brakes. When installing pressure regulator, ensure bolt heads face in forward (driving) direction.
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