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Home >> Volkswagen >> 1985 >> GTI HT >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Adjustments >> Brake Pressure Regulator >> All Other Models

All Other Models

  1. Bounce vehicle several times and allow it to settle normally. Measure distance from top of wheel rim to lower edge of fender lip (both sides) with 165 lbs. in driver's seat, fuel tank full and tires on ground. Attach spring tensioners on each side to hold axle in measured position.
  2. Raise vehicle and support securely. Check measurement and adjust tensioners if necessary. Connect Pressure Gauge (US 1016) to left front caliper and right rear caliper or wheel cylinder in place of bleeder valves. Bleed hoses and gauges through bleeder valve on gauges.
  3. Pump pedal several times. Depress brake pedal until front gauge shows pressure given for first reading in BRAKE PRESSURE  chart. Record rear gauge reading. Increase pedal pressure until front gauge shows pressure given for second reading in BRAKE PRESSURE  chart. Record rear gauge reading.
  4. If pressure reading at rear gauge is too high, loosen clamp bolt and reduce spring tension. Increase spring tension if pressure reading at rear gauge is too low. Regulator must be replaced if pressures cannot be corrected by spring adjustment. Bleed hydraulic system after disconnecting gauges.
NOTE: DO NOT adjust spring tension while pressure is applied on brake pedal.