Leakage Test
- If leakage is suspected in pressure regulator, connect Pressure Gauges (US 1016) to left front caliper and right rear wheel cylinder. Bleed pressure gauges and hoses through bleeders on gauges. Pump brake pedal until pressure at front caliper reaches 1450 psi (100 bar).
- Hold pressure for 5 seconds. If rear pressure reading changes by more than 145 psi (10 bar) during 5 seconds that pedal is held, pressure regulator is defective. Replace regulator. Remove gauges and bleed brake system.