Checking and adjusting the pressure regulator must be carried out on an equipped vehicle, standing on wheels, with a full fuel tank. In this case, the assistant must take the driver's seat.
«live» several times the rear suspension.
Disconnect the hoses from the brake mechanisms of the left front and right rear wheels. Unscrew the fittings for bleeding the hydraulic drive of the brakes from the wheel cylinders and screw in the fittings of the hoses of the control pressure gauges instead.
Purge air from both gauges.
Pressing the brake pedal, measure the pressure in the wheel cylinders using pressure gauges, the values of which must correspond to those indicated in subsection «Design and specifications».
Adjust the spring tension of the pressure regulator depending on the measurement results: with increased pressure in the rear wheel brake mechanism, loosen the spring, and vice versa.
If the measured pressure in the rear wheel brake mechanism is not within the specified limits, replace the pressure regulator.
Disconnect control pressure gauges, bleed air from hydraulic brake system.
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