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The cut-out pressure should be in accordance with the pressure setting of the piece number being used. (Common cut-out pressures are between 105-125 psi.) With the engine still running, make a series of brake applications to reduce the air pressure and observe at what pressure the governor cuts-in the compressor.
Bleeding 1 - The first stage is to bleed the brakes in the normal way until the old fluid (or air) is flushed out. On completion there should be pressure at the lever and brake operation should feel normal. 2 - Next we need to bleed the ABS portion of the system. That is done by opening and closing the solenoids in the ABS modulator.