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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.
WHAT IS THE CORRECT PRESSURE? The first place to look for the correct air pressure for your specific tires is your vehicle ownerâs manual. Correct air pressure should also be listed on the tire placard attached to the vehicle door edge, doorpost, glove box door or fuel door. You may use the tool above to view the manufacturer recommended inflations for standard sized tires on your vehicle.