Make sure the wheels are chocked before starting any pre or post inspection check.
Air leak Test (Static) Air pressure (120-130 psi), vehicle off , release parking brake, do not touch brake pedal and wait one minute, check air pressure loss is no more than 3 psi
Air leak test (applied) Air pressure must be minimum of 90 psi , engine off, parking brake released, depress and hold brake pedal one minute of air leakage must be not more than 4 psi
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