Mechanic 50 Test Questions And Answers

Rear brake interlock systems use ________ air pressure to apply the rear brakes. A. Regulated B. Full System - ️️A. Regulated When air pressure in the coach reservoirs reach the cut-out setting of the compressor, the ________ pistons are lifted off their seats and compression stops. A. Discharge B. Unloader - ️️B. Unloader The ________ controls the output of the air compressor. A. Governor B. Pressure Regulator Valve C. Pressure Protection Valve D. All of the Above - ️️A. Governor Excessive oil in a coach air system is usually caused by____ A. Worn compressor discharge B. Worn air compressor piston rings C. Internal engine oil leaks D. None of the above - ️️B. Worn air compressor piston rings Flare type fittings are acceptable for use on coach air brake systems. A. True B. False - ️️B. False