This equipment is an Air Leak Tester on the Vehicle Engine Cylinder Block. It detects leakage on the Oil Way & Water Jacket of the Cylinder Block and uses a measuring instrument using the pressure differentiation detection method to set leakage amount to decide on OK/NG. The Oil Way detection and Water Jacket detection is done separately, and the Cylinder Block is Transferred. Upon NG, leakage area is confirmed by sight through submergence test, and is separately discharged through the Repair Line. 
Detection level is ±5% of Reading ±1pa.