Quantcast Pressure Check Cylinder Head (cont)

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TM  9-2815-202-34 (3) Using cylinder head pressure testing kit, install fabricated blocking plates (66) and rubber gaskets to seal ten water holes on fire deck. Secure with bolts, flat washers, and nuts from kit. Torque bolts to 50-60 Ib-ft  (71-47  N-m). (4) Using cylinder head pressure testing kit, install fabricated end plate (67) and gasket over hole in front of cylinder head. Secure with bolts from kit. Torque bolts to 30-35 Ib-ft  (41-47  N-m). (5) Attach a regulated air supply to end of plate (67) and gradually apply pressure of 40 psi (276 kPa.1 ) to water jacket. (6) Immerse cylinder head in a tank of water heated to  180oF-200oF (82oC-93oC) for twenty minutes to heat head. Observe water in tank for bubbles which indicate a leak or crack. Check for leaks at top and bottom of injector tubes, oil gallery, exhaust ports, fuel galleries, and at top and bottom of cylinder head. (7) Relieve air pressure and remove regulated air supply, injectors, end plate, and blocking plates from cylinder head. C  h  a  n  g  e       1 5-43


 


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