TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 4-36 CYLINDER BLOCK MAINTENANCE e. Pressure Check (1) (2) (3) With all cylinder block plugs in place, install ten blocking plates (67) and ten gaskets (68), found in cylinder head pressure testing kit, over water outlet holes. Secure plates to top of cylinder block with twenty 5/8-11 x 2 inch bolts (69). Install fabricated water outlet plate (70) and rubber gasket (71). Secure with two bolts (72), two nuts (73), and four Iockwashers (74). Attach an air line connection at plate (70). Immerse block in a tank of water heated to 180 to 200 o F (82-93 o C) for twenty minutes. (Cont.) Never work on air system components without first gradually relieving air pressure. Sudden release of air pressure can throw debris resulting in serious personal injury. (4) Apply 40 psi (276 kPa) air pressure to water jacket and observe water in tank for bubbles which indicate a crack or leak in block. Replace block if cracked. Compressed air used for cleaning purposes will not exceed 30 psi. Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc). (5) After competing pressure test, remove block from water tank. Remove ten blocking plates (67), ten rubber gaskets (68), twenty bolts (69), oil cooler plate (70), gasket (71), two bolts (72), two nuts (73), and four Iockwashers (74). Dry block with compressed air. END OF TASK FOLLOW-ON MAINTENANCE Para Description 3-6 Install oil cooler 4-18 Install blower 4-30 Install front and rear end plates 4-33 Install cylinder kits 4-35 Install crankshaft 4-174