TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
Page 393 of 670
TM 9-2815-202-34 b. Installation (1) Affix seal ring (7) to back of water pump (5). (2) Install water pump (5), alining gear teeth with drive gear in engine front cover (6). (3) Install bolt (1), two bolts (2), three Iockwashers (3), and flat washer (4) securing water pump (5) to front cover (6). Torque bolts to 46-50 Ib-ft (62-68 N-m). c. Gear Backlash Adjustment (1) (2) (3) Remove five bolts (8), pump cover (9), and gasket (10) from water pump (5). Check gear backlash by installing a bolt or equivalent in impeller puller hole. Measure backlash with a dial indicator at this point. Backlash setting should be between 0.001 and 0.006 inch. If setting is not correct, loosen bolts (1 and 2) and pivot water pump until properly set. Retorque bolts (1 and 2). Install gasket (10), pump cover (9) and five bolts (8) to water pump (5). Torque bolts to 13-17 Ib-ft (1 8-23 N-m). END OF TASK FOLLOW-ON MAINTENANCE Para Description 5-6 Install water manifold tube assembly (7083-7396 and 7083-7399) 5.1-6 Install water manifold tube assembly (7083-7391 ) 3-6 Install water outlet 5-8. 5-9. 5-10. 5-11. 5-12. 5-13. AIR BOX HEATER REPLACEMENT (See Para 4-10) ENGINE ROCKER ARM COVER AND CRANKCASE (See Para 4-11) BREATHER REPLACEMENT FUEL PUMP REPLACEMENT (See Para 4-12) AIR INLET HOUSING REPLACEMENT (See Para 4-13) TACHOMETER DRIVE REPLACEMENT (See Para 4-14) BLOCK MOUNTED CRANKCASE BREATHER REPLACEMENT (See Para 4-15) Change 1 5-15