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