TM  10-3930-643-34 ENGINE,  FUEL,  EXHAUST  AND  COOLING  TROUBLESHOOTING  AND  MAINTENANCE.  (cont) 4-18. Water Pump Assembly. (Sheet 1 of 5) This task covers: a. Disassembly b. Cleaning/Inspection c.  Assembly INITIAL  SETUP Tools Tool  Kit,  General  Mechanic’s Automotive NSN   5180-00-177-7033 Shop  Equipment,  Automotive Maintenance  and  Repair: Field  Maintenance,  Basic, Less  Power NSN  4910-00-754^-0705 Shop  Equipment,  Automotive Maintenance  and  Repair: Field   Maintenance NSN 4910-00-919-0076 Materials/Parts Cleaning  solvent  P-D-680 (App. C, Item 5) Clean cloth (App. C, Item 24) Lubrication oil (App. C, Item 19) Grease (App. C, Item 9) Seal and boot Water  pump  seal  assembly Front  bearing  grease  seal Rear  bearing  grease  seal Torques Except for special torques shown, all fasteners are tightened to a standard  torque. Refer to Appendix E. EQUIPMENT   DESCRIPTION References Condition  Description TM  10-3930-643-20 Water pump assembly removed. DISASSEMBLY 1. Use puller to engage two 1/2 inch holes in impeller (1). If  impeller (1) is equipped with 1/4 inch holes, enlarge them to accept puller, then remove impeller (1). Go to sheet 2 4-112