TM   10-3930-643-20 ENGINE, FUEL, EXHAUST AND COOLING TROUBLESHOOTING AND MAINTENANCE. 4-31. Water   Pump   Assembly.   (Sheet   1   of   4) This   task   covers: a.   Removal b . Cleaning/Inspection c .    I n s t a l l a t i on INITIAL  SETUP Tools Materials/Parts Tool  Kit,  General  Mechanic’s Cleaning   solvent   P-D-680 Automotive (App.   C,   Item   2) NSN   5180-00-177-7033 Clean   cloth   (App.   C,   Item   10) Gasket Torques Except   for   special   torques   shown, all   fasteners   are   tightened   to   a standard   torque. Refer   to Appendix  E. EQUIPMENT  CONDITION References Condition   Description Paragraph   4-28 Fan,   guard,   housing   and   supports removed. Paragraph   4-33 Drive   belts   removed. Paragraph  4-32 Fan   clutch   removed. Paragraph   4-27 Cooling   system   drained. Go  to  sheet  2 4-133