TM 10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 12-19. Hydraulic Reservoir and Filter. (Sheet 5 of 11) REMOVAL 19. 20. 21. Weight  of  hydraulic  reservoir is  approximately  300  pounds. Use  adequate  hoist  and  sling  for lifting. Failure to follow this procedure  may  cause  damage  to equipment  or  INJURY. If you are injured,    seek medical aid immediately. Using a 14" adjustable wrench, install 3/4-10 NC eyebolt in boss on top  of  hydraulic  reservoir (35). Attach hoist and sling. Using a 3/4" socket, socket wrench handle and a 3/4" box and open end wrench,  remove four nuts (31), washers (32), bolts (33), washers (34) and hydraulic reservoir (35). Remove hoist and sling. DISASSEMBLY 22. Using a 9/16" socket and socket wrench handle, remove six bolts (36), washers (37), items 39 thru 43 as an assembly  and  preformed  packing (38) from hydraulic reservoir (35). Discard  preformed  packing  (38). 23. Using snap ring pliers, remove cap (39), gasket (40), retaining ring (41) and filter (42) from filler neck (43). Discard gasket (40). Go to sheet 6 12-174