TM 9-2320-209-20-3-3 18-85. OUTRIGGER HYDRAULIC PUMP REMOVAL AND REPLACEMENT (TRUCK M764) . TOOLS : 1-inch wrench 9/16-inch wrench (2) 3/32-inch sockethead key (Allen wrench or equivalent) 14-inch pipe wrench 7/8-inch wrench SUPPLIES: Clean 5-gallon container Lubricating oil, OE/HDO 10, MIL-L-2104 Caps PERSONNEL : One EQUIPMENT CONDITION : Truck parked, engine off, handbrake set. a. Removal. FRAME 1 1. 2. 3. 4. Using 9/16-inch wrench, unscrew and take off cap screw and nut (1) that join hydraulic tank fitting shield (2) to body cross sill (3). Loosen other capscrew (4) and turn shield out from under drain plug (5). Using 9/16-inch wrench, unscrew and take off drain plug (5) and let oil drain into clean container. CAUTION Do not reuse drained oil if water or dirt is in it. Tell direct support maintenance about any water or dirt in oil. After oil is drained, using 9/16-inch wrench, screw in and tighten drain plug (5). Slide shield (2) under plug. Aline holes in shield with holes in cross sill (3). Using 9/16-inch wrenches, screw in and tighten capscrew and nut (1) and tighten capscrew (4). GO TO FRAME 2 18-459