TM 9-2320-209-20-3-3 18-84. OUTRIGGER HYDRAULIC LINES AND FITTINGS REMOVAL AND REPLACE- MENT (TRUCK M764) . TOOLS : 9/16-inch box wrench 9/16-inch open end wrench (2) 11/16-inch open end wrench 5/8-inch open end wrench 7/8-inch open end wrench Diagonal cutting pliers 1-inch wrench (2) SUPPLIES: Plastic tiedown straps (5) PERSONNEL: One EQUIPMENT CONDITION : Truck parked, engine off, handbrake set. a. Preliminary Procedure. Drain hydraulic tank. Refer to LO 9-2320-209-12/1. 18-443