TM 9-2320-209-20-3-4 FRAME 2 1. Drain hydraulic oil reservoir. Refer to LO 9-2320-209-12/1. 2. Working under truck, put 1-gallon container under hose coupling nut (1). 3. Using 1 3/8-inch wrenches, hold four hose nuts (2). Using 1 1/4-inch wrench, unscrew four coupling nuts (1). Let hydraulic lines (3) drain into container. 4. Put hydraulic fluid in approved disposal area. GO TO FRAME 3 19-115