TM 9-2320-209-20-3-4 c. Replacement. FRAME 1 NOTE Bushings may be used instead of coupling nuts (1). 1. Screw on and finger tighten four coupling nuts (1) onto four hydraulic line hose nuts (2). If using bushings, finger tighten four hydraulic line hose nuts into bushings. NOTE If using old hydraulic lines (3), tighten coupling nuts (1) 1/8 turn. If using new hydraulic lines, do not tighten coupling nuts more than two turns. 2. Using 1 3/8-inch wrenches, hold four hose nuts (2) and tighten four coupling nuts (1). If using bushings, using 1 3/8-inch wrenches, hold bushings and tighten four hose nuts into bushings. GO TO FRAME 2 19-117