TM 9-2320-209-20-3-1 FRAME 8 I 1. Join fuel return tube (1) to elbow (2) on fuel return solenoid valve (3). Using 7/16-inch open end wrench, tighten coupling nut (4). 2. Join fuel supply tube (5) to union (6). Using 3/8-inch open end wrenches, tighten coupling nut ( 7). GO TO FRAME 9 TA 087572 4-118