TM 9-2320-209-20-3-1 (2) Fuel hoses. NOTE Fuel return hose from secondary and final filter assemblies to return tube on trucks with LD- 465 engine is used for this typical procedure. FRAME 1 1. 2. GO Open hood and left side panel. Refer to TM 9-2320-209-10. Using 9/16-inch open end wrench, hold elbow (1) . Using 11/16-inch combination box and open end box wrench, unscrew and take off hose nut (2). TO FRAME 2 TA 087072 4-11