TM 9-2320-209-20-3-1 2-6. CRANKCASE BREATHER TUBE REMOVAL AND REPLACEMENT. TOOLS : 7/16-inch combination box and 6-inch extension open end box wrench Ratchet 3/4-inch combination box and Flat-tip screwdriver open end box wrench 7/16-inch open end wrench 3/4-inch open end wrench 9/16-inch socket wrench SUPPLIES : None PERSONNEL: One 5/8-inch open end wrench (2) 1 3/16-inch open end wrench 3/8-inch open end wrench EQUIPMENT CONDITION : Truck parked, engine Preliminary Procedure. Open hood and right TM 9-2320-209-10. b. Removal. off and cool, handbrake set. side panel. Refer to (1) Breather tube (trucks with engines LD 465-1 and LD 465-lC) . FRAME 1 1. Using 5/8-inch open end wrench and 3/4-inch combination box and open end box wrench, hold adapter fitting (1) and unscrew and take off tube nut (2) . Unscrew and take off adapter fitting. 2. Using 7/16-inch wrenches, unscrew and take off capscrew (3) and nut (4) . Spread open and take off clamp (5) . 3. Using screwdriver, loosen two hose clamps (6). Pull off hose (7) with crank- case breather tube (8) from breather tube adapter (9) . 4. Take off two hose clamps (6) and hose (7) from crankcase breather tube (8) . END OF TASK 2-19