REPLACE FUEL INJECTOR FUEL RETURN HOSE

TM-9-2350-256-20 Carrier Cargo Tracked 6-Ton M548A1 (2350-01-096-9356) M548A3 2350-01-369-6081 Manual
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CHAPTER 4: MAINTENANCE OF MAIN ENGINE FUEL, AIR INTAKE, TM 9-2350-256-20 AND EXHAUST SYSTEMS 4— 6 REPLACE FUEL INJECTOR FUEL RETURN HOSE THIS TASK COVERS a. Removal b. Installation INITIAL SET-UP Tools: Parts: Equipment Conditions: • Tool kit, general mechanic's • Lockwasher (Appendix G, • Engine right and left upper (Appendix C, item 53) item 122) covers removed (see • Pliers, retaining ring, external • Nuts, self-locking (3) paragraph 4-2) (Appendix C, item 32) (Appendix G, item 165) • Engine cooling fan shroud and related parts removed (see paragraph 5-4) WARNING Do not smoke or use open flame when working on fuel system: explosion may occur, causing severe injury or death. a. REMOVAL 1 Remove 10 hose assemblies (1) by loosening coupling nut at each end of hose assembly. 2 Remove two hose assemblies (2) by loosening coupling nut at each end of hose assembly. 3 Remove hose assembly (3) by loosening coupling nut at each end of hose assembly. 4 Remove 12 multiple connectors (4) by removing 12 fluid passage bolts (5) and 24 flat washers (6). 5 Remove tube assembly (7) and tube elbow (8) by loosening coupling nut at each end of tube assembly and removing two clamps (9). 6 Remove tube assembly (10) and tube elbow (11) by loosening coupling nut at each end of tube assembly and removing two clamps (12). 7 Remove hose assembly (13) by loosening coupling nut at each end of hose assembly. 8 Remove grommet (14) and two elbows (15). 9 Remove hose assembly (16) by loosening coupling nut at each end of hose assembly. 10 Remove retaining ring (17), nut (18), clinch sleeve (19), and sealing plug (20). 11 Remove tube cross (21), flat washer (22), and nut (23). 12 Remove three loop clamps (24) by removing three self-locking nuts (25) and three screws (26). 13 Remove hose assembly (27) by loosening coupling nut at each end and removing nut (28), lockwasher (29), and flat washer (30). 14 Remove hose assembly (31) by loosening coupling nut at each end and removing elbow (32) and check valve (33) from one end, and tee (34) from other end. 4— 14

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