TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l 3-38. FUEL DRAIkBACK TUBE REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) hIaterials/Parts Lockwasher (Appendix G, Item 207) hlanual References TM 9-2320-387-10 TM 9-2320-387-24P Equipment Condition Air horn removed (para. 3-14). General Safety Instructions Do not perform this procedure near fire, flames, or sparks. Maintenance Level Unit WARNING Diesel fuel is highly flammable. Do not perform this procedure near fire, flames, or sparks. Severe injury or death may result. 1 a. Removal 1 1. Cover or plug all hoses and connections immediately after disconnection to prevent contamination. Remove all plugs prior to reconnection. Remove nut (17), lockwasher (181, and engine wiring harness clamp (15) from stud (19). Discard lockwasher (18). 2. Remove stud (191, fuel drain-back tube (51, clamp (201, fuel supply line (14), and clamp (16) from cylinder head (23). 3. Loosen two clamps (10) and disconnect two hoses (11) from fuel drain-back tube (5). 4. Loosen clamp (22) and disconnect fuel return hose (21) from fuel drain-back tube (5). 5. Loosen clamp (4) and disconnect fuel drain-back hose (3) from fuel drain-back tube (5). 6. Remove nut (7), washer (81, clamp (91, and fuel-drain-back tube (5) from valve cover stud (6). 7. Remove capscrew W, washer (241, and clamp (12) from front engine cover (13). . 8. Remove drain-back tube (5). CAUTION -- b. Installation 1. 2. 3. 4. 5. 6. Position fuel drain-back tube (5) in front of injection pump (2). Connect fuel return hose (21) to fuel drain-back tube (5) with clamp (22). Connect two hoses (11) to fuel drain-back tube (5) with two clamps (10). Connect fuel drain-back hose (3) to fuel drain-back tube (5) with clamp (4). Install fuel drain-back tube (5) on valve cover stud (6) with clamp (91, washer (81, and nut (7). Tighten nut (7) to 13-20 lb-ft (18-27 N-m). Install fuel drain-back tube (5) on front engine cover (131with clamp (121,washer (24), and capscrew (1). Tighten capscrew (1) to 40 lb-ft (54 N-m). 7. Install fuel supply line (141, clamp (161, fuel drain-back tube (5), and clamp (20) on cylinder head (23) with stud (19). 8. Install wiring harness clamp (15) on stud (19) with lockwasher (18) and nut (17). 3-76