TM 9-2320-280-20-2 Section II. FUEL SYSTEM MAINTENANCE 3-11.  FUEL  SYSTEM  MAINTENANCE  TASK  SUMMARY TASK PROCEDURES PAGE PARA. NO. 3-12. 3-13. 3-14. 3-15. 3-16. 3-17. 3-18. 3-19. 3-20. 3-21. 3-22. 3-23. 3-24. 3-25. 3-26. 3-27. 3-28. 3-29. 3-30. 3-31. 3-32. 3-33. 3-34. 3-35. 3-36. 3-37. 3-38. 3-39. 3-40. Air Cleaner Assembly and Dust Unloader Maintenance Air Cleaner Filter Element Servicing Air Horn Replacement Air Horn to Air Cleaner Elbow Replacement Air Horn Support Bracket Replacement Air Restriction Gauge Replacement Weathercap Replacement Air Restriction Gauge Hose Replacement Air Intake and Fuel Pump Vent Lines Replacement Drainage Bracket Replacement Fuel Injection Pump Boot Replacement Fuel Pump Replacement Fuel Tank Maintenance Fuel Tank Supply and Return Lines Replacement Auxiliary Fuel Pickup and Return Lines Replacement Fuel Tank Vent Line and Filter Replacement Fuel Tank Filler Cap and Spout Maintenance Fuel Tank Filler Spout Vent Line Replacement Filler Spout Hose Replacement Fuel Tank Hangers Replacement Fuel Filter Maintenance Fuel Filter Element Maintenance Fuel Filter Drain Hose and Valve Replacement Fuel Injection Pump Return Hose Check Valve Maintenance Fuel Injection Return Hoses Replacement Fuel Drain Back Tube Replacement Glow Plug Replacement Right Fuel Injection Lines Bracket Replacement Left Fuel Injection Lines Bracket 3-20 3-22 3-26 3-28 3-29 3-30 3-31 3-32 3-33 3-34 3-35 3-36 3-38 3-48 3-50 3-52 3-54 3-56 3-58 3-59 3-60 3-62 3-64 3-66 3-68 3-72 3-74 3-75 3-76 Replacement 3-19