CHAPTER 4 FUEL SYSTEM MAINTENANCE

TM 5-3895-373-20 CHAPTER 4 FUEL SYSTEM MAINTENANCE Para Page General Maintenance Procedures...................................................................................................... 4.1 4-1 Repair Fuel Tank ................................................................................................................................ 4.5 4-28 Repair or Replace Fuel Lines, Fittings, and Hoses ............................................................................ 4.7 4-35 Replace Cold Start Induction Heater.................................................................................................. 4.10 4-62 Replace Fuel Filter Assembly............................................................................................................. 4.9 4-53 Replace Fuel Lift Pump ...................................................................................................................... 4.2 4-2 Replace Fuel Shutoff Solenoid........................................................................................................... 4.6 4-31 Replace Fuel/Water Separator........................................................................................................... 4.8 4-47 Replace Induction Heater Relay......................................................................................................... 4.11 4-65 Replace/Repair Air Intake Components ............................................................................................. 4.3 4-7 Replace Throttle Actuator and Throttle Control Cable ....................................................................... 4.12 4-69 Replace Turbosupercharger............................................................................................................... 4.4 4-20 4.1. GENERAL MAINTENANCE PROCEDURES. All unit level maintenance shall be performed in accordance with good and safe shop practices. Observe the following general instructions and requirements when performing fuel system maintenance. a. All areas of the paving machine exposed to paving material require wash down prior to maintenance. Use spray wash down equipment per TM 5389537310. Use hammers, chisels, and scrapers to remove paving material buildup deposits. b. Thread locking compound is used with most threaded fasteners. If a threaded fastener will not break loose, heat threaded area of fastener from 500° to 6000F (2320 to 315°C) with heater gun. If the special solvent used to remove thread locking compound from screw threads fails to remove buildup, discard fastener. c. When removing tie wraps from hoses and wiring, note or mark locations and anchor points. The proper location and installation of tie wraps will prevent undue chafing of hoses and wiring. d. Always tag mating connectors and fittings before disconnecting. Tagging of mating connectors and fittings will ease reassembly and reduce assembly errors. e. Inspect all removed components for obvious wear or damage. Replace all worn, bent, broken, or otherwise damaged parts. f. Inspect all removed components for wear or damage. Replace damaged parts. Replace used lockwashers, self locking nuts, preformed packings, seals, and gaskets. g. Inspect all removed fasteners for thread damage. If thread damage is found, replace fastener. Replace flat washers if galled or bent. Use screw extractor set (Item 15, Appendix E) to remove broken studs or screws. h. Clean painted surfaces thoroughly before repainting. Do not paint over rust or corrosion. Reference TM 430139 for equipment painting requirements. i. Torque values cited in the text apply to modified SAE Grade 8 fasteners at required clamping loads. j. Use only authorized replacement parts. Refer to TM 5-3895-373-24P, Repair Parts and Special Tools List (RPSTL) for authorized replacement parts. k. Observe all warnings and cautions. Wear protective clothing and equipment as specified. Observe the Safety and Hazard Warnings provided in TACOM technical bulletin TB 43-0216. 4-1