TM 9-2320-361-20 3-26. FUEL PUMP (IN-TANK) MAINTENANCE This task covers: a. Testing Fuel Pump Pressure d. Cleaning and Inspection b. Removal e. Assembly c. Disassembly f. Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All TM 9-2320-361-10 SPECIAL TOOLS Fuel pressure gage, NSN 4910-00-255-8673 MATERIALS/PARTS Nine lockwashers Three gaskets "O" ring Lead seal Locktab Antiseize tape (Appendix C, Item 27) TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). GENERAL SAFETY INSTRUCTIONS Diesel fuel is flammable. Do not perform this procedure near flames. Some vehicles have two separate wires and con- nectors. Connecting wires on wrong terminals may cause fuel to ignite, resulting in injury to personnel. a. Testing Fuel Pump Pressure WARNING Diesel fuel is flammable. Do not perform fuel system procedures near open flame. Injury or death to personnel may result. 1. Disconnect fuel supply tube (3) from fuel pump (4). 2. Connect adapter (1) and fuel pressure gage (2) to fuel pump (4). CAUTION Starting engine may damage fuel pressure gage. 3. Turn accessory switch to ON position (TM 9-2320-361-10) to start fuel pump (4). 4. Read pressure on fuel pressure gage (2). If pressure reads at least 4 psi (27.6 kPa), operation of fuel pump (4) is satisfactory. Turn accessory switch to OFF position (TM 9-2320-361-10) and remove fuel pressure gage (2) and adapter (1) from fuel pump (4). 5. If fuel pressure gage (2) reads no pressure, inspect electrical connections and, if necessary, continue with task b. to replace fuel pump (4). 3-42