ARMY TM 9-6115-670-14&P 4-74 4.31.  FUEL PUMP ASSEMBLY. This task covers: a.  Test b.  Replace INITIAL SETUP Tools General Mechanic's Tool Kit (Item 1, Appendix B) Hand Siphon (Item 22, Appendix B) Gloves, Chemical and Oil Protective (Item 34, Appendix B) Equipment Conditions MASTER ON-OFF switch on APU control unit set to OFF. Engine stopped and allowed to cool completely. Materials/Parts Fuel Pump Assembly TEST a.  Cut wire ties (if applicable). b.  Loosen clamp (6, Figure 4-18) and remove fuel line (7) from fittings (5) on fuel pump assembly (4). c.  Attach one end of a suitable hose to outlet side of fuel pump assembly and place other end in a container approved to hold diesel fuel. d.  On control panel, position MASTER ON-OFF switch to ON and BATTLE SHORT switch to ON. Fuel pump should immediately pump fuel into container.  If fuel does not pump, replace fuel pump. WARNING Ensure that NO IGNITION SOURCE is within 50 feet of the 10 kW APU. The fuel in this APU is highly flammable.   Do not smoke. Do not splash fuel on hot components.  Failure to heed this warning could result in serious injury to personnel or DEATH. WARNING Avoid  fuel  contact  with  skin.  Wear  protective  gloves, goggles, apron and mask, while disconnecting fuel lines.   Failure to heed this warning could result in serious injury to personnel or DEATH NOTE When  disconnecting  fuel  lines,  a  suitable  container should be used to catch fuel leaking from disconnected fuel lines.