ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-24 3-43 (2) Position new fuel filter element (2) on fuel filter base (9) using a slight rocking motion.  Insure that fuel filter element is properly indexed on fuel filter base.   (3) Position retaining ring (1) on fuel filter base (9) and tighten about 1/3 turn until retaining ring "snaps" into detent.  Do not overtighten retaining ring. (4) Bleed fuel system, refer to paragraph 3.12.1. 3.12.3.   FUEL TRANSFER SUPPLY PUMP. a.   Test, on Engine. CAUTION Dirt in the fuel system can damage components or cause poor engine performance.  Always thoroughly clean the area around connection before disconnecting.  Always cover all openings after disconnecting.  Failure to comply can cause damage to components or poor engine performance. (1) Thoroughly clean outside surface of fuel filter and surrounding area. __________ WARNING Diesel and JP fuels are flammable and toxic to eyes, skin, and respiratory tract.  Skin and eye protection required.  Avoid repeated/prolonged contact.   Provide adequate ventilation.  Failure to comply could result in serious injury or death. __________ WARNING Escaping diesel or JP fuel under pressure can have sufficient force to penetrate skin.  Before removing plug, be sure to relieve pressure.  Failure to comply could result in serious injury or death. NOTE Catch fuel in suitable container. Dispose of fuel in accordance with local ordinances. (2) Slowly loosen plug (11, Figure 3-15) and allow fuel pressure to dissipate.  Remove plug (11) from fuel filter and install fuel pressure gage. __________ WARNING Operating the generator set with any access door open exposes personnel to high noise levels. Hearing protection must be worn when operating or working near the generator set with any access door open.  Failure to comply can cause hearing damage or loss. (3) Start engine, refer to TM 9-6115-672-14.  Fuel supply pump should maintain positive minimum pressure of 2-4 psi (15-30 kPa).