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ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 i. If  original  shim  thickness  is  not  known  or  if  fuel  pump  is  being  replaced,  fuel  pump  must  be  timed.    Refer  to paragraph 3-14. j. Gently insert fuel pump and shims into crankcase.  Ensure that fuel pump rack engages with slot in governor rack CAUTION If fuel pump is not turned counterclockwise or moves before tightening, it is possible that engine will not stop when required. k. Carefully turn fuel pump counterclockwise until pump rack is felt against stop. I. Holding pump in this position, install damp (2) and secure with nut (1) (beveled face towards clamp) finger tight. m. Tighten nut to 25 ft-lbs (33.9 Nm). n. Install fuel injector pipe between pump (5) and fuel injector.  Refer to paragraph 3-18. o. Connect fuel supply line (11) to fuel injection pump using damp (4). p. Remove rack setting gage. q. Connect governor lever to rack spring (15, FIGURE 3-19). r. Install gear end cover.  Refer to paragraph 3-28.3. 3-14.  FUEL INJECTION PUMP TIMING. WARNING Cleaning  solvent  Is  flammable  and  toxic  to  eyes,  skin,  and  respiratory  tract.    Skin/eye  protection required.  Avoid repeated/prolonged contact.  Good general ventilation Is normally adequate. Each fuel injection pump is timed individually during assembly at factory and when an existing or new fuel injection pump is installed, it is only necessary to reinstall existing shim pack or a new pack of same thickness as original.  This procedure is necessary only if original shims have been lost or mixed with those of another pump.  Use care to avoid dirt entering into engine during fuel injection pump timing procedure.  If practical, start with a thorough cleaning.  Use dry cleaning solvent (P-D-680) to remove all external dirt.  For each fuel injection pump to be timed, repeat following procedure. a. Remove cylinder head cover and fuel injector.  Refer to paragraphs 3-25.1 and 3-17.1. b. Turn engine over manually to establish TDC between compression and power strokes for cylinder being timed. Normal  engine  direction  of  rotation  is  clockwise  as  viewed  from  the  fan  end.    Correct  top  center  occurs approximately 140 degrees of crankshaft rotation after intake valve closes. c. Remove intake valve rocker lever nut and rocker lever.  Refer to paragraph 3-26.1. WARNING Do  not  stand  over  valve  springs  when  depressing  valves.    Failure  to  observe  this  warning  could result in personal Injury. d. Using valve spring tool, depress intake valve until it contacts the piston crown (approximately 0.051 to 0.059 inches [1.3 to 1.5 mm]).  Then remove collets, carrier, and spring from intake valve. NOTE If  valve  can  be  depressed  more  than  approximately  0.25  in.    (6.35  mm),  piston  is  not  in  correct position.    Engine  should  be  rotated  to  correct  position  to  avoid  possibility  of  dropping  valve  into cylinder once carrier and spring are removed. e. Valve can now be depressed until head of valve rests on top of piston.  Refer to FIGURE 3-10. 3-23


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