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ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 3-13.2.  Inspection. a. Inspect pump housing for cracks, corrosion, or any other damage. b. Inspect shim pack for corrosion or damage. c. Inspect tappet for cracks, corrosion, or any other damage. 3-13.3.  Test. NOTE This test must be performed with engine installed in end item. a. Disconnect fuel injector pipe from top of pump to be tested. b. Connect a fuel pressure gage capable of displaying 3000 psi (20,685 kPa). c. Using end item controls, crank engine and observe pressure gage. d. Pressure  gage  should  read  approximately  3000  psi  (20,685  kPa).    If  reading  is  not  as  specified,  replace  fuel pump. e. Remove pressure gage and connect fuel injector pipe.  Tighten coupling nut to 21.0 ft-lbs (28.5 Nm). 3-13.4.  Installation. a. Remove all caps/covers. b. Before installing fuel injection pump, ensure governor is correctly adjusted.  Refer to paragraph 3-23.5. CAUTION Under   no   circumstances   must   any   attempt   be   made   to   remove   fuel   pump   tappet   stud   from crankcase, to prevent damage to engine block. c. If tappet (7, FIGURE 3-7) and thrust cup (8) were removed, install them as follows: (1) Tappet is installed in crankcase using long nosed pliers held open against top inside edge of tappet recess. (2) Submerge tappet in dean engine lubricating oil (MIL-L-2104). (3) Insert tappet in crankcase with longer slot facing outward to ensure it is correctly located over tappet stud. Refer to FIGURE 3-8.  Install thrust cup (8, FIGURE 3-7). FIGURE 3-8.  Fuel Pump Tappet and Stud 3-21


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