TM 10-3930-659-34 4-23.  FUEL INJECTION NOZZLE REPLACEMENT. This task covers: a. Removal c. Installation b. Testing and Adjustment INITIAL SETUP: Equipment Conditions: Materials/Parts: • Leak-off tubes and fuel lines removed (see para- • Scrub brush (Item 5, Appendix B) graph 4-22). • Carbon removing compound (Item 10, Appendix B) • Diesel fuel (Item 28, Appendix B) Tools/Test Equipment: • Rags (Item 43, Appendix B) • General mechanic's tool kit (Item 71, Appendix E) • One preformed packing • Fuel injection nozzle puller (Item 48, Appendix E) • Torque wrench, 0-300 lb.-in.  (Item 80, Appendix E)   References: • Torque wrench, 0-175 Ib.-ft.  (Item 81, Appendix E)   • TM 9-4910-409-12 General Safety Instructions: • DO NOT perform this procedure near fire, flames, or sparks. • Carbon removing compound can cause serious burns and blindness.  Use only with protective clothing. WARNING Diesel  fuel  is  combustible.    DO  NOT smoke  or  allow  open  flame  near  fuel injection   nozzles.   Failure   to    follow this   warning   will   result   in   death   or serious   injury   to   personnel.      If   you are   burned,  immediately  seek  medical aid. NOTE All    six    fuel    injection    nozzles    are removed, tested, adjusted, and installed    the    same    way.    One    fuel injection nozzle is illustrated. a.  REMOVAL 1.    Using  a  clean  rag,  clean  area  around  cylinder head (4) and fuel injection nozzle (1). 2.    Remove tee (2) from fuel injection nozzle (1). 3.    Remove screw (3) from fuel injection nozzle (1) and cylinder head (4). 4.    Using  fuel  injection  nozzle  puller,  remove  fuel injection  nozzle  (1)  and  preformed  packing  (5) from   cylinder   head   (4).      Discard   preformed packing. 4-89