TM 5-3825-226-24 22. Turn the crankshaft, slow, in a counterclockwise direction.  Do this until the flow of fuel from the end  of  tube  assembly  (9)  is  12  to  18  drops  per minute. 23. Stop rotation of the crankshaft when the flow of fuel   is   12   to   18   drops   per   minute.      Take   a reading  of  the  measurement  on  dial  indicator (3). 24. To  check  for  correct  timing  of  the  fuel  system, make   a   comparison   of   the   reading   on   dial indicator  (3)  with  the  correct  measurement  in the  chart.    Timing  must  be  set  within  ±   1  of correct timing angle. TIMING ANGLE INDICATOR READING 16° .127 in. 3.23 mm NOTE If  the  timing  of  the  fuel  system  is different    than    the    correct    timing dimension given in the chart, see the subject CHECKING TIMING BY TIMING PIN METHOD. Checking    Automatic    Timing    Advance    Unit    By Timing Light Method Tools Needed: 1P3500 Injection Timing Group or 2P8280 Injection Timing Group Either group can be used to check the automatic timing advance. 1P3500 INJECTION TIMING GROUP NOTE When either of these injection timing groups   is   used,   the   cap   from   the 9N3979   Nozzle   Assembly   must   be removed.      This   will   let   fuel   bleed from  the  cap  end  of  the  nozzle,  and will   maintain   line   pressure   in   the normal range. CAUTION Do not use the engine in service with the   cap   removed   from   the   nozzle. The fuel will drain into the crankcase and   the   result   will   be   thin   oil   (oil dilution).    Also  a  new  1H1023  Seal must    be    used    when    the    cap    is installed. FUEL SETTING Tools Needed: 5P4203 Field Service Tool Group The procedure that follows for fuel setting can be done with the housing for the fuel injection pumps either on or off the engine. REMOVAL OF COVER 1.  Shut-off solenoid.  2.  Cover. CAUTION Before  any  service  work  is  done  on this  fuel  system,  the  outside  of  the housing for the fuel injection pumps and all parts connected to it must be especially clean. 1. Remove shut-off solenoid (1) and cover (2). 2. Put the 5P298 Zero Set Pin (5), with 17.8507 on it, in the pump housing. INSTALLATION OF COVER 3.  5P4226 Adapter.  4.  3J6956 Spring.  5.  5P298 Zero Set Pin, with 17.8507 on It. 2-53