(11  )  Drive  shaft.  Inspect  the  shaft  for  undue wear  or  cracking.  Check  the  shaft  diameter  where the   governor   thrust   sleeve   (117)   slides   for   scoring. The   drive   shaft   seal   grooves   must   be   absolutely smooth   for   the   seals   to   function   properly.   Check for  alignment  of  timing  roll  pin  on  splined  drive shafts. (12) End plate. Check  the  regulating  piston  (55) for   freedom   of   movement   in   the   sleeve   (49).   Check all   threads   for   damage. The  inlet  screen  (51  )  must be   inspected   for   damage.   All   dirt   or   rust   must   be removed   from   the   screen.   Do   not   attempt   to   re- move   liner-locating   pin   unless   obviously   damaged. (13)   Governor   arm   damper.   Check   the   governor arm   damper   assembly   for   free   movement   of   the   pis- ton  (87)  within  the  barrel  (88  ).  Inspect  for  chipping of  the  piston  and  for  scratches  on  the  piston  or barrel   inside   diameter. The  bleed  orifice  in  the barrel  should  permit  free  fuel  flow  when  the  piston is   inserted. Replace   individual   components   as   nec- essary. b.  Repair. — (1)  Replace  transfer  pump  blades  (67-70)  if  de- fective.   Always   replace   both   blades   if   one   is   defec- tive. (2)  Replace  all  parts  worn  beyond  allowable limits  or  found  to  be  defective  during  inspection. (3)  During  rebuild  of  pump,  replace  all  springs, plungers,   pistons,   metering   valve,   vent   wire,   and cam   roller   and   shoes,   only   if   damaged. 14-45.   Fuel   Injection   Pump   Reassembly   and   Adjust- ment.  Reassemble  the  fuel  pump  in  the  reverse order  of  the  numerical  sequence  in  figure  14-21  pay- ing   particular   attention   to   the   following. a.  All  parts  must  be  thoroughly  flushed  in  clean oil  aS they   are   being   reassembled.   Cleanliness   is most   important. All  seals  and  gaskets  must  be  re- placed,   whether   visibly   damaged   or   not. CAUTION Install   piston   seal   dry   -   do   not   use grease   on   the   seal. b.   Insert   regulating   piston   seal   (56)   into   the   lower end  of  the  regulating  sleeve  assembly  (57),  far  enough to  expose  retaining  ring  groove.  Install  retaining ring  (53). c.   Rinse   in   clean   oil   and   install   regulating   piston (55)  and  spring  (54)  into  the  sleeve,  making  sure that  the  piston  slides  to  the  bottom  of  the  sleeve  bore without  binding. CAUTION Check   for   tightness   of   the   orifice   plate and  replace  adjusting  plug  if  plate is  found  loose. d.  Install  end  plate  adjusting  plug  (48),  turning  in until  all  threads  are  just  below  port  “A”. e.   Insert   regulating   sleeve   assembly   (57)   into   its bore  in  the  end  plate  (59). f.  Fit  the  transfer  pump  thrust  disk  (63)  to  the end-plate   (59).   The   thrust   disk   may   be   reversed   if one   side   appears   worn   or   scratched. A   small amount  of  grease  will  hold  the  disk  in  position  during assembly. g.   Flush   distributor   rotor   (142)   in   clean   oil   and assemble  to  the  bore  of  the  head  with  a  slight  rotary motion.   Do   not   use   force.   Binding   or   stickiness indicates   dirt. Remove   rotor   and   rinse   once   more. h.   Flush   the   hydraulic   head   (144)   and   distributor rotor  (142)  thoroughly  in  clean  oil  and  assemble, while   immersed   in   oil,   with   a   slight   rotary   motion. Under  no  circumstances  should  any  force  be  used. Do  not  handle  the  rotor  shank  with  the  fingers. i.   Place   the   hydraulic   head   and   rotor   assembly (143   in   the   holding   fixture.   Insert   the   plungers (133,  134)  and  the  leaf  springs  (127,  128).  Insert the  rollers  and  shoes  and  check  for  freedom  of movement. j   .   Install   the   centrality   gauge,   placing   the   in- dicator  pin  in  the  metering  valve  bore  and  securing with   a   head   locking   screw.   Use   a   connector   screw washer  under  the  head  of  the  screw. Loosen  the dial   indicator   retaining   screw   and   slide   the   indicator to   its   outer   limit.   Install   head   fitting   hand   tight   and connect   to   a   supply   of   clean,   filtered,   compressed air.  Regulate  the  air  pressure  to  40-100  psi. k.  The  correct  roller-to-roller  dimension  is 1.977  ±  .0005”. Set  both  sets  of  rollers  (129,  130) as  required  adjusting  each  leaf  spring  (127,  128)  alter- nately.  Since  each  roller  shoe  (131,  132)  for  a  given  cyl- inder  is  controlled  by  a  separate  leaf  spring,  it  may  be necessary   to   invert   or   interchange   leaf   springs   to   ob- tain   correct   dimensions   on   both   sets   of   rollers.   Roller settings  of  both  cylinders  must  be  within  .003”  of  each other. 1.   Check   centrality   of   the   rollers   (to   assure   that each  one  starts  its  pumping  stroke  at  the  same  time) as  follows  a)  Rotate  distributor  rotor  until  one roller  is  aligned  with  dial  indicator  plunger.  Slide indicator   inward   until   plunger   depresses   at   least .010”.   Lock   indicator   retaining   screw.   “Zero”   in- dicator  on  high  point  of  roller  by  rotating  knurled dial.   b)   Rotate   distributor   rotor   (either   direction) until   the   next   roller   depresses   dial   indicator   plunger. Allowable   centrality   is   +   .002”   (total   .004   “).   Before — 14-48