coil. This   can   result   in   questionable operation   and   rejection   of   good   coils under   some   conditions.   Do   not   attempt to  check  solenoid  operation  with  the cover   removed   from   the   pump.   The governor   linkage   spring   aids   operation when   the   cover   is   assembled. g.   Reassemble   solenoid. ME 6115-545-34/14-22 Figure   14-22. ThrottIe   Linkage   Adjustment of   the   contact   screws.   Check   the   solenoid   for   a   com- plete   circuit   with   an   ohmmeter. e.   Assemble   the   shut-off   arm   (15)   and   spring   (13) and  guide  (14)  to  the  coil.  Before  installation  of  the solenoid   assembly   to   the   cover   is   made,   adjustment   of the   arm   travel   and   spring   tension   should   be   carried out   as   illustrated   in   figure   14-23.   Install   new   insulating tubes  (11,  12)  to  both  contact  screws.  Insert  the  assem- bly   into   the   governor   control   cover   as   a   unit.   Replace the   insulating   washer   (10)   and   assemble   the   contact nuts   (7,8)   (20-25   inch-pounds).   Mount   the   cover   assem- bly,  with  new  cover  seal  (6),  to  the  pump  and  tighten securely. f.  With  the  pump  mounted  on  the  test  bench,  the electrical  shut-off  device  must  be  checked  with  24  Vdc and  wide  open  throttle  at  the  following  speeds: (1) 400 rpm (2)  Full  load  governed  speed (3) High idle (shut-off only) NOTE If   use   of   automotive   type   batteries   is   im- practical,   a   good,   heavy   duty   battery charger  can  be  used  as  long  as  voltage  can be  selected  and  will  hold  with  minimum drop  (1/2  volt  max.  )  during  application  to the   solenoid   coil. Use   of   small,   inexpen- sive   trickle   chargers   is   not   recommended, since  a  voltage  drop  of  2-3  volts  can  be expected  when  current  is  applied  to  the h.   Install   solenoid   on   fuel   injection   pump. — i.   On   equipment   test. Energize   solenoid   with 24  Vdc.  If  a  clicking  sound  is  heard,  then  the  sole- noid   is   operating. 14-47.   Variable   Speed   Droop   Device. a.  Remove  the  cover,  shut-off  cam,  shut-off shaft   assembly,   throttle   shaft   assembly,   throttle shaft   lever,   and   governor   linkage   hook.   Remove   end plate    assembly. b.   Remove   the   adjusting   cap   (8,   fig.   14-24)   by pulling  to  the  rear  of  the  pump.  With  a  pair  of  needle- nose   pliers,   remove   the   control   rod   clip   (4).   Do   not bend   the   control   rod.   Loosen   and   remove   the   control rod  guide  (6),    “O” ring (5) and guide washer (1 5). Disengage   the   governor   spring   (2)   from   the   governor arm  (1)  and  remove  the  governor  spring  and  control rod   assembly   as   a   unit. c.   Examine   the   governor   spring   for   distortion   and the–spring   guide   and   bushing   for   excessive   wear. Replace  the  two  seals  on  the  control  rod  guide. Check   control   rod   for   straightness   and   replace,   if needed. d.   Insert   the   control   rod   assembly   (3)   through   the threaded   hole   from   the   inside   of   the   housing.   Slide the  control  rod  guide  (6),  O  ring  (5)  and  guide  (9)  over the  end  of  the  control  rod  (3),  and  thread  into  hous- ing.   Tighten   securely.   Insert   clip   (4)   into   the   con- trol  rod  end  being  careful  not  to  bend  the  rod.  Slide the  adjusting  cap  (8)  over  the  new  seal  on  guide  (6). Thread  five  full  turns  of  governor  spring  (2)  onto  the spring  guide  (9)  with  the  spring  guide  and  bushing  (10) against  each  other  as  shown  in  figure  14-24.  Slip  the free  end  of  the  governor  spring  over  the  formed  ends of  the  governor  arm  (1)  with  the  bent  end  of  spring between  the  two  tabs. e.   Install   the   end   plate,   throttle   shaft   assembly, throttle   shaft   lever,   shut-off   shaft   assembly,   and shut-off   cam.   Adjust   low   idle   adjusting   screw   so bushing  (10)  just  touches  rod  guide  and  forked  end  of throttle   shaft   lever   straddles   and   engages   flats   on bushing.   Replace   cover. The   speed   droop   assembly is  now  positioned  for  minimum  droop. f.   During   bench   test,   make   normal   check   of   out- put,   metering   and   transfer   pump   pressure   at   full   load governed  speed  as  called  for  in  paragraph  14-48.  High idle  adjusting  screw  should  be  backed  all  the  way  out and   throttle   held   open   as   far   as   possible.   Refer   to   par- agraph  14-48  for  bench  test  of  fuel  injection  pump.  See figure  14-24  while  making  adjustments  an  speed  droop. 14-51