d. Removal   of   Bearing   with   Generator   Installed. (1)  Disconnect  the  positive  battery  cable. (2)   Remove   paralleling   receptacle   panel. (a)   Disconnect   the   paralleling   receptacles. (b)  Tag  each  receptacle  for  proper  location. (3)  Remove  manual  speed  control  panel. (a)   Disconnect   flexible   cable   from   manual speed  control  knob. (b)   Disconnect   electrical   connector   from the  Remote  Control  Box. (4)   Generator   rear   grille   and   access   doors   are now  detached  and  may  be  removed. (5)   Remove   transformer   protective   cover. (6)  Remove  the  load  terminal  board  (TB6). (7)  Sequentially  remove  and  tag  each  of  the twelve  generator  leads  on  the  rear  of  the  load  ter- minal   board. (8)  Sequentially  route  the  generator  output leads   back   to   the   generator   through   their   respective current   transformers. (See  fig.  6-2) (9)  Disconnect  the  exciter  field  leads  from TB16  posts  15  and  16  and  route  the  leads  back  to  the generator. (10)  For  removal  of  bearing,  refer  to  f  steps (1)  through  (4)  inclusive. (11)   Reassemble   in   reverse   order   of   disassem- bly. e.  Removal.  Refer  to  paragraph  2-12  to  remove main   generator. f.   Disassembly. See   figure   9-1   and   disassemble in  the  order  of  sequence  numbers  observing  the  fol- lowing. (1)  Break  endbell  fit  by  tapping  on  knock  off lugs   located   in   the   45   degree   positions.   Slide   endbell axially  off  the  bearing. Pass  stator  leads  through endbell  opening  as  endbell  is  removed  from  the  stator. (2)   The   exciter   stator   maybe   removed   from the  endbell  assembly  by  removing  or  drilling  out  the dowel  pin  (26).  only  a  small  force  is  needed  to  re- move   the   stator. (3)  Remove  screw  with  an  Allen  wrench  and then   remove   bearing   retainer. (4)  Pull  the  bearing  (33)  with  a  suitable  bear- ing  puller  and  replace  with  new  bearing. (5)   To   remove   the   rotating   diode   assembly, bend  up  the  lock  tab  on  lockwasher  and  unscrew  the locknut. (6)   Unscrew   the   generator   field   leads   from   the plate   (8),   (fig.   9-2)   and   unsolder   the   six   exciter leads   from   the   diodes.   These   leads   should   be   tagged to  maintain  the  polarity  of  the  diodes  when  reassem- bled. CAUTION Use  a  soldering  iron  no  larger  than  100 watts  and  as  little  time  and  force  as  pos- sible   to   unsolder   the   leads.   The   diodes can  be  damaged  by  excess  heat  or  force sufficient  to  bend  the  stem  or  break  the glass   seal. (7)   The   surge   protector   may   be   removed   from the   rotating   diode   assembly. (8)   After   the   leads   are   disconnected,   the   rec tifier   assembly   (fig.   9-2),   key   and   spring   washer will  slide  off  the  shaft. (9)   To   remove   the   rotor   assembly   from   the stator   proceed   as   follows: Slide  the  rotor  through  the stator  toward  the  drive  end  far  enough  so  that  a  sling may   be   placed   under   the   generator   field   core.   Hoist the   rotor   slightly   to   free   it.   Pull   the   rotor   axially while  applying  leverage  at  the  drive  end  to  balance the  rotor  on  the  sling. It  may  take  one  or  two  repo- sitioning  of  the  sling  to  get  the  sling  near  the  center of  the  rotor  core  for  proper  balancing   of  the   assembly, (10)  The  exciter  rotor  may  be  removed  from the  shaft  by  using  a  bearing  puller  near  the  outside diameter.   Be   careful   not   to   bear   on   windings   if   ex- citer   rotor   is   to   be   reused. (11)  Balance  plates  are  shrunk  on  the  shaft and  may  be  removed  with  heat.  Apply  heat  with  a torch  to  the  hub  of  the  balance  plate.  Move  the  torch around  the  periphery  of  the  hub  using  care  not  to apply  the  torch  to  the  shaft.  The  balance  plate  bore will  expand  and  the  balance  plate  may  be  removed manually. (12)  The  coupling  hub  is  shrunk  fit  on  the  shaft. To  remove,  use  a  cutting  torch  to  cut  through  the  hub at   the   keyway   to   prevent   shaft   damage.   After   cutting through,  use  a  chisel  in  the  cut  to  open  the  bore  and remove  the  hub. (13)   The   generator   stator   core   is   not   to   be   re- moved  from  the  stat  or  frame  because  the  concentri- city  between  bore  and  rabbit  fits  would  be  disturbed and   cause   voltage   modulation   problems.   When   re- moving  the  rotor  stack  from  the  shaft,  remove  in  the direction,   that   the   stack   was   pressed   on. 9-4