w.  Open  valves  for  coolant  in  and  out  of  the heater  element  if  winterization  kit  is  installed x.   Install   electric   starter,   tool   box   and   fuel burning  heater  if  used. y.  Install  main  fuel  lines,  then  fill leaks. Fill  the  oil  pan  to  the  proper specified  engine  crankcase  lubricant. and  check  for  oil  leaks. Section XIII. FLYWHEEL AND HOUSING and  check  for level  with  the Run  engine 14-68,   General. The  flywheel  is  mounted  on  the  rear  of  the  cylinder block.  Its  purpose  is  to  insure  a  smooth  flow  of torque   at   the   engine   drive   output.   The   rotor   of   the main  generator  is  attached  with  two  disk  type  steel couplings  to  the  flywheel. 14-69.   Removal,   Inspection   and   Repair. a. Symptoms   and   Isolation   of   Malfunction.   A malfunction   associated   with  the   flywheel   is   usually indicated   by   excessive   vibration   and   noise. b. Removal. (1)  Remove  engine  from  unit  (para  2-13). Support  engine  on  blocks  or  suitable  stand. (2)   Remove   electric   starter.   Refer   to   @- erator   and   Organizational   Maintenance   Manual. (3)  Remove  six  hexsocket  capscrews  attach- ing   flywheel   to   crankshaft   flange.   See   figure   14-33. (4)   Install   two   long   capscrews   in   opposite holes   of   the   flywheel   face   to   serve   as   handles.   Pull on  capscrew  handles  while  supporting  flywheel  weight and   remove   flywheel. NOTE If  flywheel  cannot  be  removed  with  a direct   pull   on   the   handles,   it   maybe necessary  to  tap  flywheel  with  a  suit- able   brass   bar   through   the   electric starter   mounting   opening.   Turn   fly- wheel  and  tap  exposed  part  at  inter- vals  until  flywheel  can  be  remove  & (5)  Remove  ring  gear  from  flywheel  by grinding  a  notch  through  the  ring  gear  at  the  rod  of one  of  the  teeth.  Expand  the  ring  and  drive  it  from its  position. CAUTION Do  not  attempt  to  remove  ring  gear without  first  expanding  it. (6)  The  wear  sleeve  is  held  in  position  on the  flywheel  by  a  press  fit.  It  is  removed  with  a  pry bar   or   three-jawed   external   puller.   Wear   sleeve should  be  removed  with  an  even  motion. (8)   Remove   eight   capscrews   securing flywheel   housing   to   the   cylinder   block.   Tap   the housing  with  a  soft-headed  hammer  to  break  it  loose from   the   housing   dowels.   Remove   the   housing. c. Inspection. (1)  Thoroughly  clean  flywheel  housing with   cleaning   solvent,   Federal   Specification   P-D- 680.   Remove   preformed   packing   from   housing. (See  fig.  14-33) (2)  Inspect  housing  for  cracks  and  other damage. (3)   Inspect   ring   gear   for   nicks,   cracks, or   excessive   wear. (4)   Inspect   flywheel   for   nicks,   burrs   or dents.   All   burrs,   nicks   and   dents   must   be   removed from   the   flywheel   surface   that   fits   against   the crankshaft   flange. 14-70.   Reassembly   and   Installation. a. Place  flywheel  housing  on  a  bench  with  the preformed   packing   side   up.   Drive   out   the   packing from  the  housing  with  an  oil  seal  remover. b.   Clean   oil   seal   bore   in   the   flywheel   housing. — c.  The  outer  diameter  of  the  seal  comes  with a   layer   of   red-colored   sealant   which   eliminates   the use  of  a  sealing  compound  on  the  outer  diameter  of the  seal  prior  to  pressing  it  into  the  flywheel housing. d. Position   seal   squarely   with   bore   in   housing and,  using  a  seal  installer,  carefully  drive  seal  into flywheel  housing  until  it  is  seated  against  the  seal stop  in  the  bore. NOTE The  seal  must  be  installed  with  open side  of  seal  directed  toward  the cylinder   block e. Make  certain  the  crankshaft  flange  on  which the   seal   rides   is   free   from   nicks   or   burrs.   Polish with   crocus   cloth   if   necessary. f . Lubricate   flange   and   sealing engine  oil  Do  not  use  grease,  soap, lip  with  clean white  lead,  etc. (7)   Remove   capscrews   securing   oil   pan   to flywheel  housing. 14-70 Change 6