shaft  assembly  from  the  pump  body. (1)  Remove  the  pump  driven  gear  and shaft  assembly  from  the  pump  body. (m)  To  prevent  damage  to  the  drive  gear teeth  and  driven  gear  teeth  do  not  remove  the  gears from   the   shaft   with   a   gear   puller.   Press   the   gears from   the   shafts. 14-66.   Cleaning,   Inspection   and   Repair. a. Wash  all  pump  parts  in  cleaning  solvent, Federal  Specification  P-D-680. b.  Inspect  the  oil  pump  drive  gear,  the  driver  gear and   shaft   assembly   and   the   driven   gear   and   shaft assembly  for  wear  and  chipped  teeth.  Replace  worn  and damaged   parts. c. Inspect  the  inside  of  the  pump  body  and  the inner   face   of   the   cover   for   wear   or   scoring.   Replace damaged   part. d. Inspect   the   relief   valve   piston.   It   must slide–smoothly  in  the  bore  of  the  relief  valve  body. Replace  a  damaged  relief  valve  or  body. e. Inspect   the   heater   element   for   cracks,   and 1oose   or   bent   fins.   Replace   element,   if   it   is   severely damaged. f. Inspect   oil   pan   for   dents   or   cracks.   Dents must  be  smoothed  out.  Replace  oil  pan  if  badly  dam- aged. g.   Inspect   suction   tube   assembly   for   holes   and deformity. 14-67.   Reassembly   and   Installation. a.  Heat  the  driven  oil  gear  in  oil  to  350°  +  25° and press onto the shaft 0.848 inch from end. b.   Repeat   step   a.   for   the   driver   oil   gear,   ex- cept  that  the  gear  is  pressed  onto  the  shaft  1.812 inches  from  the  end. c.   Lubricate   gear   and   shaft.   Install   the   long end  of  the  driven  gear  and  shaft  assembly  into  the lower  chamber  of  the  oil  pump  body. d. Lubricate  gear  and  shaft.  Install  the  short end  of  the  driver  oil  gear  and  shaft  assembly  into  the upper  chamber  of  the  oil  pump  body. e.   Assemble   the   pump   cover   onto   the   pump body.   Use   the   two   5/8-inch   long,   grade   5,   lock   bolts in  the  top  holes. The  six  other  holes  use  1-inch bolts   with   a   lockwasher.   Tighten   the   bolts   to   a   torque of 18 to 20 foot-pounds. f . Before   proceeding   make   certain   that   the assembled  pump  will  turn  freely  without  binding. h.   Install   the   piston,   spring,   and   spring   re- tainer   in   the   relief   valve   body.   Depress   relief   valve spring   and   retainer   with   two   screwdrivers   or   an   im- provised   two-prong   tool.   Insert   a   3/16-inch,   or less,   drift   pin   into   the   roll   pin   hole.   Hold   the   re- tainer  with  the  drift  pin  until  the  roll  pin  is  installed. i . Install   the   relief   valve   assembly   into   the pump  body  and  tighten  securely. j . Install   the   suction   screen   assembly   onto   the pump body. k.   Install   heater   element   in   the   oil   pan   and secure   it   with   nuts,   lockwashers   and   capscrews. 1. Install  the  brass  fittings  on  the  inside  and outside  of  the  oil  pan. m. Lubricate   oil   pump   drive   gear   and   install oil  pump  assembly  onto  the  cylinder  block  with  the drive   gear   in   mesh   with   the   crankshaft   gear.   In- stall  bolts  and  torque  to  68  to  73  foot-pounds. n.   Position   brass   fittings   and   O   rings   and   in- stall  oil  discharge  tube  to  cylinder  block  and  oil pump   assembly;   tighten   fitting   securely. o.   Install   support   bracket   and   clamp   securing   oil suction  line. p. Install  a  new  gasket  set  to  the  rails  of  the oil  pan. q. For  ease  of  installing  the  oil  pan,  make  up two  guide  studs  and  screw  them  into  the  diagonal corners   of   the   cylinder   block. r . Position  the  oil  pan  with  the  front  end  up  and mount  the  oil  pan  on  the  guide  studs.  Hold  it  in position   by   inserting   a   capscrew   and   lockwasher   in each  corner,  but  do  not  tighten  them  so  that  the  oil pan  can  be  shifted. s. Remove   the   guide   studs.   Install   the   3/4- inch  long  capscrews  and  lockwashers  which  hold  the rear  flange  of  the  oil  pan  to  the  flywheel  housing. Tighten   the   rear   corner   capscrews   in   the   side   rail and  the  two  upper  capscrews  in  the  flywheel  housing alternately,    until    secure. t . Install   the   1-inch   long   capscrews   and   lock- washers,  securing  the  front  rail  of  the  oil  pan  to  the timing  gear  cover. Install   the   remaining   capscrews and   lockwashers.   Tighten   all   capscrews   securely   to a  torque  of  28  to  33  foot-pounds. u. Install  drain  valve  into  oil  pan  and  tighten securely. v.   Install   oil lines   to   the   heater stalled. drain   hose,   and   connect   coolant element   if   winterization   kit   is   in- g.  Heat  the  oil  gear  shaft  and  press  the  drive  gear onto the shaft allowing 0.057 to 0.062 inch to protrude. Change 6 14-69