TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 (39)   When   proper   depth   has   been   obtained, allow  cutter  to  dwell  for  approximately  10 seconds  to  ensure  a  good  seat  and  clean grooves. (40)   Coat new O-ring with clean engine lubricating oil.  Install O-ring into groove of injector sleeve bore in head. (41)   Using  an  injector  sleeve  driver,  push  new injector  sleeve  into  bore  of  cylinder  head until it bottoms.  Do not strike mandrel with hammer during this step. Remove mandrel. (42)   Install  an  injector  sleeve  holding  tool  and tighten  nut  to  35  to  40  foot-pounds  (47  to 54 joules) torque. (43)   Insert    mandrel    into    sleeve    bore,    strike mandrel two moderate blows with hammer to  ensure  that  injector  sleeve  is  properly seated.    Retighten  injector  sleeve  holding tool   to   35   to   40   foot-pounds   (48   to   55 joules) torque. (44)   Roll   top   1/2   inch   (12.70   mm)   area   of sleeve   with   expanding   roller.      Use   inch- pound  torque  wrench  to  turn  mandrel  until a   75   inch-pound   (8.5   joules)   maximum torque    reading    is    obtained    on    torque wrench. CAUTION Over-rolling of injector sleeve will cause deformation of sleeve into O-ring groove. (45)   Cut injector seat to provide proper seat and injector   tip   protrusion.      Use   the   injector sleeve   cutter   in   a   drill   press   with   pilot, using  a  solid  stream  of  good  cutting  oil  to allow  cutter  to  cut  freely  without  grabbing, etc.    To  determine  amount  of  cut,  insert injector,  and  torque  to  specifications,  then measure tip protrusion (see tabulated data in  Chapter  1).    Depth  of  cut  must  provide protrusion of injector cup tip beyond milled face    of    cylinder    head,    as    specified    in Chapter   1   under   Injector   Tip   Protrusion, when injector is installed. (46)   Sleeve  must  "blue  in"  with  Prussian  Blue 360   degrees   around   injector   seat   when injector is installed in cylinder head.  Bluing band    must    be    0.060    inch    (1.52    mm) minimum width. (47)  Perform  the  hydrostatic  test  of  paragraph 13-27 e (2). (48)   Using  the  adapter  wrench,  remove  spark plug adapters from heads. (49)   Clean   and   lubricate   spark   plug   adapter threads  in  the  cylinder  head  by  "chasing" with a 7/8-14 UNF tap or cap- screw coated with lubricating oil.  Clean the machined O- ring  seating  surface  in  the  cylinder  head with   fine   emery   paper   to   remove   scale build-up, etc., and to ensure proper seating of the adapter O-ring. (50)   Clean spark plug adapter seating areas. (51)   Clean  threads  and  gasket  seating  area  of the adapter. (52)   Lubricate O-rings and O-ring seating areas in   bores   of   heads   with   clean   engine   oil. Position new gaskets and O-rings on spark plug     adapters.          Screw     adapters     into cylinder heads and tighten to 70 to 80 foot- pounds (95 to 105 joules). g. Assembly and Testing.  Proceed as follows: (1)   Clean   cylinder   head,   valves,   springs,   etc. Before assembling. (2)   Lubricate  valve  stem  with  clean  engine  oil and insert valves in valve guides. (3)   Place cylinder head face 13-86