III.  AXLE ADJUSTMENT A. General Adjustments may be necessary after an accident,     in     response     to     and     to     correct     steering problems,    tire    wear    problems    or    as    a    part    of    the reassembly process  after a thorough inspection. B. Wheel Bearing Adjustment 1. Raise  the  front  of  the  vehicle  with  a  jack  and secure     vehicle     with     jackstands     of     suitable capacity. 2. Remove front wheels from vehicle. 3. Remove   the   brake   drum.      (Disc   style   wheels only.) 4. With the end turned to full steering lock remove the   bolt   and   washer   retaining   the   outer   drive yoke.  (See fig.  14). 5. Remove the nuts from the outer axle shaft drive studs. 6. The flange should be loose enough to remove by hand.    If  not,  use  suitable  bolts  in  the  extractor holes  to  remove  the  outer  axle  shaft.    (See  fig. 15) Note:  If  oil  is  used  for  wheel  bearing  lubrication,  care should be exercised to protect brake linings, etc. 7. Remove the wheel bearing lock nut (See fig.  4) and   lockwasher   from   spindle.      Loosen   wheel bearing adjustment nut. 8. Tighten wheel bearing adjusting nut while turning the hub, back off 1/2 turn and then tighten to 50 ft.    lbs.    torque.    (See  fig.    4)  Back  off  1/4  turn. Install the wheel bearing lockwasher with tang in the  spindle  keyway  and  one  side  or  the  other toward the bearing locknut in such a way as to fit over the dowel. Install    the    outer    locknut    and    torque    to specification. With the locknut properly tightened, end play should be between .001 and .010 and the wheel hub should rotate freely. Fig.  4 9. Apply a bead of liquid sealant to outer axle shaft flange.  See Service Bulletin 738 407, Page 22. 10. Insert  the  outer  axle  shaft  into  the  spindle  bore, rotate  and  align  the  shaft  splines  with  the  outer drive  yoke  splines,  rotate  the  shaft  and  yoke  to align the shaft flange with the drive studs. Back   up   drive   yoke   with   suitable   weight. Tap axle shaft flange end to drive  the  shaft  into the    drive    yoke.        Assemble    the    drive    yoke retaining washer with a new sealing washer, and the bolt to the end of the axle shaft.  See fig.  39, page 19. Tighten to specified torque. 11. Push  axially  on  the  outer  drive  yoke  and  check for  positive  clearance  under  the  axle  shaft  for flange.        The    clearance    should    be    at    least .015inch.  (See fig.  40, page 19). 12. Install   axle   shaft   drive   stud   nuts.      Tighten   to Specified torque. 13. If   wheel   bearings   are   oil   lubricated,   refer   to Section II, A to refill. C. Kingpin Adjustment 1. The  front  of  the  vehicle  should  be  raised  and properly  supported.    Front  wheels  should  be  off the axle. 2. The  lower  kingpin  jam  nut  should  be  loose  or loosened and the lower kingpin ball stud backed down all the way. 3. Raise  the  wheel  hub,  spindle  yoke  and  kingpin bracket assemblies with a hydraulic jack located under the drum.  On units with an upper kingpin adjusting   screw   projecting   through   the   upper kingpin cap or steering arm, adjust the screw to raise the  aforementioned  parts.    Raise  unit  until the upward movement is resisted by the  bottom of the upper kingpin bearing coming into contact with   the   lower   spherical   surface   of   the   upper kingpin ball stud. 4. Put  a  stack  of  feeler  gauges  between  the  lower kingpin  bracket  and  the  suspension  yoke.    The feeler gauges should fill the gap snugly. 5. Turn the lower kingpin ball stud upward until the stack of feeler gauges loosen (See fig.  5). 6. Back  off  the  lower  kingpin  ball  stud  one  quarter turn (900). 7. Tighten  the  jam  nut  to  the  correct  torque  while restraining    the    lower    kingpin    ball    stud    from turning.  On units with an upper kingpin adjusting screw,  back   off   the   screw   1/4   turn.      Restrain screw while tightening locknut. 5-