Quantcast FLYWHEEL HOUSING BORE CHECK (cont)
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TM 10-3930-664-24 CAUTION Use  care  when  raising  crankshaft  to prevent     damage.      Do not force crankshaft   beyond   the   point   where bearing clearance has been removed. 6. Using  a  floor  mounted  support  and  padded  pry bar, raise rear of crankshaft to its upper limit. 7. Record  new  dial  reading  at  12  o’clock  position. New reading indicates vertical bearing clearance. 8. Calculate a "total horizontal" value by subtracting the 3 o’clock reading (step 3) from the 9 o’clock reading:   9 o’clock reading - 3 o’clock reading = total horizontal value 9. Calculate a "total vertical" value by adding the 12 o’clock  reading  (step  3)  to  the  vertical  bearing clearance (step 7):    12 o’clock reading + vertical bearing clearance = total vertical value 10. Mark   the   "total   horizontal"   value   on   horizontal side  of  adjacent  chart.    Mark  the  total  vertical" value on vertical side. 11. Using a straight edge, find the intersection point of  the  two  values.    Intersection  point  must  fall within shaded area of chart. 12. If intersection falls outside shaded area on chart, housing concentricity is not within specifications. Remove    flywheel    housing  (paragraph  C)  and remove dowel rings. 13. After dowel rings are discarded, reinstall flywheel housing.      Tighten   capscrews   enough   to   hold housing in place, but loose enough to allow small movement when struck lightly with a mallet. 14. Recheck concentricity.  Torque capscrews. 3-40

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