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TM9-2815-202-34 4-38.   CYLINDER   HEAD   REPAIR   (Cont) (b)  Position  nozzles  (68)  in  end  bore  or  nozzles  (69)  in  inner  bore  as  shown. (c) Press nozzles (68 or 69) 0.003 inch above to 0.010 inch below surface of cylinder head. (3)  Exhaust  valve  guides Inspect valve guides for fractures, chipping,  scoring,  or  excessive  wear. Measure  inside  diameter  of  valve guide and diameter of valve stem to determine  clearance  between  guide and valve stem. If clearance exceeds 0.005  inch,  replace  valve  guide. Replace valve guide as follows: (a) (b) (c) (d) Support  cylinder  head,  bottom side up, on three inch thick wood blocks. Drive valve guide (70) out of cylinder  head  with  valve  guide remover (71 ). Place cylinder head right side up in arbor press. Position valve guide squarely in bore. Using valve guide installer tool (72), press guide into position until tool contacts cylinder head. 4-192 C  h  a  n  g  e       1


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