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TM  9-2815-202-34 (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 (72) out of cylinder head with valve guide remover (73). Place cylinder head right side up on bed of an arbor press. Position valve guide squarely in bore. Using valve guide installer (74), press into position until tool contacts cylinder head. (4)  Valve  bridge  guides (a)  Inspect  valve  bridge  guides  for  wear. Replace  guides  as  follows: 1. 2. 3. 4. 5. File or grind two opposite notches 0.06 inch deep in side of bridge guide (18) approximately 1.25 inches from  top. Using bridge guide remover set, place spacer (75) over guide. Slide guide remover (76) over guide and aline set screws with notches ground in guide. Tighten set screws to secure guide remover in place. Place spacer (77) over guide remover (76). Thread nut (78) on guide remover and turn clockwise to withdraw guide from cylinder head. Change 1 5-45


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