Quantcast Inspection/Repair - TM-9-2815-202-34_422

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TM  9-2815-202-34 5-37. CYLINDER HEAD REPAIR (Cont) d. Inspection/Repair NOTE If  warpage  exceeds  limits,  reface cylinder head. Do not remove more metal from fire deck than minimum distance of 3.536 inches from top of deck  to  bottom  of  fire  deck. (1) Cylinder head (a) (b) Check fire deck surface of cylinder head for flatness. Using a straight edge (68) and a set of feeler gages (69), check lengthwise (six places) and crosswise (five places) warpage. Maximum lengthwise warpage is 0.008 inch and maximum crosswise warpage is  0.004  inch. Inspect cam follower bores in cylinder head for scoring and wear. Clean up light score marks with crocus cloth wet with fuel oil. Measure diameter of cam follower body and cam follower bore to determine  clearance.  Maximum clearance is 0.006 inch. Replace cylinder head if bores are excessively worn or scored. (2)  Water  nozzles Check water hole nozzles (70 and 71) for looseness. If necessary, replace nozzles as  follows: (a) (b) (c) 5-44 Remove old nozzle (70 or 71 ) and clean bore in cylinder head. Position nozzle (70) in end bore or nozzle (71 ) in inner bore as shown. Press nozzle (70 or 71 ) 0.003 inch above to 0.010 inch below surface of cylinder  head. Change 1


 


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