Quantcast CLEANING/INSPECTION - TM-5-2815-241-34P_244

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TM   5-2815-241-34&P PISTON  AND  CONNECTING  ROD  -  CONTINUED ACTION LOCATION ITEM REMARKS CLEANING/INSPECTION NOTE For general cleaning procedures, see General Maintenance Instructions, page 2-3. Pistons should be inspected at ambient temperatures of 70° to 90°F (2° to 32°C). 7 . Piston   (1) a. Inspect  wear  surface  for  scoring,  scuf- fing, and cracks. If scoring, scuffing, or cracks exist, discard   piston. b. Inspect piston pin bore (2) for fractures. If fractures exist, discard piston. c. Using  ST-560  ring  groove  gage  (3) check top and second ring groove lands (4)  depth  for  wear. If shoulders of gage (5) touch ring groove lands (4), discard piston. d.    Using dial bore gage, measure piston pin  bore  (2)  Inside  diameter. If piston pin bore (2) exceeds 1.999 inch  (50.775  mm)  at  70°F  (21°C) discard  piston.  Add  0.0005  inch (0.013  mm)  per  each  10°F  (5.5°C) over 70°F. T A    2 4 2 4 8 8 2-222


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