TM   5-2815-241-34&P PISTON  AND  CONNECTING  ROD  -  CONTINUED ACTION LOCATION ITEM REMARKS 2. Upper  bearing  (5) Take  out. Tag  and  hold  for  inspection. 3.  Bearing  cap  (2) Lower  bearing  (6) Take  out. Tag and hold for inspection. 4. Piston (7) Four  piston rings  (8) Using piston ring expander, take off. 5.  Piston  pin  bore  (9) Two  retaining Using 6-inch snap-ring pliers, take out. rings   (10) WARNING Heat-protective cloth mittens must be worn to prevent serious injury to hands when handling  heated  parts. CAUTION Pistons must be heated in hot water to prevent piston damage during piston pin removal. Do not drive piston pin with hammer. Driving may cause distortion of piston, causing piston seizure in cylinder sleeve. 8 . Piston (7) and connecting  rod  (1) a. Submerge in 2-gallon container of boil- ing water for 15 minutes to allow pistons to   expand. b. Remove from boiling water, clamp con- necting  rod  gently  in  machinist’s  vise. c. Push piston pin (11) out of piston pin bore (9). d. Tag  piston,  piston  pin  (11),  and  con- necting  rod,  and  hold  for  inspection. T A    2 4 2 4 8 7 2-221