TM  10-3930-643-34 GENERAL  SUPPORT  ENGINE,  FUEL,  EXHAUST  AND  COOLING  MAINTENANCE. 13-8. Pistons, Connecting Rods and Connecting Rod Bearings. (Sheet 3 of 12) DISASSEMBLY 2. 3. 4. Use extreme care when removing piston and connecting rod assembly. Failure to follow this procedure could result in damage to cylinder sleeves or crankshaft journals. Using a plastic mallet, remove items 4 thru 11 as an assembly through top of crankcase by using a wood punch to push connecting rod (4) and piston (5) to top of cylinder from lower crankcase. Wrap an oil soaked cloth around crankshaft  connecting  rod  journals  in lower crankcase to protect it until installation. Using a ring expander tool, remove rings (6, 7 and 8) in order and discard. Go to sheet 4 13-51