TM 9-2815-225-34&P 3-69.  PISTON, CONNECTING ROD, AND BEARINGS INSTALLATION THIS TASK COVERS: Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All None SPECIAL TOOLS TROUBLESHOOTING REFERENCES Piston ring expander (15434) ST-763 Para. 2-8 Two connecting rod guide pins (15434) 3375601 Piston ring compressor (15434) 3375162 EQUIPMENT CONDITION    Cylinder liners installed (para. 3-67). TEST EQUIPMENT    Crankshaft and main bearings installed None (para. 3-68). MATERIALS/PARTS SPECIAL ENVIRONMENTAL CONDITIONS Oil, lubricating, OE/HDO 30 Work area clean and away from blowing dirt and (Appendix C, Item 21) dust. Piston ring set (15434) 3801056 GENERAL SAFETY INSTRUCTIONS PERSONNEL REQUIRED None Automotive repairman MOS 63H LOCATION/ITEM ACTION REMARKS Installation NOTE   Use  this  procedure  to  install  any  one  of  the  six  piston,  connecting  rod,  and  bearings assemblies.   Parts are not interchangeable.  Do not mix parts from one assembly with another.   Always replace bearing halves in pairs (upper and lower).   Check  for  marks  on  crankshaft  to  determine  bearing  size.    If  there  are  no  marks,  use standard-size parts. 1. Two new compression a.  Using piston ring expander (12), Use piston ring expander (ST-763). rings (1) and (3) and two install on piston and connecting To avoid damaging rings, do not new piston rings (2) and (4) rod assembly (5). overexpand during installation. Rings should only be expanded enough to allow them to fit over piston.  Install rings with word "top" toward top of piston. b.  Stagger ring gaps so they are not in line with each other or with piston pin. 2. Upper rod bearing half (6) Install on piston and Tang of bearing half (6) must be connecting rod assembly (5). into slot of connecting rod.  Ensure oil hole in bearing half (6) lines up with oil hole in connecting rod. 3. Lower rod bearing half (6) Install on connecting rod Tang of bearing half (6) must be cap (7). into slot of connecting rod cap (7). Cap (7) does not have an oil hole. 3-552