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TM 9-2815-225-34&P 3-29. PISTON, CONNECTING ROD, AND BEARINGS REMOVAL THIS TASK COVERS: Removal INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All None SPECIAL TOOLS TROUBLESHOOTING REFERENCES Two nylon guide screws (15434) 3375601 Para. 2-8 Piston ring expander (15434) ST-763 EQUIPMENT CONDITION TEST EQUIPMENT Camshaft and cam followers removed (para. 3-28). None SPECIAL ENVIRONMENTAL CONDITIONS MATERIALS/PARTS Work area clean and away from blowing dirt and Cloth, crocus (Appendix C, Item 4) dust. PERSONNEL REQUIRED GENERAL SAFETY INSTRUCTIONS Automotive repairman MOS 63H Eye protection must be worn when using wire brush for cleaning. LOCATION/ITEM ACTION REMARKS Removal WARNING Eye  protection  must  be  worn  when  using  wire  brush  for  cleaning.    Failure  to  do  so  may result in injury to personnel. NOTE This task covers removal of one piston, connecting rod, and bearing assembly.  Removal of the  remaining  five  assemblies  is  the  same.    Parts  are  not  interchangeable  and  must  be identified with each assembly as it is removed. 1. Cylinder block (11) a.  Place in vertical position with rear of block down. b.  Using a rotary wire brush or This step is performed so rings aluminum bladed scraper, clean will not snap or chip when piston all carbon deposits from upper and connecting rod assembly is inside wall of cylinder liner (9). removed.  Use lint-free cloth to remove loose debris from cylinder liner (9). 2. Crankshaft (10) Rotate until connecting rod cap (7) is accessible. 3. Two rod screws (8) a.  Loosen until there is approxi- mately 3/8 in. (9.5 mm) between head of screws (8) and connecting rod cap (7). b.  Using soft-nose hammer, tap on heads of screws (8) until connecting rod cap (7) and piston and connecting rod assembly (5) are separated. c.  Remove from piston and connect- ing rod assembly (5) and connect- ing rod cap (7). 3-68


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