TM   5-2815-241-34&P PISTON  ASSEMBLY  REMOVAL INITIAL  SETUP Tools Reamer,   ridge Materials/Parts Cloth,  emery  (item  1,  appendix  B) Personnel   Required Two Equipment   Condition Crankshaft  removed  (page  2-49). ACTION LOCATION ITEM REMARKS CAUTION If ridge in cylinder bore is present and must be removed, care should be taken not to remove more material than necessary. NOTE Steps given are typical for all six piston assemblies. 1. Cylinder block (1) Cylinder  bore  (2) Using  ridge  reamer,  remove  ridge. CAUTION When performing step 2, care should be taken not to damage cylinder bore. Use emery cloth to remove rough surface left by ridge reamer. 2. Cylinder  bore  (2) Using emery cloth, remove rough surface. NOTE Before performing steps 3 and 4, cleaning of cylinder bores may be required. See general  cleaning  procedures,  General  Maintenance  Instructions,  page  2-3. When  installing  connecting  rod  cap  to  connecting  rod,  make  sure  tang  on  connecting rod and connecting rod cap are alined properly. 2-52