TM  5-2815-241-34&P PISTON  AND  CONNECTING  ROD  -  CONTINUED ACTION LOCATION ITEM REMARKS CLEANlNG/lNSPECTlON   -   CONTINUED NOTE All connecting rod assemblies must be checked for twist, length, and alinement. The ST-561 connecting rod checking fixture must be calibrated before use. 14. Connecting rod  (1) Select  connecting  rod  that  has  been checked for correct crankpin bore (2) to piston pin bore (3) center length of 12  inches  (304.60  mm). NOTE For identification purposes, the connecting rod selected in step 14 will be referred to as “master  connecting  rod”  in  the  following  steps. 15.  Master connecting rod (1) Bearing cap (4) Make sure bearing cap is torqued correctly. See  step  11. 16. Piston  pin mandrel  (5) Insert  into  piston  pin  bore  (3). Mandrel Is furnished with checking fixture  kit. NOTE The expanding arbor must be installed with locking pin down and on center line of rod. 17. Expanding  arbor  (6) Insert  into  crankpin  bore  (2). Tighten to snug only. T A    2 4 2 4 9 2 2-226