(3) . MAXIMUM BORE SIZE IS 280 mm.(4) . COUPLING HALF MATES WITH D31749 USING M36-8.8 GR (x180 LG) HEX HD BOLTSAND PREVAILING TORQUE LOCK NUTS, TIGHTENED TO 2300 Nm.(5) . STANDARD BORE TOLERANCE IS H7.(6) . LOCATION OF THE OIL INJECTION HOLE IS DEPENDENT ON BORE SIZE.