(1) by measuring the bearing diameter were measured * bearing shell shall be installed, and tighten to specified torque) and the axis neck diameter, the difference between the two diameter is bearing clearance. (2) 10 mm in width, length, slightly smaller than bearing width, thickness of allows not repair clearance copper, along the axial put between the bearing and the journal, with the specified torque after tightening, in trying to turn the crankshaft stress condition (don't too hard, so as not to damage the bearing shell), such as can turn, means that gap is too big. (3) between the bearing and shaft neck, perpendicular to the axis direction, a proper thickness of soft metal or soft wire, with the specified torque to tighten the tiles, take out the soft metal, measuring the thickness of this value is the bearing clearance.