Measuring Oil Clearance

Check for oil clearance by measuring the outside diameter of the crankshaft journal and the inside diameter of the bearing. The clearance can be obtained by calculating the difference between the measured outside diameters.

Standard value 

Oil clearance

Crankshaft main bearing :

0.022 ~ 0.040 mm (0.0009 ~ 0.0016 in.)

Connecting ~ rod bearing :

0.026 ~ 0.044 mm (0.001 ~ 0.0017 in.)

Fig 1: Measuring Outside Diameter Of The Crankshaft Journal

Courtesy of HYUNDAI MOTOR CO.