Crankshaft Pin Oil Clearance < PLASTIGAGE Method >

The crankshaft oil clearance can be measured easily by using plastigage method, as follows:

1. Remove oil from the crankshaft pin and the bearing inner surface.
2. Cut plastigage to the same length as the width of the bearing and place it on the pin in parallel with its axis.
3. Install the connecting rod cap carefully and tighten the nuts to the specified torque.
4. Carefully remove the connecting rod cap.
   Fig 1: Identifying Plastigage Crankshaft

   
5. Measure the width of the smashed plastigage at its widest section by using a scale printed on the plastigage bag.

   Standard value: 0.012 - 0.039 mm (0.0005 - 0.0015 inch) 

   Limit: 0.1 mm (0.004 inch) 

   Fig 2: Checking Crankshaft Pin Oil Clearance