Main Bearing Clearance Inspection (with micrometer)
- Measure the crankshaft journal diameter.
- Use a micrometer to measure the crankshaft journal diameter across points (''A – A'') and (''B – B'').
- Use the micrometer to measure the crankshaft journal diameter at the two points (I and II).
Crankshaft journal diameter:
Standard (New):
Size mark 
51.918 – 51.928 mm
(2.0440 – 2.0444 in.)
Size mark
51.928 – 51.938 mm
(2.0444 – 2.0448 in.)
Service limit:
Size mark
51.912 mm (2.0438 in.)
Size mark
51.922 mm (2.0442 in.)
- Measure the main bearing inside diameter.
- If the clearance between the measured bearing inside diameter and the crankshaft journal exceeds the specified limit, the bearing and/or the crankshaft must be replaced.
Crankshaft journal and bearing clearance:
Standard (New):
0.030 – 0.058 mm
(0.0012 – 0.0023 in.)
Service limit:
0.08 mm (0.003 in.)
Crankpin and Bearing Clearance Inspection (with plastigage)
- Clean the crankshaft, the connecting rod, the bearing cap and the bearings.
- Install the bearing to the connecting rod and the bearing cap.
NOTE: Do not allow the crankshaft to move when installing the bearing cap.
- Prevent the connecting rod from moving.
- Attach the Plastigage to the crankpin. Apply engine oil to the Plastigage to keep it from falling.
- Install the bearing cap and tighten it to the two steps specified torque.
NOTE: Do not allow the connecting rod to move when installing and tightening the bearing cap.
1st step torque:
25 Nm (2.5 kgf/m, 18 lbf/ft)
2nd step:
100°
- Remove the bearing cap.
- Compare the width of the Plastigage attached to either the crankshaft or the bearing against the scale printed on the Plastigage container.
Crankpin and bearing clearance:
Standard (New):
0.025 – 0.058 mm
(0.0010 – 0.0023 in.)
Service limit:
0.1 mm (0.004 in.)