Main Bearing Cap

Main Bearing Cap








Install the main bearings and the thrust bearings.
Remove dust, dirt, and oil from the bearing mating surfaces of the cylinder block and lower cylinder block.
Install the thrust bearings to both sides of the No. 3 main bearing journal on the cylinder block.
Install the thrust bearings with the oil groove facing the crankshaft arm (outside).





Install the main bearings paying attention to their position and direction.
The main bearing with an oil hole and groove goes on the cylinder block. The one without them goes on the lower cylinder block.
Only the main bearing (on the cylinder block) for No. 3 journal has different specifications.
Before installing the bearings, apply engine oil to the bearing friction surface (inside). Do not apply oil to the back surface, but thoroughly clean it.
When installing, align the bearing stopper to the notch.
Make sure that the oil holes on the cylinder block and those on the corresponding bearing realigned.

OUTER DIAMETER OF LOWER CYLINDER BLOCK BOLT
^ Perform only with M10 (0.39 inch) bolts.
^ Measure outer diameters (d1, d2) at two positions as shown.
^ Measure d2 at a point within area A as shown.





^ When the value of d1 - d2 exceeds the limit (a large difference in dimensions), replace the bolt with a new one.
Limit 0.13 mm (0.0051 inch)