2. Remove the tray (see section 10).
3. Remove the oil pump intake pipe and mesh filter.
4. Check that the connecting rods and bearing caps are marked according to their position in the crankcase. If this is not the case, do it yourself. Note which side of the engine the marks are facing.
5. Unscrew the bearing cap bolts on the first connecting rod and remove the cap. If you are not going to replace the bearing shells, tape the shell to the cover.
b. Inspect the top edges of the cylinders for ridges. If there are ridges, carefully remove them using a special tool, otherwise, when pulling the piston out of the cylinder, the upper piston ring may get stuck on this ridge.
7. Press the wooden handle of the hammer against the connecting rod and push the connecting rod with the piston out of the cylinder.
8. Remove the remaining connecting rod and piston assemblies in the same manner, each time turning the crankshaft so that it is easier to reach the connecting rod bolts.
9. Disconnecting the pistons from the connecting rods must be performed by a specialist, as this work requires special tools and a press.
10. Lay out the pistons with connecting rods in the correct order together with the bearing shells. Check that the bearing seats are absolutely clean and reinstall the bearing shells.
11. Wipe the cylinders and lubricate them. Lubricate the piston rings well and check that the locks are spaced correctly (see section 34, paragraph 16).
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12. Install the piston ring compressor onto the first piston that needs to be placed in place.
13. Insert the connecting rod and piston group into the cylinder so that the compressor base rests on the cylinder block. Check that the marks on the connecting rod are facing the right direction. There are no marks on the piston bottom, but the cutouts on its lower surface can be used to judge whether it is installed correctly (see photo).
Photo 12.13. Cutouts on the lower surface of the piston: 1. Towards the flywheel.
14. Using a wooden hammer handle, hammer the piston into the cylinder while gradually removing the ring compressor (see photo).
Photo 12.14. Installing the piston into the cylinder block.
15. Bring the lower head of the connecting rod to the corresponding connecting rod journal and then place it on the journal, which must be well lubricated.
16. Replace the bearing cover and tighten the bolts to the specified torque.
17. Repeat the above operations on the remaining connecting rod and piston groups.
18. Install the cylinder head, oil pickup tube, mesh filter and pan (see previous sections).
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