Attention! If the plugs of the cooling system channels fall into the channel of the cylinder block, then it is usually impossible to remove them.
1. With light blows of a hammer, knock out the edges of the plugs from the cylinder block so that the plugs turn in the holes. Then remove the plugs from the holes with pliers (see photo).
2. Remove all remnants of gasket material from the cylinder block with a spatula, being careful not to damage the split planes.
3. Remove covers of radical bearings and get bearings from the block of cylinders and covers. Inscribe the number of the cylinder to which the removed main bearing corresponds, as well as the part from which it was removed (from the bearing cover or from the bed of the cylinder block).
4. Turn out and remove all carving plugs of channels of the block of cylinders. The plugs are almost impossible to remove, so drill them out and re-thread them with a tap. When assembling the engine, replace all plugs.
5. If the engine is very dirty, it should be cleaned in a car service with a jet of steam, or in a hot chamber.
6. Additionally clean all oil channels and holes. Blow out the internal passages of the unit with compressed air.
7. If the block is slightly dirty, then you can limit yourself to washing with warm water with detergent and a stiff brush.
8. Using a tap, restore the threaded holes of the cylinder block (see photo).
9. Establish covers of radical bearings on a place, tighten bolts by hand.
10. Using a mandrel, press new plugs of the cooling channels into the block, having previously lubricated the plugs with Permatex N1 sealant (see photo).
11. Lubricate the plugs of the oil channels with Permatex N2 sealant and screw them into the holes of the cylinder block.
12. If the engine will not be assembled at the moment, then cover the cylinder block with a plastic cover.