1. Clean off any carbon deposits along the edges of the cylinder block beds. Clean the oil grooves in the cylinder block beds from deposits.
2. Install the main bearing shells in the cylinder block bed in accordance with the marks made during disassembly. Please note that the middle insert 1 is without a groove. When installing the main bearing shells, their locking tabs must enter the grooves of the bearing beds. Lubricate the main bearing shells with engine oil.
Caution! After installing the main bearing shells in the bed, their ends protrude slightly outward, so to correctly orient the shells when finally tightening the bearing cap bolts, make sure that the protrusion of both ends is the same.
3. Install the crankshaft into the cylinder block.
4. Lubricate the thrust half rings with engine oil. Pay attention to the grooves of the half rings: these sides of the half rings should be installed towards the crankshaft cheeks.
5. Install the steel-aluminum half ring (white color) from the front side of the middle bed (from the camshaft drive side)...
6. ...metal-ceramic half ring (yellow color) - on the other side of the bed.
7. Turn the steel-aluminum and metal-ceramic half rings so that their ends are flush with the ends of the bed.
8. Insert the liners into the main bearing caps in accordance with the marks made during disassembly. In this case, the locking tabs of the liners must enter the grooves of the main bearing caps. Lubricate the main bearing shells with engine oil.
9. Install the main bearing caps according to the marks. The main bearing caps are marked (notched) in accordance with the cylinder number. The exception is the fifth main bearing cap, which has two marks, just like the second one. On the second main bearing cap there are two threaded holes for the oil receiver mounting bolts. In this case, the cylinder numbers are counted from the camshaft drive side, and the main bearing caps are installed with marks 1 towards the generator bracket 2.
10. Lubricate the threads and ends of the heads of the cover mounting bolts with engine oil.
11. Tighten the main bearing cap bolts to the specified torque (see appendix 1) in the following order: first tighten the bolts of the third cover 1, then the second 2 and the fourth 3, then the first 4 and the fifth 5. After tightening the bolts, turn the crankshaft 2-3 turns - it should rotate easily, without jamming.
12. For ease of installation, lubricate the oil pump gasket with a thin layer of grease and "glue" it to the block. Remove excess grease.
13. Install the oil pump and tighten its mounting bolts (see "Removal and installation the oil pump").
14. For ease of installation, lubricate the rear oil seal retainer gasket with a thin layer of grease and "glue" it to the block. Remove excess grease.
15. Install the rear oil seal holder and tighten the bolts that secure it.
16. Insert the connecting rod into the piston in accordance with the previously made marks so that part number 1 on the connecting rod faces the opposite direction from the lug 2 on the piston boss.
17. To press in the piston pin, it is better to use a special device. If it is not available, you can select a suitable mandrel.
18. Heat the upper head of the connecting rod in the oven to 240°C for 15 minutes. Clamp the connecting rod in a vice, install the piston on it so that the holes for the pin match, and insert the device with the pin into the holes of the piston and connecting rod until it stops. For correct installation of the pin, the piston boss must be pressed against the upper head of the connecting rod in the direction of pressing.
19. After the connecting rod has cooled, lubricate the piston pin through the hole in the piston bosses.
20. Install the retaining rings on both sides of the piston pin. In this case, pay attention to the fact that the rings must be clearly installed in the piston grooves.
21. Install the oil scraper ring expander onto the piston.
22. Install the piston rings. It is recommended to do this using a special puller. If it is not there, install the piston rings on the piston, carefully spreading the piston ring locks.
23. The order of installing piston rings: the oil scraper ring is installed first (the oil scraper ring lock must be located on the opposite side from the release spring lock), then the lower compression ring, and lastly the upper compression ring.
24. Please note that the piston rings may have the inscription "VAZ", "VERKH" or "TOR" stamped on them. The piston rings should be installed with this inscription facing up (to the piston bottom). If there is no inscription, the oil scraper and upper compression rings can be installed in any position.
25. The lower compression ring differs from the upper compression ring not only in thickness, but also in the presence of a groove and must be installed with this groove facing down.
26. Turn the piston rings in the piston grooves and make sure that they rotate easily. If any piston ring does not turn or sticks, it must be replaced.
27. Rotate the piston rings on the piston so that their locks are located at an angle of 120° to each other.
28. Carefully wipe the crankshaft connecting rod journals with a clean cloth.
29. Carefully wipe the cylinder mirrors with a clean cloth and lubricate them with engine oil.
30. Insert the connecting rod bearing into the connecting rod in accordance with the previously made marks so that the bearing tab enters the groove in the connecting rod. After this, lubricate the connecting rod bearing and piston with engine oil.
31. Place a special mandrel on the piston to compress the piston rings and carefully lower the connecting rod into the cylinder. It is recommended to pre-rotate the crankshaft so that its connecting rod journal, on which the connecting rod and piston group is mounted, is set to BDC. The arrow on the piston bottom should point toward the front of the engine (towards the camshaft drive).
32. Press the mandrel firmly against the block and use the hammer handle to push the piston into the cylinder. If the mandrel does not fit tightly against the cylinder block, the piston rings may break.
33. Install the lower connecting rod head onto the crankshaft journal.
34. Insert the insert into the connecting rod cap in accordance with the previously made marks so that the tab of the insert enters the groove in the cap. After this, lubricate the liner with engine oil.
35. Install the connecting rod cover. The cylinder numbers on the cover and the lower connecting rod head must be on the same side.
36. Tighten the connecting rod cap nuts to the specified torque (see appendix 1). Install the remaining pistons in the same way.
37. Install the oil receiver and tighten the three bolts that secure it.
38. Apply anaerobic thread locker to the flywheel mounting bolts. Install the flywheel, lock plate and tighten the flywheel mounting bolts (see "Removal, inspection and installation of the flywheel").
39. For ease of installation, apply a thin layer of consistent grease to the surface of the block and "glue" the oil pan gasket to it.
40. Install the oil pan and tighten its mounting bolts (see appendix 1). Then assemble the engine in reverse order. Installation of the cylinder head is described in the subsection "Replacing the cylinder head gasket", camshaft drive belt - in the subsection "Timing Belt Replacement (camshaft drive) and tension roller".