
2. Unscrew and remove the oil pressure sensor (photo).

3. Remove the oil level dipstick.
4. Disconnect the crankcase ventilation hose from the camshaft cover (photo).

5. On fuel-injected models, unbolt the auxiliary air valve hanger from the camshaft housing (photo). Remove the gasket.

6. Unscrew the camshaft cover, remove the gasket. Note the location of the high-voltage wire hanger (photo).



7. Remove the cooling fan pulley by holding the hub with a wrench while loosening the pulley screw (photo).


8. Unfasten and remove the two timing belt covers (photo).



9. Turn the engine with a wrench on the crankshaft pulley bolt until the mark on the camshaft sprocket aligns with the pointer on the top of the rear timing belt cover. Also align the notch in the crankshaft pulley with the pointer on the bottom of the rear timing belt cover (photo).


10. Loosen the bolts securing the water pump to the block.
11. Loosen and remove the bolt securing the timing belt cover to the oil pump housing.
12. Unscrew the crankshaft pulley bolt, securing the flywheel/drive disk (photo).

13. Unscrew the crankshaft pulley/vibration damper from the sprocket (photo).

14. Turn the water pump housing counterclockwise. Remove the toothed drive belt from the water pump sprockets, camshaft and crankshaft (photo).

15. Pull off the crankshaft sprocket, then remove the woodruff key and gasket (photo).



16. Having secured the camshaft sprocket as shown (photo), unscrew the clamp bolt. Remove the sprocket from the camshaft (photo).


17. Unscrew and remove the three clamp bolts and washers, remove the water pump from the block.
18. Unscrew and remove the rear cover of the toothed drive belt (photo).

19. Unscrew the oil filter from the oil pump housing (photo).

20. Unscrew the cooling fan hub hanger from the unit (photo).

21. Unscrew the thermostat housing from the cylinder head, remove the O-ring (photo).



22. Remove the crankcase ventilation pipe from the camshaft housing and block by disconnecting the hose and unscrewing the flange mounting bolts (photo). Remove the gasket.


23. Working in a spiral from the outside to the inside, loosen each cylinder head bolt a quarter turn. Then, in the same sequence, loosen the bolts a half turn, then remove them completely. Note that the cylinder head bolts must be replaced each time they are removed; prepare a new set of bolts for assembly.
24. Lift the camshaft housing and camshaft.
25. Lift the cylinder head from the block.
26. Remove the gasket from the block (photo).

27. Unscrew the camshaft retaining plate bolts, remove the retaining plate, and remove the camshaft from the camshaft housing (photo).



28. Remove the rocker arms and axial pressure shoes from the cylinder head. Remove the hydraulic valve lifters, place them in a container with clean engine oil to prevent oil from leaking out. Remove all components, noting their position (photo).



29. With the flywheel/drive plate secured as described in step 12, remove the bolts and lift the block off the crankshaft (photo). Discard the flywheel/drive plate bolts; when installing, use new ones.
[Article published on the website: OpelBook.ru]


30. Turn the engine over on the workbench.
31. Unscrew the bolts and remove the pan (photo).


32. Remove the partition, remove the rubber gasket by the edge (photo).


33. Unscrew the oil suction pipe from the block and oil pump (photo).

34. Unscrew the oil pump, remove the gasket (photo).


35. Mark the connecting rod caps and connecting rods relative to each other, numbering them from the front end of the engine.
36. Lay the block on its side, then unscrew the lower connecting rod head bolts of cylinder No. I and remove the cover (photo). Remove the connecting rod and piston through the top of the block. Temporarily install the cover on the connecting rod, leaving the bearing shells in their basic positions.

37. Repeat the procedure on the remaining pistons and connecting rods. Note that all connecting rod cap bolts must be replaced, have a new set of bolts ready for assembly.
38. The main bearing caps should already be numbered, starting from the front of the engine. However, if there are no marks, make them with a punch (photo).

39. Turn the block upside down again, then remove the main bearing bolts and caps (photo). Be careful to store the bearing shells in their respective caps. Note that the main bearing cap bolts should be replaced; prepare a new set of bolts for assembly.

40. Lift the crankshaft from the crankcase, remove the oil seal (photo).

41. Remove the upper halves of the main bearing shells from the crankcase and place them with the corresponding covers (photo).


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