Note: the parts marked with an asterisk are those that are removed and installed when replacing the valve stem seals (28). In this case, when removing the valve crackers, it is necessary to set the piston of the corresponding cylinder to the TDC position.
1. Timing pulley of the camshaft drive; 2. Rear timing belt cover; 3. Intake camshaft oil seal; 4. Front cover of the intake camshaft bearing; 5. Oil line for lubrication of bearings; 6. Sealing ring; 7. Bearing caps; 8. Intake camshaft assembly; 9. Snap ring; 10. Wave elastic washer; 11. Additional gear; 12. C-shaped spring; 13. Thrust pin; 14. Intake camshaft; 15. Front exhaust camshaft bearing cover; 16. Bearing lubrication oil line; 17. Sealing ring; 18. Bearing caps; 19. Exhaust camshaft assembly; 20. Rocker arm assembly; 21. Lock nut; 22. Adjusting screw; 23. Support hinge screw; 24. Valve stem cap; 25. Valve crackers; 26. Valve spring plate; 27. Valve spring; 28. Oil seal; 29. Valve spring seat
Note: parts marked with an asterisk are removed and installed according to their relevance to the corresponding cylinder.
Removal and installation the toothed drive pulley
1. Screw the mounting studs (1) into the pulley and install the holder (2) on them (see Fig. M2 2.074).
2. While holding the camshaft from turning, unscrew the mounting screw and remove the pulley from the shaft.
3. When installing the pulley again (holding the shaft), tighten the fastening screw to a torque of 88±10 Nm.
Removal bearing caps
1. Remove the oil lines with seals.
2. Loosen the screws securing the covers in pairs in accordance with the numbering in Figure M2 2.075, then unscrew the screws and remove the covers.
A. Exhaust camshaft front bearing cap
B. Exhaust camshaft bearing caps
C. Intake camshaft front bearing cap
D. Intake camshaft bearing caps