Sequence of fastening bolts of camshaft bearing caps (1998 cc models with 16 valves)
Removal
1. Remove the ground wire from the battery.
2. Remove the cylinder head cover.
1905cc 16 valve models
3. Remove the bolt from the plastic cover of the power steering pump pulley.
4. Remove the drive belt from the steering drive pulley.
5. Unscrew the bolt and remove the pulley from the end of the camshaft.
6. Remove the pulleys from both camshafts.
7. Remove the distributor cover and distributor rotor.
8. Unscrew the bolt and remove the ignition distributor and sealing disc.
9. Unscrew the bolt securing the inner timing belt cover from the cylinder head side.
10. Loosen the oil supply pipe to the camshaft bearing caps and remove it.
11. Turn the camshaft so that the key slots are approximately at the 3 o'clock position.
12. Loosen the camshaft bearing caps evenly and gradually, which reduces the valve spring pressure on the bearing cap. Once the spring pressure is relieved, the bolts can be completely unscrewed and removed.
13. Remove the bearing caps, marking the location of the pins.
14. Remove the camshafts from the cylinder head, seals and axial movement lock.
15. Using a rubber suction cup, remove the valve tappet and be sure to turn it over to prevent engine oil from leaking out of the tappet. Mark the location of the tappets for reinstallation.
1998cc 16 valve models
16. Remove the pulleys from the camshaft and, where necessary, also remove the vacuum pump from the left front end of the cylinder head.
17. Unscrew the six bolts securing the inner timing belt cover to the engine block and remove the cover.
18. Loosen the oil supply pipe to the camshaft bearing caps and remove it.
19. Remove the distributor cover and distributor rotor.
20. Unscrew the bolt and remove the ignition distributor and sealing disc.
21. The camshaft bearing caps are numbered 1 through 5, with cap 1 located on the drive side.
22. The covers are removed in the reverse order to that shown in the figure. Sequence of fastening the bolts of the camshaft bearing covers (1998 cc models with 16 valves).
23. Loosen the camshaft bearing caps evenly and gradually, which reduces the valve spring pressure on the bearing cap. Once the spring pressure is relieved, the bolts can be completely unscrewed and removed.
24. Remove the bearing caps, marking the location of the pins.
25. Remove the camshafts from the cylinder head, seals and axial movement lock.
26. The camshaft that controls the intake valves has a groove for the brake system vacuum pump at the left end.
27. Using a rubber suction cup, remove the valve tappet and be sure to turn it over to prevent engine oil from leaking out of the tappet.
28. Mark the location of the tappets for reinstallation.
All other models
29. Remove the pulley from the camshaft.
30. Remove the ignition distributor.
31. Remove the fuel pump.
32. Loosen the oil supply pipe to the camshaft bearing caps and remove it.
33. The camshaft bearing caps are numbered 1 through 5, with cap 1 located on the drive side.
34. Loosen the camshaft bearing caps evenly and gradually, which reduces the valve spring pressure on the bearing cap. Once the spring pressure is relieved, the bolts can be completely unscrewed and removed.
35. Remove the bearing caps, noting their orientation.
36. Remove the camshaft from the cylinder head.
37. Using a rubber suction cup, remove the valve clearance adjusting washers. Mark the location of the tappets for reinstallation.
Examination
1. Check the condition of the working surfaces of the camshaft bearings, the profile of the cam and the journal of the shaft. If the camshaft bearings in the head are worn out, the cylinder head must be replaced.
2. Check the condition of the working surfaces of the valve tappet.
3. If you hear valve knocking when running a warm engine with hydraulic tappets, the hydraulic tappet should be checked and possibly replaced.
4. On 1580 cc and 1905 cc models, check the axial shaft locking fork.
Oil supply pipe to bearing caps
A - Oil supply pipe to bearing caps of early models without seal;
B - Oil supply pipe to bearing caps of later models with round section gaskets
Installation
Caution! If new hydraulic tappets are installed, they must be filled with oil. The tappets are placed in a bath of engine oil and compressed repeatedly.
Before installing the camshaft, lubricate all working surfaces with a thin layer of engine oil.
1905 cc and 1998 cc models with 16 valves
1. Install the camshafts on the head. Temporarily install the woodruff keys and pulleys. Rotate the camshafts so that the keyway is approximately at the 3 o'clock position (see figure Sequence of fastening the bolts of the camshaft bearing caps (1998 cc models with 16 valves)).
2. Install the bearing caps and tighten them evenly and gradually.
3. Install the oil feed pipe to the camshaft bearing caps together with the O-rings, checking that the holes are clean. When installing the oil feed pipe to the camshaft bearing caps, do not displace the O-rings.
4. Install the inner timing belt cover.
5. Install new seals on the camshaft.
6. Install the ignition distributor.
7. Install the pulleys on the camshaft.
8. Install the power steering drive pulley and its housing.
9. Install the head cover.
10. Connect the ground wire to the battery.
Other models
11. Install the valve clearance adjusting washers in their places.
12. Install the camshafts onto the head. Temporarily install the key and pulley.
13. Install the bearing caps using the markings noted during removal and tighten them evenly and gradually.
14. Install the oil supply pipe to the camshaft bearing caps together with the O-rings, checking the holes for cleanliness.
15. Install the ignition distributor.
16. Install the fuel pump.
17. Install new seals on the camshaft.
18. Install the head cover.
19. Connect the ground wire to the battery.