Lubricate the valve stems well with engine oil and insert them into the guide bushings.
Insert the lower valve spring plates using special pliers.
Install the valve stem seals on the valve stem. You can use the special tool shown in the figure for installation figure 59, as follows:
- place the plastic sleeve included in the tool kit onto the protruding valve stem;
- lubricate the oil deflector cap of the stem 2 and put it on the sleeve of the device 3. Move the device to the cap and carefully put it on the valve stem.
Warning: Attempting to install the cap without using a special tool may result in damage to the cap, which will result in significant oil consumption.
Please note that if the valves were previously lapped, they must be installed in their original locations, otherwise their working chamfers will not match.
Reinstall the inner and outer springs in their original positions (if they have not been replaced). When replacing valve springs in an engine with hydraulic tappets, it is necessary to pay attention that they were shorter.
Install the upper spring plate and install the special spring compressor. When the end of the rod appears above the plate after the spring is compressed, insert both crackers into the groove with pliers and slowly release the spring compression. Before doing this, check whether the crackers previously used fit the new valves. They must match the valve shown in Figure 190.
Use a plastic hammer to hit the end of the valve stem several times. If the crackers were installed incorrectly, they should fall out of the grooves. To be on the safe side, cover the stem with a rag.
Install the pushers in their original places according to their marks (see figure 43) and corresponding adjusting washers.
Lubricate the camshaft journals and bearings with engine oil. Install the shaft so that both cam lobe projections above the valves of the first cylinder are directed upward.
Install bearing caps Nq 1, 3 and 5 (figure 193) and lightly press them with nuts. Since the covers cannot be swapped, you should check whether they are installed correctly (figure 194).
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Tighten the cover mounting nuts gradually, in a criss-cross pattern, and then tighten to a torque of 20 Nm.
Take the camshaft oil seal and determine which side the working edge is on. After installation, it should be facing outward. Lightly lubricate the working edge of the oil seal and the place where it contacts the shaft. Install the oil seal on the shaft journal using a pipe of a suitable diameter. The oil seal should be installed flush with the end surface of the cylinder head. The oil seal can be installed in another way, just like the front crankshaft oil seal.
Install the toothed pulley (not forgetting about the key) and tighten the bolts of its fastening. Lock the toothed pulley (for example, with an old toothed belt) and tighten the bolts to a torque of 45 Nm.
Install the intake and exhaust manifolds (using new gaskets).
Screw in the injectors. Install other auxiliary units and cylinder head parts.
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