Pic. 2.120. Components of the first stage of disassembly of the cylinder head: 1 - fastening bolts of camshaft sprockets; 2 - camshaft sprockets; 3 - control oil valve (OCV) (L3); 4 - camshaft covers; 5 - camshafts; 6 - valve pusher; 7 – a bolt of fastening of a head of the block of cylinders; 8 – a head of the block of cylinders; 9 – laying of a head of the block of cylinders; 10 - cylinder block
Loosen the camshaft sprocket bolts (see fig. 2.120) (bolt of fastening of the mechanism of change of phases of gas distribution), as shown in Figure 2.121.
Pic. 2.121. Loosening the camshaft sprocket bolts
Remove the camshaft sprockets. The actuator for changing the valve timing (L3 with variable valve timing).
Remove oil control valve (OCV) (L3 with variable valve timing).
Pic. 2.122. The sequence of loosening the bolts of the camshaft bearing caps
Remove the camshaft bearing caps by loosening the fastening bolts in three steps in the order shown in Figure 2.122.
Note. Before removing the camshaft bearing caps, check the axial clearance of the camshaft and the clearances in the camshaft bearings (see below). The camshaft bearing caps are numbered to ensure correct reassembly. After removal, keep the covers together with the cylinder head from which they were removed. Do not mix lids.
Remove the distributors.
Remove the valve lifters.
Note. The valve lifters are numbered to ensure correct reassembly. After removal, keep the valve lifters together with the cylinder head from which they were removed. Do not mix valve lifters.
Pic. 2.123. Cylinder head bolt loosening sequence
Loosen the cylinder head mounting bolts in two or three steps in the order shown in Figure 2.123.
Pic. 2.124. Components of the second stage of disassembly of the cylinder head: 1 – lifting lug of the engine; 2 - valve cracker; 3 - the upper plate of the valve spring; 4 - valve spring; 5 - valve; 6 – oil deflector cap; 7 - tube of the recirculation system; 8 - the body of the outlet pipes of the cooling system
Remove engine lifting eyes (pic. 2.124).
Pic. 2.125. Removing the valve cotter
Using the special tool, remove the valve cotters (pic. 2.125).
Remove the upper valve spring cap.
Remove valve spring and valve.
Pic. 2.126. Removing the oil deflector
Remove the oil seal using the special tool (pic. 2.126).
Remove the tube of the recirculation system.
Remove the housing of the outlet pipes of the cooling system.