1 Cover gasket
2 Oil change hole
3 Cylinder head cover
4 Reinforcing bar
5 Oil deflector plate
6 Cylinder head bolt
7 Nut, 10 Nm
8 Bracket for alternator
9 Cylinder head gasket
1 cylinder head
11 Sealing insert, replace every time
Disassembly of the cylinder head
Before performing work, unscrew all attachments of the cylinder head.
Clamp the head in a vice on the bracket screwed onto the exhaust manifold studs.
Gradually and alternately loosen on each side of the camshaft bearing caps No. 1 and No. 3, and remove them. No. 4 cover is missing on this engine.
1 Camshaft bearing caps
2 Bearing cap nut, 20 Nm
3 Camshaft
4 Key
5 Camshaft drive gear
6 Bolt, 80 Nm
7 Washer
Loosen bearing cap nuts #2 and #5 gradually two turns in a criss-cross pattern until both caps are released. Remove the oil backflow protection in place of the fourth cover. Mark the O-ring in cap #1. It is better to do this by inflicting risks on the inside, i.e. for the first pusher - one line, for the second - two lines, etc. You should start from the drive side of the gas distribution mechanism. Pushers should not be laid on their side, but should be installed with the contact surface down. Hydraulic tappets are marked on the inside with marks in the order of installation.
You will need a valve puller to remove the valves. The pusher presses on the top spring cup to compress the spring. The device is put on the cylinder head. The tool lever must be pressed down. The tool piston must fit into the recess on the inside of the spring, otherwise the spring cannot be compressed. Compress the spring so that the crackers can be pulled out.
To remove the valve, you can use a piece of pipe by installing it on the upper spring plate. On the other hand, substitute something under the valve plate. Hit the pipe with a hammer to remove the crackers. They will go inside the pipe. The pipe should be well pressed against the valve plate so as not to lose crackers.
Pull out the spring plates and springs. Pull out the valve stem seals and discard as they will need to be replaced with new ones. Remove the lower spring plate from the bore using tool 3047 or an internal ferrule plier.
Read the following instructions carefully before assembling the cylinder head:
The camshaft bearing caps must be installed in a specific order. The order in which the cover bolts are installed and tightened is very important.
It is necessary to measure the bearing clearances and the axial clearance of the camshaft. When replacing a camshaft, be sure to install a shaft that matches the type of engine.
The segmented key must be firmly seated in the shaft.
The semi-circular sealing insert must be replaced every time.
Before installing the hydraulic tappets, check them every time.
Observe the correct installation direction of the valve spring plates when assembling the valves.
Cylinder head parts
1 hydraulic pusher
2 Rusks
3 Valve spring plate
4 Valve spring
5 Valve stem seal
6 Valve spring seat
7 Valve guide
8 Sealing insert
9 Cylinder head, a - cylinder head height
10 Camshaft oil seal
11 Valves
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