Contents: Removal ⬇ Installation ⬇
Removal
Note.
- Do not begin any work involving dismantling the cylinder head until the engine has cooled below 35°C.
- Turn the crankshaft to move all pistons away from top dead center (TDC).
1. Remove the timing chain housing (more details, see the relevant section in this chapter).
2. Remove the camshaft drive sprockets (more details, see the relevant section in this chapter).
3. Remove the intake manifold assembly (for more details, see the relevant section in the chapter Intake and exhaust system).
4. Remove the fuel rail assembly with the fuel injectors (for more details, see the corresponding section in the chapter Engine power supply and control system).
5. Disconnect all hoses, tubes and pipes from the cylinder head.
6. Loosen the mounting nuts and remove the exhaust manifold assembly (for more details, see the corresponding section in the chapter Intake and exhaust system).
7. Remove the cylinder head cover assembly.
8. Unscrew the cylinder head mounting bolts in two steps in the sequence shown in the figure below.
9. Carefully remove the cylinder head from the cylinder block.
Note: Do not place the cylinder head with the combustion chambers on hard surfaces.
Installation
Note: The pistons should not be at TDC.
Attention: Before starting work, put on protective gloves and glasses.
1. Using a special solvent, remove any remaining old sealant from the surface of the cylinder head and cylinder block joint.
Note.
- Always replace the cylinder head mounting bolts after disassembly.
- Prevent engine oil or coolant from getting into the holes for the cylinder head mounting bolts.
- The new cylinder head gasket must be removed from the packaging immediately before installation on the cylinder block.
- Extreme care must be taken with the cylinder head gasket, as any damage to it can lead to leaks.
2. Check and ensure that all cylinder head guide bushings are installed in the cylinder block.
3. Place a new cylinder head gasket on the cylinder block.
4. Carefully install the cylinder head onto the block.
5. Insert the cylinder head mounting bolts into the holes, having first applied a thin layer of engine oil to their threaded portion.
6. Tighten the cylinder head bolts in three steps in the sequence shown in the figure below.
- First approach: 30 Nm.
- Second approach: turn it by 90°.
- Third approach: turn again at an angle of 90°.
7. Further installation is carried out in the reverse order of removal.
Material is available on the website [SkodaBook]