Contents: Removal ↓ Installation ↓
Removal
1. Prepare the car for work and disconnect the terminal from the negative terminal of the battery (see "Preparing the car for maintenance and repair").
2. Drain the coolant from the engine (see "Coolant - replacement").
3. Remove the air filter (see "Air filter - removal and installation").
4. Remove the intake manifold and exhaust manifold from the engine (see "Intake manifold and exhaust manifold of the 2111 engine (1.5i 8v) - removal and installation, gasket replacement", or see. "Intake manifold and exhaust manifold of engine 21114 (1.6i 8v) - removal and installation, gasket replacement").
Comment.If necessary, the cylinder head can be removed together with the fuel system components and the exhaust manifold.
5. Remove the cylinder head cover (see "Cylinder head cover for engines 2111 and 21114 (8v) - removal and installation, gasket replacement").
6. On engines with a camshaft position sensor, disconnect the wiring harness connector from this sensor (see "Camshaft Position Sensor - Checking and Replacing").
7. Disconnect the high-voltage wires from the spark plugs (see "High-voltage wires of engines 2111 and 21114 (8v) - checking and replacement").
8. Disconnect the wire tip from the coolant temperature sensor (see "Coolant Temperature Sensor - Checking and Replacing"). For ease of operation, disconnect the wiring harness connector from the knock sensor (see "Knock sensor - testing and replacement") and move the sensor wiring harness to the side.
9. Disconnect the wire tip from the coolant temperature gauge sensor (see "Coolant Temperature Gauge Sensor - Checking and Replacing").
10. With a socket wrench by 13 mm we unscrew the nut securing the ground wire to the engine and remove the wire tip from the stud.
11. With a socket wrench by 13 mm we unscrew the two nuts securing the thermostat housing.
12. Remove the thermostat housing from the cylinder head studs and, without disconnecting the hoses, move it to the side.
13. Remove the sealing gasket.
14. Unscrew the nut and bolt of the upper fastening of the rear timing belt cover (see "Coolant pump - replacement").
14. Key Torx E14 we unscrew 10 bolts securing the cylinder head.
15. Pulling the rear timing belt cover slightly to the side, remove the cylinder head.
16. Remove the cylinder head gasket.
17. Remove two guide bushings from their seats.
Installation
1. We flush the cylinder head from dirt and deposits with kerosene or diesel fuel.
2. Remove from the threaded holes of the cylinder block (under the cylinder head mounting bolts) oil and coolant residues.
3. Clean the mating surfaces of the head and cylinder block from the remains of the old gasket, degrease the surfaces with a solvent.
Warning! Always use a new gasket when installing the cylinder head. Do not allow oil to come into contact with the gasket surface
4. Install the head guide bushings into the cylinder block mounting locations.
5. Place the gasket on the cylinder block, while the guide bushings should enter the corresponding holes of the gasket.
6. Install the head on the cylinder block. Slightly moving the head from side to side, we ensure that the guide bushings enter the corresponding holes in the head.
Warning! Reuse of cylinder head bolts is only permitted if their length does not exceed 135.5 mm
7. Using a caliper or a mechanic's ruler, measure the length of the bolts. Replace bolts longer than 135.5 mm.
8. Before tightening, dip the threaded part of the bolts in engine oil, then let the oil drain, waiting about half an hour.
9. Install bolts with washers into the head holes.
10. Using a torque wrench, tighten the head mounting bolts (in the sequence shown in the photo) in four steps:
- tighten the bolts to a torque of 20 Nm (2 kgf·m);
- tighten the bolts to a torque of 69.4-85.7 N·m (7.1-8.7 kgf·m);
- we turn the bolts by 90°;
- we turn the bolts 90° again.
Tightening sequence of head bolts
11. Further assembly is carried out in reverse order.