Removing
1. Drain the engine coolant (see «Coolant - replacement»).
2. Remove the tips of high-voltage wires from the candles.
3. Remove the cylinder head cover (see «1.6i engine cylinder head cover gasket - replacement»).
4. Remove the camshaft pulley (see «Engine camshaft oil seal 1.61 - removal and installation»).
Comment. The head bolts are available with the camshaft installed, but a socket wrench with a special head is required. The cylinder head can be removed complete with the receiver and exhaust manifold. But if the head is removed for its repair, then it is better to disassemble it first (see «1.6i engine reservoir - removal, replacement of seals and installation» And «1.6i engine fuel rail - removal, disassembly, assembly and installation»).
5. Removing the thermostat housing from the cylinder head studs (see «Thermostat - removal, replacement and installation»).
6. Unscrew the nut and bolt of the upper fastening of the rear cover of the timing belt (see «Engine camshaft 1.6i - removal and installation»).
7. Using the Togh E14 key, evenly, in several stages, unscrew 10 cylinder head bolts.
8. Slightly pulling the rear cover of the timing belt to the side, remove the cylinder head.
9. Remove the cylinder head gasket and remove the two guide bushings from the seats.
Installation
1. We wash the cylinder head from dirt and deposits with kerosene or diesel fuel.
2. With a medical syringe or pear, remove from the threaded holes of the cylinder block (for head bolts) residual oil and coolant.
3. We clean the mating planes of the head and cylinder block from the remnants of the old gasket, degrease the planes with a solvent.
Warning! Always use a new gasket when installing the cylinder head. Oil contact with the gasket surface is not allowed.
4. We install the guide bushings of the head in the seats of the cylinder block.
5. We lay a gasket on the cylinder block, while the guide bushings must enter the corresponding holes in 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! The cylinder head bolts may only be reused if their length does not exceed 135.5 mm.
7. With a caliper or locksmith's ruler, we measure the length of the bolts. Bolts longer than 135.5 mm are replaceable.
8. Before wrapping, we dip the threaded part of the bolts into engine oil, after which we let the oil drain, after waiting about half an hour.
9. We install bolts with washers in the holes of the head.
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 Nm (7.1-8.7 kgf·m);
- we tighten the bolts by 90°;
- turn the screws 90°again.
11. Further assembly is carried out in the reverse order of removal.
Bolt tightening sequence