Caution! Under no circumstances should the cylinder head be removed when the engine temperature is above 40°C, as this may result in deformation of the cylinder head.
Note: If the car is equipped with an anti-theft system with a security code, you must have the code with you to turn on the system after connecting the battery.
Fig. 105. Details of the upper part of the cylinder head: 1 - bolt, 16 N·m; 2 - central cover (above the top of the intake manifold); 3 - oil filler cap; 4 - nut, 10 Nm; 5 - stiffener; 6 - cylinder head cover; 7 - oil deflector shield; 8 - cylinder head mounting bolt; 9 - cylinder head cover gasket; 10 - cylinder head; 11 - cylinder head gasket; 12 - lifting eye; 13 - camshaft gear wheel; 14 - plug; 15 - from the crankcase ventilation system; 16 - T-shaped fitting; 17 - O-ring (always a replacement)
The parts that need to be removed in order to remove the cylinder head from the cylinder block are shown in Fig. 105.
Remove the cylinder head in the following order:
- disconnect the "-" terminal from the battery by unscrewing the corresponding bolt and nut;
Attention! To avoid damage to the ECU, disconnect the battery terminals only when the ignition is off.
Attention! When disconnecting the battery, all codes recorded in the memory device are erased.
- drain the coolant from the cooling system (p. 5.1.1);
- remove the upper part of the intake manifold;
- disconnect the upper coolant hose from the radiator to the pipe;
- disconnect all electrical wires from the cylinder head;
- disconnect the fuel lines, throttle cable and brake booster vacuum hose;
Caution! Fuel lines are under pressure. Before disconnecting a fuel hose from its mount, grab the fuel hose connection with a thick rag and, carefully pulling it from the mount, relieve pressure in the system.
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- mark and disconnect all pipes, electrical wires, hoses, connections, etc. between the cylinder head and the body;
- remove cover 6 (Fig. 105) of the cylinder head together with the gasket;
- remove the oil deflector shield 7 (Fig. 105) and two reinforcements located on the sides of the cylinder head cover;
Fig. 106. Timing mechanism drive parts: 1 - bolts, 55 Nm; 2 - bolt, 20 Nm; 3 - engine mount clamp; 4 - upper part of the protective cover; 5 - tensioner roller; 6 - dust cap; 7 - bolts, 10 Nm; 8 - lower part of the protective cover; 9 - Cooling system pump drive pulley; 10 - poly V-belt; 11 - flywheel; 12 - V-belt; 13 - Cooling system pump pulley; 14 - bolt, 25 Nm; 15 - crankshaft pulley; 16 - bolt, 25 Nm; 17 - V-belt tensioner lever
- remove the upper protective cover 4 (Fig. 106) of the toothed drive belt;
- unscrew the tension mechanism fastening nut, loosen the toothed drive belt (see subsection 3.7) and carefully remove it from the camshaft pulley. Keep the belt taut and tie it in the appropriate manner so that it does not slip off the crankshaft pulley. But do not tie it too tightly;
- unscrew the rear timing belt protective cover from the cylinder head, located behind the timing belt;
Fig. 107. Sequence of tightening the cylinder head bolts. Loosen the bolts in the reverse order
- in several steps, unscrew the cylinder head mounting bolts in the reverse order to that shown in Fig. 107, remove the bolts and remove the cylinder head with the gasket.
Fig. 108. Camshaft parts: 1 - bearing cover No.5; 2 - bearing cover No.4; 3 - bearing cover No.3; 4 - bearing cover No.2; 5 - nut, 20 Nm; 6 - bearing cover No.1; 7 - camshaft; 8 - segment key; 9 - bolt with washer, 80 Nm; 10 - camshaft gear wheel
The camshaft 7 (Fig. 108) can also be removed from the engine installed on the vehicle (see p. 3.3.3).
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