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Removing the cylinder head
Cylinder head removed from the engine to the car, if corrective action is not required to disassemble the whole engine.
A warning Under no circumstances remove the cylinder head temperature is higher than 40 ?� C, as this may cause deformation of the cylinder head. |
Note If the car has an alarm system with security code, the code is necessary to have at itself, to turn the system on after connecting AB. |
| Fig. 105. Details of the upper portion of the cylinder head 1 - bolt 16 Nm; 2 - the central cover (above the upper part of the inlet pipeline); 3 - oil filler cap; 4 - nut 10 Nm; 5 - rib; 6 - cylinder head cover; 7 - flap valve stem; 8 - a bolt of fastening of the cylinder head; 9 - laying the cylinder head cover; 10 - cylinder head; 11 - cylinder head gasket; 12 - Lifting eye; 13 - a cogwheel of a camshaft; 14 - cap; 15 - from the crankcase ventilation system; 16 - T-fitting; 17 - O-shaped sealing ring (always replace)
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The details that you want to take to dismantle the cylinder head from the cylinder block shown in Fig. 105. Removing the cylinder head spend in the following order: - Disconnect terminal "-" of the AB, unscrewing the appropriate nut and bolt;
A warning In order to avoid damage to the computer, you must disconnect the terminals AB only with the ignition off. |
A warning When disconnecting the AB erase any codes in the memory. |
- Drain the cooling liquid from cooling system (Sec. 5.1.1); - Remove the upper part of the intake manifold; - Disconnect top coolant hose from the radiator to the pipe; - Disconnect all electrical wires from the cylinder head; - Disconnect the fuel lines, the accelerator cable and vacuum hose brake booster;
A warning The fuel lines are under pressure. Before disconnecting the fuel hose from its mounting, grasp the point of attachment of the fuel hose thick cloth and gently pulling it to the site of attachment, release pressure in the system. |
- Mark and disconnect all lines, electrical wires, hoses, connections, etc. between the cylinder head and the body; - Remove the cover 6 (see. Fig. 105) of the cylinder head with the gasket; - Remove the valve stem plate 7 (see. Fig. 105) and two gain at the sides of the cylinder head cover;
| Fig. Details of the drive mechanism 106. The timing 1 - bolts 55 Nm; 2 - bolt 20 Nm; 3 - Clamp the engine mount; 4 - the top of the protective cover; 5 - roller tensioner; 6 - dust cap; 7 - bolts 10 Nm; 8 - the lower part of the protective cover; 9 - pulley the coolant pump; 10 - ribbed belt; 11 - a flywheel; 12 - V-belt; 13 - a pulley of the pump of the cooling system; 14 - bolt 25 Nm; 15 - the crankshaft pulley; 16 - bolt 25 Nm; 17 - the lever of poly V-belt tensioner
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- Remove the upper protective cover 4 (Fig. 106) the timing belt; - Loosen the nut tightening mechanism, loosen the timing belt (see. Sect. 3.7) and carefully remove it from a camshaft pulley. At the same time keep the belt vnatyag and appropriate way tie him to not slipped with the crankshaft pulley. But do not tie him with the greatly strained; - Remove the cylinder head from the rear cover of a gear belt, located behind the toothed belt;
| Fig. 107. The sequence of the bolts fastening the cylinder head. Unscrewing bolts in reverse order
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- In several stages unscrew in sequence, return shown on Fig. 107, the bolts of the cylinder head, remove the bolts and remove the cylinder head gasket.
| Fig. 108. Details of the camshaft 1 - bearing cover number 5; 2 - bearing cover number 4; 3 - bearing cover number 3; 4 - a cover of the bearing number 2; 5 - nut 20 Nm; 6 - bearing cover number 1; 7 - camshaft; 8 - Woodruff; 9 - a bolt with a washer 80 Nm; 10 - a cogwheel of a camshaft
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Camshaft 7 (see. Fig. 108) can also be removed from the engine mounted on the car (see. P. 3.3.3).
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