PREVENTIONS In this subsection the order of removal of a head of the block of cylinders with inlet and final collectors assembled is described. It considerably reduces removal time, but at the same time it is necessary to use the load-lifting mechanism. On engines with system of injection of fuel before dismantle of a head of the block of cylinders remove the fuse of the fuel pump from the assembly block of the relay and safety locks. Then launch the engine and wait for its stop. It is necessary for pressure decrease in system of injection.

Carry out removal of a head of the block of cylinders in the following order:

– disconnect a wire from the negative plug of the rechargeable battery;

– merge cooling liquid;

– disconnect sleeves and hoses of the cooling system from a head of the block of cylinders;

– disconnect and remove high-voltage wires together with an ignition distributor cover. On DOHC engines remove the ignition distributor from a head of the block of cylinders;

– disconnect and remove an air supply sleeve between the air filter or the measuring instrument of a consumption of air and the case of a butterfly valve;

– disconnect a sleeve of supply of warm air from a final collector;

– disconnect a hose of ventilation of a case of the engine from a cover of a head of the block of cylinders or an inlet collector;

– disconnect a hose of the vacuum amplifier of brakes from an inlet collector;

– mark electric sockets of elements of system of injection of fuel and sensors for the subsequent their correct connection, then disconnect them;

disconnect an accelerator cable from the case of a butterfly valve;

– disconnect delivery and returnable highways from the central block of injection (Mopo-Jetronic system), the central fuel highway (Digifant system), fuel nozzles (the K-Jetronic system or KE-Motronic) and a starting nozzle;.

– disconnect vacuum hoses;

– uncover heads of the block of cylinders, the top casing of a belt of the GRM drive and a belt the cogged pulley of the camshaft (see subsection 3.1.5). The camshaft can be not removed;

– disconnect a final collector from a reception exhaust pipe;

– disconnect the oxygen sensor wire socket;

– turn off bolts of fastening and remove a protective plate of a belt of the GRM drive;

Fig. 3.14. Sequence of an inhaling of bolts of fastening of a head of the block of cylinders

– turn off bolts of fastening of a head of the block of cylinders in the sequence, their return inhaling (fig. 3.14) , on one turn for pass and remove bolts with washers;

– remove a head of the block of cylinders by means of the lifting device;

– remove laying of a head of the block of cylinders.

Carry out installation of a head of the block of cylinders in the following order:

– establish laying of a head of the block of cylinders on adjusting pins of the block of cylinders by the inscription "OBEN" or "TOP" up. Before installation be convinced that laying corresponds to engine model. Check that all openings of laying coincided with openings of the block of cylinders;

– establish a head of the block of cylinders;

– establish and tighten manually bolts of fastening of a head of the block of cylinders with washers;

– tighten bolts of fastening of a head of the block of cylinders in the sequence given on fig. 3.14 in three stages the moment (N · l):

The 1st – 40;

The 2nd – 60;

— to tighten the 3rd on 180 °;

– establish pushers and the camshaft (camshafts) if they were removed;

– establish a protective plate of a belt of the GRM drive, a belt, the lower and top covers of a belt of the GRM drive;

– connect all removed electric sockets;

– connect fuel highways, vacuum hoses and sleeves of the cooling system;

– fill in cooling liquid;

– connect a reception exhaust pipe to a final collector;

– install the ignition distributor on DOHC engines;

– connect a cable of an accelerator and check its adjustment;

– check tightness of connections of fuel system, cooling systems and production of the fulfilled gases after launch of the engine.