Removal of a head of the block

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

– install the car on a horizontal surface and fix it;

– remove a cowl from the car;

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

– merge engine oil from the engine;

– merge cooling liquid from the cooling system;

– take off auxiliary driving belts;

– install the piston of the first cylinder in the provision of VMT;

Fig. 3.68. Head of the block of cylinders: 1 – a head of the block of cylinders, 2 – laying of a head of the block of cylinders, 3 – the directing valve plug, 4 – a forward cover of the bearing of the camshaft, 5 – a bolt of fastening of a head of the block of cylinders, 6 – a maslootrazhatelny plate, 7 – laying of a cover of a head of the block of cylinders, 8 – a cover of a head of the block of cylinders, 9 – a plate, 10 – a stopper of an oil-filling mouth, 11 – the union of the valve of the regulator of ventilation of a case

– weaken collars and disconnect radiator hoses from unions on a head 1 (see fig. 3.68 .) block of cylinders;

– weaken collars and remove hoses of a broad tank and a heater from unions of a head of the block of cylinders;

– for convenience of access to the engine remove the top forward cross overlay, headlights, a front grille and the lock of a cowl;

– disconnect from tube nozzles giving fuel;

– disconnect the returnable fuel tubes connecting nozzles to the fuel pump;

– mark (not to mix at assembly) and disconnect electric plugs;

– uncover a head of the block of cylinders (see section 3.3.10);

– remove a forward casing of a GRM belt and take off a GRM belt from a camshaft pulley;

– remove the GRM belt tension mechanism, a pulley of the camshaft and a pulley of the fuel pump of high pressure.

– unscrew screws and remove a back casing of a GRM belt;

– disconnect the plug from the sensor of temperature of cooling liquid;

– turn off bolts and disconnect a reception exhaust pipe from a final collector.

For the cars equipped with a turbocharger:

– remove a turbocharger from a final collector;

– where it is established, remove the EGR valve and the pipe connecting inlet and final collectors;

– turn off a nut of fastening of the feeding tire of contact of a glow plug of the 4th cylinder;

– remove a spring ring and unscrew the plug of a plait of wires from a head of the block of cylinders;

– check that all hoses, pipes and wires were disconnected from a head of the block of cylinders;

– consistently, as it should be, the return to tightening, turn off bolts 5 (see fig. 3.68 ) fastenings of a head of the block of cylinders at first on 0,5–1 turn, and then turn out them completely;

– remove a head of the block of cylinders 1 from the engine;

– remove laying 2 heads of the block of cylinders from the top part of the block of cylinders. Do not throw out old laying — it is required for identification new;

– take the directing pins from the block of cylinders if they are an easy fit and can fall out, and you store them together with a head of the block of cylinders;

– turn off bolts and remove an inlet collector and laying from a head of the block of cylinders;

– turn off bolts and remove the heat-resistant screen from a final collector;

– turn off nuts and remove a final collector from a head of the block of cylinders;

– clear the interfaced surfaces of an inlet and final collector and a head of the block of cylinders. Establish a final collector with new laying on a head of the block of cylinders and fix it by nuts the determined moment;

– install the heat-resistant screen on racks of a final collector and fix it by nuts the determined moment;

– establish an inlet collector with new laying on a head of the block of cylinders and fix it by bolts the determined moment.

Installation of a head of the block of cylinders

Before installation of a head of the block of cylinders it is necessary to carry out the following preparatory work:

– clear the interfaced surfaces of a head and the block of cylinders. For their cleaning use a firm plastic or wooden scraper;

– check the interfaced surfaces of a head and the block of cylinders for existence of notches, deep scratches and other damages. If defects small, they can be removed with grinding. But at major defects of a detail are subject to replacement;

PREVENTION When cleaning be careful as it is very easy to damage aluminum alloy. You watch that the deposit did not get to oil canals and channels of cooling liquid. If necessary clear channels.

– check not planeness of the interfaced surfaces by means of a metal ruler;

– clear openings under bolts in the block. Screwing up of a bolt in the opening filled with oil can break off the block because of hydraulic pressure.

– irrespective of their state bolts of fastening of a head of the block of cylinders are subject to replacement.

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

– check marking (number on the brink of laying or an opening) old laying of a head of the block of cylinders;

– if at repair pistons did not change, then new laying of a head of the block of cylinders has to have the same marking, as old;

– if on the engine new pistons are installed, it is necessary to measure a vystupaniye of pistons from the block of cylinders and according to this size it is necessary to choose thickness of new laying of a head of the block of cylinders (see tab. 3.5 )

– establish new laying of a head of the block of cylinders on the directing pins so that marking of "TORAHS" was directed up;

GOOD ADVICE Take two used bolts of fastening of a head of the block of cylinders, cut off heads and in a bolt end face, saw through a groove under the screw-driver. Screw bolts in the block of cylinders of the engine, and they will serve as guides at installation of a head of the block of cylinders. After installation of a head of the block of cylinders they need to be turned out.

– establish a head of the block of cylinders.

– grease a carving and a reverse side of heads of new bolts of fastening of a head of the block of cylinders with engine oil;

– accurately, without throwing, to a vstvta bolts of fastening of a head of the block of cylinders in openings also tighten them by hand;

Fig. 3.70. Order of an inhaling of bolts of fastening of a head of the block of cylinders

– in stages (see section 3.1.1) tighten bolts of fastening of a head of the block of cylinders in the sequence shown in fig. 3.70 ;

– establish a back casing of a GRM belt;

– install the mechanism of a tension of a GRM belt and pulleys;

– be convinced that the piston of the first cylinder is in the provision of VMT and establish a GRM belt and an external casing of a GRM belt;

– you make installation of the removed elements in the sequence, the return to removal;

– fill in engine oil in the engine;

– fill the cooling system.