2.11.3. Removal and installation of a head of cylinders on the car

The head of cylinders is removed from the engine on the car if for elimination of malfunction it is not required to disassemble all engine. For example, if it is necessary to remove a deposit from the surface of combustion chambers and valves or to replace valves or the directing plugs of valves.
Remove a head of cylinders in the following order:
– install the car on the elevator and remove pressure a fuel supply system. For this purpose disconnect a block of a plait of wires of an electrogasoline pump from a plait of wires of system of ignition, start the engine, let's it work to a stop, and then include a starter on 3 with for alignment of pressure in pipelines;
– disconnect a wire from the minus plug of the rechargeable battery;
– lift the car and merge cooling liquid from a radiator and the block of cylinders for what open the crane of a heater and turn off drain traffic jams on a radiator and the block of cylinders;
– disconnect a reception pipe of mufflers from a final collector, remove an arm of the bringing pipe of the pump of cooling liquid and the supporting arms of an inlet pipe;
– lower the car, disconnect hoses of a supply and discharge of fuel from tubes on the engine. Close openings of hoses and tubes that dirt did not get to them;
– disconnect an accelerator drive cable from a throttle branch pipe and from an arm on a receiver;
– remove hoses of the exhaust ventilation of a case, having disconnected them from branch pipes on a cover of a head of cylinders, from a hose of an inlet pipe and from a throttle branch pipe;
Fig. 2.3. Removal of knots and details of system of air supply: 1 – air filter; 2 – sensor of a mass consumption of air; 3 – throttle branch pipe; 4 – sealing laying; 5 – receiver; 6 – final branch pipe of the cooling system of the engine; 7 – collars of fastening of hoses; 8 – the bringing pipe of the pump of cooling liquid; 9 – hoses of heating of a throttle branch pipe; 10 – hose of an inlet pipe

– weaken coupling collars and disconnect from a throttle branch pipe a hose 10 (see fig. 2.3) an inlet pipe, an adsorber purge hose (if on the car there is a system of catching of vapors of gasoline), hoses of the 9th supply and removal of cooling liquid;
– disconnect from a receiver a hose of selection of depression to the vacuum amplifier of brakes;
– disconnect wires from spark plugs, from sensors of a control lamp of pressure of oil and the index of temperature of cooling liquid, from a throttle branch pipe and from temperature sensor on the taking-away cooling shirt branch pipe; disconnect wires from a plait of wires of nozzles;
– disconnect hoses from the taking-away branch pipe of a shirt of cooling of the engine;
– remove a forward protective cover of a gear belt and a cover of a head of cylinders;

Fig. 2.63. Tags for definition of VMT of pistons of the first and fourth cylinders

Fig. 2.25. Check of coincidence of adjusting tags on a pulley of the camshaft and a back protective cover

– install the gear shifting lever in neutral situation and turn clockwise a bent shaft in such situation that the tag on a flywheel (see fig. 2.63) seen in the coupling case hatch was against average division of a scale. At the same time the tag on a camshaft pulley (see fig. 2.25) has to be against an adjusting tag on a back cover of a gear belt;
– turn off a nut of fastening of a tension roller and remove it together with a remote washer; take off a belt from a camshaft pulley;
– holding a camshaft pulley from a provorachivaniye with adaptation 67.7811.9509, turn off a bolt of fastening and remove a pulley with a spline;
– turn off a nut of fastening of a back cover of a gear belt to a head of cylinders;
– turn off bolts of fastening and remove a head of cylinders with laying.
Establish a head of cylinders as it should be, the return to removal, observing the recommendations stated in subsection. "Assembly of the engine". Repeatedly to apply laying between a head and the block of cylinders it is not allowed therefore replace it new.

Fig. 2.61. Bolt of fastening of a head of cylinders

If bolts of fastening of a head of cylinders were extended and their length exceeds 135,5 mm (see fig. 2.61), then replace bolts new. Tighten bolts in four receptions in the order specified in subsection. "Assembly of the engine".
After installation of a head of cylinders adjust a tension of a belt and the drive of an accelerator. Check and if necessary adjust gaps in the valvate mechanism. Check work of a control system of the engine.