At detection of a leak of engine oil or cooling liquid in block head junctions with the block of cylinders remove a head and replace its laying. The leak can arise also owing to a block head buckling because of its overheat.

It will be required to you: the same tools, as for removal of a belt of the drive of the gas-distributing mechanism (see. "Replacement of a belt of the drive of the gas-distributing mechanism and its tension roller"), covers of a head of the block of cylinders (see. "Replacement of laying of a cover of a head of the block of cylinders"), the generator (see. "Removal and installation of the generator"), and also a face head "on 13", "on 16", a key "on 10", passatizh, a dynamometer key.

1. Reduce pressure in a power supply system if you perform work right after a trip (see. "Pressure decrease in a power supply system").

2. Disconnect a wire from the minus plug of the rechargeable battery.

3. Merge cooling liquid (see. "Replacement of cooling liquid").

4. Weaken a collar of fastening of a steam discharge hose, having squeezed its unbent ears, shift a collar on a hose...	5.... also remove a steam discharge hose from a thermostat case branch pipe.

6. Similarly remove the bringing engine cooling system radiator hose from a thermostat case branch pipe.	7. Weaken a collar of fastening of the hose which is taking away cooling liquid to a heater radiator, having squeezed its unbent ears, shift a collar on a hose...

8.... also remove a hose from a thermostat branch pipe.	9. Disconnect a block of a plait of wires from a conclusion of the sensor of temperature of cooling liquid.

10. Turn out a bolt of fastening of an arm of a block of a plait of wires of the sensor of provision of a bent shaft...	11.... also take an arm assembled with a block aside.

12. Disconnect a cable tip from the sector of the drive of a butterfly valve, take a cable braid from an arm and take a cable aside (see. "Adjustment and replacement of a cable of the drive with a butterfly valve").	13. Disconnect a block of wires from the situation sensor a butterfly valve...

14.... from the idling sensor...	15.... from the sensor of absolute pressure in an inlet pipe...

16.... and from nozzles of system of injection of fuel. Weaken an inhaling of a collar and disconnect the airbringing hose from a branch pipe of throttle knot.

17. Remove high-voltage wires (see. "Removal and installation of the coil of ignition").

18. Squeeze a clamp...	19.... disconnect blocks of plaits of wires from ignition coil conclusions...

20.... from the sensor of phases of gas distribution...	21.... also take plaits of wires aside.

22. Separate the plastic collar connecting a fuel stage and a guide of the masloizmeritelny probe.	23. Having hooked a collar the screw-driver, unclench it and disconnect a hose of supply of fuel from a fuel stage.

24. Weaken a collar of fastening of a vacuum hose to a receiver, having squeezed its unbent ears, shift a collar on a hose...	25.... also disconnect a hose from a receiver.

26. Weaken an inhaling of a collar of a hose of ventilation of a case...	27.... also disconnect a hose from a receiver branch pipe.

28. Turn out two bolts of fastening of an inlet pipe to the supporting arm.	29. Turn off three nuts of fastening of a reception pipe to a final collector and lower a reception pipe down.

30. Turn out ten bolts of fastening of a head of the block of cylinders to the block in the sequence shown in fig. 5.3 take bolts...

Fig. 5.3. Sequence of weakening of an inhaling of bolts of fastening of a head of the block of cylinders

Prevention Bolts of fastening of a head of the block of cylinders can be turned off only on the cold engine.

31.... remove a head of the block of cylinders...

Good advice It is more convenient to remove a head of the block of cylinders with the assistant as it is quite heavy.

32.... and its laying.

33. Clear privalochny surfaces of a head of the block and block of cylinders (surfaces have to be dry and pure)...

34.... also remove oil from carving openings in the block of cylinders.

Prevention If not to remove oil from carving openings under bolts of fastening of a head of the block, then at an inhaling of bolts in the block of cylinders there can be cracks as the oil which is not compressed.

35. Install new laying on the block of cylinders, having centered it on two directing plugs.

36. Establish a head of the block of cylinders in the sequence, the return to removal.

Fig. 5.4. Sequence of an inhaling of bolts of fastening of a head of the block of cylinders

37. Tighten bolts on the cold engine in the sequence shown in fig. 5.4 in three stages: the 1st — tighten bolts the moment of 30 N · m (3 kgfs · l); the 2nd — tighten bolts on a corner 90 °; the 3rd — finally wrap bolts on a corner 90 °.

38. Establish all details and knots as it should be, the return to removal.

39. Adjust a tension of a belt of the drive of the gas-distributing mechanism (see. "Check and adjustment of a tension of a belt of the drive of the gas-distributing mechanism").

40. Adjust a tension of belts of the drive of the generator and compressor of the conditioner (see. "Check of a tension of a belt of the drive of the generator and compressor of the conditioner"), and also the pump of the hydraulic booster of steering (see. "Check and adjustment of a tension of a belt of the drive of the pump of the hydraulic booster of steering").

41. Adjust a cable of the drive of a butterfly valve (see. "Adjustment and replacement of a cable of the drive of a butterfly valve").

42. Fill in cooling liquid (see. "Replacement of cooling liquid").