2.6.1.1. 4-cylinder petrol and diesel engines

Order of an inhaling of bolts of a head of the block of cylinders


Tags of laying of the block of cylinders

Removal and installation of a head of the block of cylinders is made on the cold engine. The exhaust collector is not removed. The head of the block of cylinders can be removed and established, without removing the engine.

Features of removal and installation of a head of the block of cylinders of the diesel engine are given in subsection 2.6.1.2.

Deficiency of laying of a head of the block of cylinders can be determined by the following signs:

 – loss of power;
 – leak of cooling liquid. White clouds of exhaust gas at the warm engine;
 – oil leak;
 – cooling liquid in engine oil. Level of oil does not decrease, and increases. Gray color of engine oil, vials of foam on the index of level of oil, oil liquid;
 – engine oil in cooling liquid;
 – cooling liquid strongly rages;
 – there is no compression in two next cylinders.

Removal

PERFORMANCE ORDER
1. To disconnect a wire of "weight" (-) from the rechargeable battery.
2. To disconnect wires from a head of the block of cylinders:
      – the potentiometer plug WITH;
      – plug of a potentiometer of a butterfly valve;
      – multicontact connection;
      – idling stabilization valve plug;
      – plug of the valve of start of the cold engine;
      – shtekerny connection a lambda probe under car, on an arm of hinged units on the right;
      – pressure sensor plug on the power steering case if is available;
      – the oil pressure sensor plug on the left face side of a head of cylinders;
      – a weight wire from a cover of a head of cylinders and an inlet collector.
3. To take out an engine plait through an inlet collector, previously having marked with a felt-tip pen the provision of cable clips. To open cable clips or to cut off.
4. To remove all wires from spark plugs.
5. To remove a rope of management of a butterfly valve from a butterfly valve and an emphasis.
6. To remove an air hose in junctions between the air filter and the case of a butterfly valve, to unscrew and take out the valve of stabilization of idling together with an arm, to remove a hose of ventilation of a case of the engine, to remove a hose of stabilization of idling from the case of the air filter and to take out an air hose together with idling stabilization valves.
7. To remove vacuum hoses:
      – on a butterfly valve of heating of reception air, the magnetic valve of a tank with absorbent carbon, the Digifant control unit;
      – on the backpressure valve of the amplifier of brakes.
8. To remove the fuel supply pipeline (black), start of the cold engine and the distributor of fuel, previously having weakened collars. Before removal to enclose rags for collecting the following fuel. To immediately stop up pipelines with suitable traffic jams. For this purpose to insert into hoses, for example, pure screws of suitable diameter.
9. To remove from the fuel distributor the pipeline of return of fuel (blue), previously having weakened a collar.
10. To unscrew a generator support on a head of the block of cylinders.
11. To merge cooling liquid (see subsection 2.16.3).
12. To unscrew unions of cooling liquid on a head of the block of cylinders and, without removing hoses, to put aside.
13. To unscrew a pipe of selection of exhaust gases from an exhaust collector and a head of the block of cylinders.
14. To remove an air hose of heating of reception air from a casing of an exhaust collector.
15. To unscrew a casing of an exhaust collector.
16. To unscrew an inlet collector.
17. To install the car on props.
18. To remove a mudguard of a motor compartment (see subsection 2.4).
19. To unscrew an exhaust pipe from an exhaust collector. To lower slightly system of removal of the fulfilled gases and to suspend on a wire (cm. subsection 2.19.1).
20. To remove the top casing of a gear belt.
21. To weaken a gear belt and to take off it above from a cam-shaft (see subsection 2.5.1.1).
22. To remove a cam-shaft cogwheel (see subsection 2.7).
23. To unscrew a tension roller of a gear belt.
24. To unscrew bolts of fastening of a back casing of a gear belt.
25. To unscrew a cover of a head of blocks of cylinders. To take out a maslootboynik.
26. To remove consolidations of a cover of a head of blocks of cylinders.
27. To unscrew bolts of a head of blocks of cylinders a face many-sided key, for example (HAZET990Slg-12).

Prevention

Bolts need to be weakened as it should be, the return numbering from 10 to 1 (see rice. Order of an inhaling of bolts of a head of the block of cylinders). Before removal the head of the block of cylinders has to be rather cold (room temperature), otherwise the removed head of the block of cylinders can warp.


28. To check whether all pipelines and hoses going to a head of the block of cylinders are removed.
29. To remove a head of the block of cylinders and to establish on two wooden bars. Before removal to wring out a little back casing of a gear belt.
30. To remove laying of a head of the block of cylinders.

Installation

PERFORMANCE ORDER
1. Before installation to clear a suitable shaber the interfaced surfaces of a head of the block of cylinders and the block of cylinders of the laying remains. To pay attention to that dirt did not get to openings of the block of cylinders. To close openings rags.
2. To check lack of oil in openings for screws of fastening of a head of the block of cylinders, if necessary to remove. For this purpose to enter pure rags into openings and to collect oil.

Prevention

If oil remains in openings, then at an inhaling of bolts the block of cylinders can be damaged.


3. To check a steel ruler a head of the block of cylinders for not planeness. Not planeness is checked by a steel ruler and the petal probe on all surface of a head of the block of cylinders. Roughnesses should not exceed 0,1 mm.

Prevention

If sealing surfaces of a head of the block of cylinders are improved, then minimum admissible size on height should not be underestimated (see subsection 2.10.3).


4. Heads of the block of cylinders with gaps between saddles of valves and rings of saddles of valves, and also the first calling of a carving under carving cutting of a spark plug, can be operated further without reduction of service life and a partition if gaps do not exceed the most admissible size and = max of 0,5 mm.
5. To replace laying of a head of the block of cylinders always.
6. The signature of "oben" has to indicate a head of the block of cylinders. To establish laying of a head of the block of cylinders without sealant so that any opening was not closed.
7. To turn the crankshaft for a belt pulley so that all pistons stood approximately on identical height.
8. To establish a head of the block of cylinders, paying attention at the same time to the directing pins of the block of cylinders. If necessary to establish in both external openings from the inlet party the new directing pins. To pay attention to that the cam-shaft was in the provision of VMT for 1 cylinder (see subsection 2.5.2.1).
9. To establish all 10 bolts of a head of the block of cylinders with lining washers and to tighten by hand. To replace bolts of a head of the block of cylinders always.

Prevention

To make an inhaling of bolts of a head of the block of cylinders with big foresight. Before an inhaling of bolts it is necessary to check the accuracy of a dynamometer key. Bolts of a head of the block of cylinders tighten on the cold engine.


10. Bolts of a head of the block of cylinders drag on a dynamometer key in the sequence from 1 to 10 in two steps: in the beginning with effort of 40 N · m, and then – 60 N · m. After that the additional inhaling is made by a rigid key: 1/2 turns (180 °). The additional inhaling 90 °kh2 is allowed (for two times on 90 ° everyone).
11. At an inhaling of bolts of a head of the block of cylinders it is possible to estimate an angle of rotation. To install the key handle along the engine and one movement to turn a key to position of the handle across the engine (1/4 turns, 90 °). To turn a key further – to position of the handle again along the engine.

Prevention

Pulling up of bolts of a head of the block of cylinders on the warm engine within service or after repair is not allowed.

When replacing a head of the block of cylinders with the established cam-shaft, it is necessary to oil after installation of a head of the block of cylinders the surfaces of contact between dish-shaped pushers and a surface of cams.


12. To install the crankshaft in the provision of VMT for 1 cylinder.
13. To screw a back casing of a gear belt.
14. To screw a cogwheel of a cam-shaft and a tension roller of a gear belt.
15. To establish a gear belt.
16. To establish a cover of a head of the block of cylinders with a maslootboynik and new sealants and to tighten the moment 10 N · m.
17. To establish the top casing of a gear belt.
18. To screw a generator support on a head of the block of cylinders.
19. To pull maple a belt (see subsection 2.12.1).
20. To establish an exhaust pipe on an exhaust collector (see subsection 2.19.1).
21. To establish a mudguard of a motor compartment.
22. To remove the car from props.
23. To screw a pipe of selection of exhaust gases on an exhaust collector and a head of the block of cylinders.
24. To screw a casing of an exhaust collector.
25. To put on an air hose of heating of reception air a casing.
26. To establish an air hose between the air filter and the case of a butterfly valve together with the idling stabilization valve.
27. To hang a rope of management of a butterfly valve on a butterfly valve and on an emphasis.
28. To stretch a plait of wires of the engine through an inlet collector.
29. To connect an electrical wiring:
      – the potentiometer plug WITH;
      – plug of a potentiometer of a butterfly valve;
      – multicontact connection of the injecting valves;
      – idling stabilization valve plug;
      – plug of the valve of cold start;
      – shtekerny connection a lambda probe under car, on an arm of hinged units on the right;
      – pressure sensor plug on the steering mechanism of the power steering if is available;
      – the oil pressure sensor plug on the left face side of a head of the block of cylinders;
      – a wire of "weight" from a cover of a head of the block of cylinders to an inlet collector.

Prevention

To fix electrical wires on former places and new cable clips.


30. To put on candle wires.
31. To put on vacuum hoses:
      – on a butterfly valve of heating of reception air, the magnetic valve of a tank with absorbent carbon, the Digifant monitor;
      – on the backpressure valve of the amplifier of brakes.
32. To put on the fuel supply pipeline (black) the valve of start of the cold engine and distribution of fuel, to fix by collars.
33. To put on the pipeline of return of fuel (blue) the distributor of fuel and to fix by a collar.
34. To screw the union of cooling liquid with hoses on a head of the block of cylinders.
35. To fill in cooling liquid. To replace cooling liquid always.
36. To connect a wire of "weight" (-) to the rechargeable battery. To enter an anticreeping code, to program radio stations and to determine time on hours.

Prevention

To connect the rechargeable battery only at the switched-off ignition, otherwise the control unit of system of injection of fuel will fail.


37. To check oil level in the engine. If laying of a head of the block of cylinders was defective, to make replacement of engine oil and the filter.
38. To warm up the engine up to the working temperature. Again to check the level of cooling liquid and tightness of connections.
39. To check the ignition moment (see subsection 2.14.6).
40. To check idling and maintenance WITH (see subsection 2.18.1).
41. To check compression pressure (see subsection 2.11).