9.1.10. Carburetor

Features of the device

Fig. 9.17. Appearance of the carburetor 21083-1107010-31: 1-leading lever of the drive of the second camera; 2 – adjusting screw of amount of mix of idling; 3 – block of heating of the carburetor; 4 – branch pipe of ventilation of a case of the engine; 5 – lever of the drive of the accelerating pump; 6 – electromagnetic locking valve; 7 – lever of the air gate; 8 – carburetor cover; 9 – bolt of fastening of the liquid camera; 10 – case of the liquid camera; 11 – carburetor case; 12 – lever of a butterfly valve of the second camera; 13 – sector of a control lever butterfly valves; And — tags for the correct installation of a bimetallic spring of the starting arrangement

On the car of the basic VAZ-2115 model with contactless system of ignition of gas mixture the carburetor 21083-1107010-31 (fig. 9.17) of emulsion type, two-chamber, with consecutive opening of butterfly valves is installed. The carburetor has the balanced float-operated camera, system of a suction of crankcase gases for a butterfly valve, heating of a zone of a butterfly valve of the first camera.
In the carburetor there are two main dosing systems of the first and second cameras, system of idling of the first camera with transitional system, transitional system of the second camera, the economizer of the power modes, эконостат, the diaphragm accelerating pump, the semi-automatic starting arrangement. On compulsory single to the course the economizer of compulsory idling turns on. On the cars having fuel consumption sensor the carburetor 2114-1107010-31 different from the carburetor of a basic complete set is installed by lack of a branch pipe of discharge of fuel.
Tarirovochny data of the carburetor are provided in table 9.1.

Table 9.1   Tarirovochny data of the carburetor 21083-1107010-31
Parameters
First camera
Second camera
Diameter of the mixing camera, mm
32
32

23
Diameter of the diffuser, mm
21
The main dosing system:
marking * fuel jet
marking of an air jet

95
155

100
125
Type of an emulsion tube
23
ZC
System of idling and transitional systems:
marking of a fuel jet
marking of an air jet

41+3
170

50
120
Ekonostat: conditional expense ** fuel jet
                -
70
Economizer of the power modes:
marking of a fuel jet
effort of compression of a spring with a length of 9,5 mm, N
  40
1,5±


10%
Accelerating pump:
marking of a spray
marking of a cam
supply of fuel for 10 cycles, cm3

35
7
11,5

  40
  -
±1,75
Starting gaps:
air gate (gap And), mm
butterfly valve (gap of B), mm

2,5 +0,2
1,1+0,05

-
-
Diameter of an opening of the needle valve, mm
                                  18
Diameter of an opening of restart-up of fuel in a tank, mm
0,7
Diameter of an opening of ventilation of a case of the engine, mm
1,5
Fuel level in the float-operated camera, mm
22,5
Diameter of balancing openings of the float-operated camera, mm
4
4

* Marking of jets is defined by an expense which is measured by means of micromeasuring instruments. Setup of micromeasuring instruments is carried out on reference jets.
** The conditional expense of a fuel jet is determined by a reference jet by a special technique. In use is not subject to control.

The main dosing system

Fig. 9.18. The scheme of the main dosing systems: 1 – the main air jets with emulsion tubes; 2 – sprays of the first and second cameras; 3 – balancing opening; 4 – fuel filter; 5 – a branch pipe with the calibrated opening of discharge of a part of fuel in the fuel tank; 6 – needle valve; 7 – float; 8 – butterfly valve of the second camera; 9 – main fuel jets; 10 – butterfly valve of the first camera

Fuel via the mesh filter 4 (fig. 9.18) and the needle valve 6 moves in the float-operated camera. From the float-operated camera fuel comes through the main fuel jets 9 to emulsion wells and mixes up with the air which is coming out openings of emulsion tubes 1 which are made with the main air jets at the same time. Through sprays 2 the fuel-air emulsion gets to small and big diffusers of the carburetor.
Butterfly valves 8 and 10 are connected among themselves in such a way that the second camera begins to open when the first is already open at 2/3 sizes.
System of idling

Fig. 9.19. Scheme of system of idling and transitional systems: 1 – electromagnetic locking valve; 2 – fuel jet of idling; 3 – air jet of idling; 4 – fuel jet of transitional system of the second camera; 5 – air jet of transitional system of the second camera; 6 – exhaust outlet of transitional system of the second camera; 7 – main fuel jets; 8 – crack of transitional system of the first camera; 9 – adjusting screw of quality (structure) of mix

Takes away fuel from an emulsion well after the main fuel jet of 7 (fig. 9.19). Fuel is brought to a fuel jet 2 with the electromagnetic locking valve 1, at the exit from a jet mixes up with the air arriving from the flowing channel and from the extending part of the diffuser (for ensuring normal operation of the carburetor upon transition to the idling mode). The emulsion leaves under a butterfly valve through the opening regulated by the screw 9 of content of carbon monoxide (SO) in the fulfilled gases.
Transitional systems
When opening butterfly valves of the carburetor before inclusion of the main dosing systems toplivnovozdushny mix arrives:
– in the first mixing camera through a jet 2 idlings and the vertical crack of the 8th transitional system which is at the level of an edge of a butterfly valve in a closed position;
– in the second mixing camera through the exhaust outlet 6 which is edges of a butterfly valve in a closed position are slightly higher. Fuel arrives from a jet 4 through a tube, mixes up with the air from a jet 5 arriving via the flowing channel.
Economizer of the power modes

Fig. 9.20. Scheme of an ekonostat and economizer of the power modes: 1 – butterfly valve of the second camera; 2 – main fuel jet of the second camera; 3 – a fuel jet of an ekonostat with a tube; 4 – main fuel jet of the first camera; 5 – butterfly valve of the first camera; 6 – channel of transfer of depression; 7 – economizer diaphragm; 8 – ball valve; 9 – fuel jet of the economizer; 10 – fuel channel; 11 – air gate; 12 – main air jets; 13 – the injecting tube of an ekonostat

Works at a certain depression behind a butterfly valve of 5 (fig. 9.20). Fuel gets from the float-operated camera via the ball valve 8. The valve is closed while the diaphragm is kept by depression in an inlet pipe. At considerable opening of a butterfly valve depression falls also a spring of a diaphragm a little 7 opens the valve. The fuel passing through a jet of the 9th economizer is added to fuel which passes through the main fuel jet 4, enriching gas mixture.
Ekonostat
Works at full loading of the engine at the high-speed modes close to maximum, at completely open butterfly valves. Fuel from the float-operated camera through a jet 3 comes to a fuel tube and is exhausted through the injecting tube 13 in the second mixing camera, enriching gas mixture.
Accelerating pump

Fig. 9.21. Scheme of the accelerating pump: 1 – sprays; 2 – ball valve of supply of fuel; 3 – pump diaphragm; 4 – pusher; 5 – drive lever; 6 – pump drive cam; 7 – butterfly valve of the first camera; 8 – backpressure ball valve; 9 – butterfly valve of the second camera

Diaphragm, with the mechanical drive from a cam of 6 (fig. 9.21) on an axis of a butterfly valve of the first camera. At the closed butterfly valve the spring takes away a diaphragm 3 back that leads to filling of a cavity of the pump with fuel via the ball valve 8. When opening a butterfly valve the cam affects the lever 5, and the diaphragm 3 forces fuel via the ball valve 2 and sprays 1 in mixing cameras of the carburetor, enriching gas mixture.
Productivity of the pump is not regulated and depends only on a cam profile.
Semi-automatic starting arrangement

Fig. 9.22. Scheme of the semi-automatic starting arrangement of the carburetor 21083-1107010-31: 1 – butterfly valve of the first camera; 2 – lever of the drive of the second camera; 3 – diaphragm spring; 4 – diaphragm cavity; 5 – the air channel from zadrosselny space of the carburetor; 6 – diaphragm of the starting arrangement; 7 – air gate; 8 – draft of the drive of the air gate; 9 – axis of the starting arrangement; 10 – cam; 11 – adjusting screw of a starting gap of the air gate; 12 – rod of a diaphragm of the starting arrangement; 13 – hook of blocking of the second camera; 14 – emphasis lever; 15 – adjusting screw of a priotkryvaniye of a butterfly valve of the first camera; 16 – lever of a priotkryvaniye of a butterfly valve; 17 – draft of a priotkryvaniye of a butterfly valve; 18 – control lever butterfly valves; And — a starting gap at the air gate; B — a starting gap at a butterfly valve

Improves driving and reduces toxicity of the fulfilled gases in the modes of start and warming up of the engine (fig. 9.22).
At start of the cold engine the bimetallic spring of the starting arrangement (in fig. 9.22 it is not shown) by means of levers and draft 8 holds the air gate 7 of closed. After start of the engine the gate by means of a diaphragm 6 is slightly opened on a gap And which is regulated by the screw 11 of a rod of the 12th diaphragm of the 6th starting arrangement.

Fig. 9.23. Scheme of connection of hoses of the semi-automatic starting arrangement of the carburetor 21083-1107010-31: 1 – temperature regulator; 2 – thermopower element of a temperature regulator; 3 – air gate; 4 – liquid camera; 5 – carburetor; 6 – butterfly valve of the second camera; 7 – engine; 8 – inlet pipe; 9 – butterfly valve of the first camera; 10 – block of heating of the carburetor; 11 – hoses of cooling liquid; 12 – air filter

In process of warming up of the engine the cooling liquid circulating via the liquid camera 4 (fig. 9.23) of the starting arrangement also the bimetallic spring which provides opening of the air gate via levers of the drive of the starting arrangement and draft 8 heats up (see fig. 9.22). On the heated-up engine the air gate is opened by a bimetallic spring completely.
Economizer of compulsory idling
Disconnects system of idling on compulsory single to the course (during braking of the car the engine, at the movement under a bias, at gear shifting), cutting fuel consumption and emission of hydrocarbons in the atmosphere.
On the mode of compulsory idling with a frequency of rotation of a bent shaft more than 2100 min.-1 and at the trailer switch of the carburetor closed on "weight" (the pedal is released) the locking electromagnetic valve is switched off, supply of fuel is interrupted.
At decrease in frequency of rotation of a bent shaft on compulsory single to the course up to 1900 min.-1 the control unit turns on the electromagnetic locking valve (though the trailer switch and is switched on on "weight"), supply of fuel through an idling jet begins, the engine gradually comes to the idling mode.

Removal and installation of the carburetor on the car

Fig. 9.24. Drive of control of the carburetor: 1 – pedal of management of butterfly valves; 2 – returnable spring; 3 – laying of an emphasis of a pedal; 4 – arm; 5 – plug; 6 – lock bracket; 7 – cable tip; 8 – cable cover; 9 – an arm of the regulating tip; 10 – adjusting nuts; 11 – the sector with a control lever butterfly valves; 12 – returnable spring

Carry out removal and installation only on the cold engine. For this purpose remove the air filter. Disconnect from sector 11 (fig. 9.24) of a control lever butterfly valves a cable and a returnable spring 12. Turn out the screw of fastening and remove the block 3 (see fig. 9.17) heating of the carburetor.
Disconnect electric wires of the economizer of compulsory idling and hoses of the semi-automatic starting arrangement from the carburetor.
Turn off nuts of fastening of the carburetor, remove the carburetor and close a cap an entrance opening of an inlet pipe.
Carry out installation of the carburetor upside-down. Before installation check a condition of a pro-rate of the carburetor and the planes of connection of an inlet pipe with the carburetor.
Fastening and pulling up of nuts of fastening of the heated carburetor is not allowed.
After installation adjust the drive of control of the carburetor, and also idling of the engine.
The drive of control of the carburetor has to work without jammings.

Dismantling of the carburetor
Turn out screws of fastening of a cover of the carburetor, disconnect draft 17 (see fig. 9.22) a priotkryvaniye of a butterfly valve of the first camera and carefully uncover not to damage laying, a float and tubes of an ekonostat and transitional system of the second camera.
Sort a carburetor cover.

Fig. 9.25. Carburetor 21083-1107010-31 cover details: 1 – float axis; 2 – needle valve; 3 – float; 4 – laying of a cover of the carburetor; 5 – cover of the starting arrangement; 6 – screw; 7 – diaphragm of the starting arrangement; 8 – laying; 9 – lever of the air gate; 10 – fuel jet of idling; 11 – electromagnetic locking valve; 12 – fuel supply branch pipe; 13 – carburetor cover; 14 – fuel filter; 15 – the case of the semi-automatic starting arrangement assembled with drive levers; 16 – adjusting screws of a starting gap of the air gate and priotkryvaniye of a butterfly valve of the first camera; 17 – collar of fastening of the case of a bimetallic spring; 18 – liquid camera; 19 – the case with a bimetallic spring assembled; 20 – screen of a bimetallic spring

Mandrel carefully push out axis 1 (fig. 9.25) of floats 3 of racks and, without injuring uvulas of floats, remove them.
Remove laying 4 covers, turn out a saddle of the needle valve 2, turn out a branch pipe of the 12th supply of fuel and take out the fuel filter 14.
Turn out the case of a fuel jet of the 10th idling with the electromagnetic locking valve 11 and take out a jet. Turn out screws of fastening and uncover the 5th semi-automatic starting arrangement.
Remove a lock washer and disconnect draft from the lever 9 of the air gate.
Turn out screws of fastening and remove the case 15 of the semi-automatic starting arrangement assembled with the case 19 of a bimetallic spring, the liquid camera 18 and levers of the drive.

Fig. 9.26. Carburetor case details: 1 – adjusting screw of amount of mix of idling; 2 – electric wire of the limit switch of the economizer of compulsory idling; 3 – block of heating of the carburetor; 4 – diaphragm of the accelerating pump; 5 – cover of the accelerating pump; 6 – lever of the drive of the accelerating pump; 7 – cam of the drive of the accelerating pump; 8 – cover of the economizer of the power modes; 9 – diaphragm of the economizer of the power modes; 10 – fuel jet of the economizer of the power modes; 11 – valve of the economizer of the power modes; 12 – sprays of the accelerating pump with the fuel supply valve; 13 – sprays of the main dosing systems; 14 – the main air jets with emulsion tubes; 15 – main fuel jets; 16 – carburetor case; 17 – adjusting screw of a butterfly valve; 18 – stopper of the adjusting screw; 19 – stopper cap; 20 – butterfly valve of the second camera; 21 – axis of a butterfly valve of the second camera; 22 – draft of a priotkryvaniye of a butterfly valve of the first camera; 23 – the sector with a control lever butterfly valves; 24 – returnable spring of a butterfly valve of the first camera; 25 – the conducted lever of the drive of a butterfly valve of the second camera; 26 – leading lever of the drive of a butterfly valve of the second camera; 27 – spring of levers of the drive of a butterfly valve of the second camera; 28 – butterfly valve of the first camera; 29 – returnable spring of a butterfly valve of the second camera; 30 – cap of the adjusting screw of quality (structure) of mix of idling; 31 – axis of a butterfly valve of the first camera; 32 – adjusting screw of quality (structure) of mix of idling

Disassemble the case of the carburetor (fig. 9.26) for what execute the following operations.

       PREVENTION
Dismantling of the semi-automatic starting arrangement is not recommended. It is strictly forbidden to turn a bimetallic spring of the starting arrangement as in the direction of a navivka, and in the opposite direction. Non-compliance with this requirement will lead to damage of a bimetallic spring and failure in the functioning of the starting arrangement of the carburetor.

By means of the screw-driver remove an arm of a returnable spring and sector 23, having turned out the fastening screw to a control lever butterfly valves.
Turn out from the lever 18 (see fig. 9.22) a draft axis 17 priotkryvaniye of a butterfly valve of the first camera and disconnect it from the lever.
Uncover 5 (see fig. 9.26) the accelerating pump with the lever 6 and a diaphragm 4.
Take out sprays 12 of the accelerating pump and sprays 13 of the first and second cameras. Take out sprays 12 only for the case of sprays.
Turn off a nut of an axis of a butterfly valve of the first camera, remove a cam of the 7th drive of the accelerating pump and a washer.
Turn out the fastening screw, remove an electric wire from the adjusting screw of 1 amount of mix of idling and if necessary turn out the screw 1.
Take out a corkscrew a plastic cap 30 and turn out the adjusting screw 32 qualities (structure) of mix of idling.
Uncover the 8th economizer of the power modes, a diaphragm 9 and a spring.
Turn out a fuel jet of the 10th economizer of the power modes, the main air jets 14 with emulsion tubes and the main fuel jets of 15 main dosing systems.
If necessary turn out screws of fastening of a butterfly valve 28 first cameras, remove the gate and take out an axis assembled with drive levers. Having removed a lock washer and having turned out fastening screws, remove a butterfly valve 20 second cameras and take out a gate axis.

Cleaning and check of technical condition of details of the carburetor
Fuel filter
Wash out the filter in gasoline and blow compressed air. Check a condition of the filter. If the filter or a branch pipe of a supply of fuel are damaged, replace them new.
Float-operated mechanism
Wash out details in gasoline, check a state. Floats should not have damages. On the condensing surface of the needle valve and its saddle the damages breaking tightness of the valve are not allowed. The valve has to move freely in the nest, and the ball should not hang. The weight of floats should not be more than 6,23 g. Replace faulty details new.
Carburetor cover
Clear a cover and all openings and channels of dirt and oil. Wash out a cover in acetone or gasoline and blow compressed air. Examine the condensing cover surfaces. If there are damages, replace a cover new.
Semi-automatic starting arrangement
Not to break lubricant qualities of plugs, axes and levers, it is forbidden to wash out the case of the device and its detail.
Jets and emulsion tubes
Clear jets and emulsion tubes of dirt and resinous connections, wash out them acetone or gasoline and blow compressed air.
It is impossible to clear jets the metal tool or a wire, and also to wipe jets and other details of the carburetor with cotton wool, fabric or rags as fibers can litter a toplivoemulsionny path. At a strong contamination it is possible to clear jets the needle from a soft tree moistened with acetone.
Carburetor case
Clear the case of dirt and oil. Wash out its channels acetone or gasoline and blow compressed air. If necessary clear channels and emulsion tubes special development. Examine the condensing surfaces of the case, at their damages or deformations replace the case new.
Accelerating pump
Clear pump details, wash out them in gasoline and blow compressed air. Check ease of movement of a ball in a spray and the movement of mobile elements of the pump (the lever, diaphragm details). Jammings are not allowed. The diaphragm has to be whole, without damages. Check a condition of the condensing surfaces and laying. Replace the damaged details new.
Economizer of the power modes
The diaphragm has to be whole and without damages. With a full length of a pusher of a diaphragm (including a head), smaller 6,0 mm, replace a diaphragm assembled with a pusher.
Assembly of the carburetor
Collect the carburetor in the sequence, the return dismantling. At the same time pay attention to the next moments.
The float has to turn freely on the axis, without touching camera walls.
The needle valve has to slide freely in the nest, without distortions and jammings, the moment of an inhaling of a saddle of the needle valve has to be 14,7 N of the WC (1,5 kgfs of the H · м).
The moment of an inhaling of the electromagnetic locking valve has to be 3,68 N of the WC (0,4 kgfs of the H · м).
That at assembly not to mix in places jets, pay attention to marking of jets and at their installation be guided by table 9.1.
At assembly of the accelerating pump acquire screws of fastening of a cover, press the drive lever against the stop, wrap screws and release the lever.
At a zavertyvaniye of screws of fastening of butterfly valves to a raschekanta on a contour screws on the special adaptation excluding deformation of axes of gates.
Adjustments and checks of the carburetor
Tightness of the needle valve is checked at the stand which provides supply of fuel to the carburetor under pressure of 30 kPa (3 m of water column). After installation of level of fuel in a control test tube of the stand its falling is not allowed during 10–15 pages. If fuel level in a test tube goes down, then it indicates leak of fuel via the needle valve.
In case of leak of fuel replace the needle valve.
Installation of level of fuel in the float-operated camera
Level of fuel, necessary for normal operation of the carburetor, is provided with the correct installation of serviceable elements of the locking device.

Fig. 9.27. Installation of level of fuel in the float-operated camera: 1 – float; 2 – case of a bimetallic spring; 3 – laying; 4 – caliber for verification of the provision of floats; 5 – needle valve

Check correctness of installation of a float of 1 (fig. 9.27) in caliber 4 for what establish it perpendicular to a cover 2 which you hold horizontally floats up. Between caliber on a contour and floats there has to be a gap no more than 1 mm.
If necessary adjust a podgibaniye of a uvula and levers of a float. The basic surface of a uvula has to be perpendicular axes of the needle valve 5 and should not have dents and забоин.
Adjustment of the drive of the carburetor. At completely pressed pedal 1 (see fig. 9.24) managements of butterfly valves the butterfly valve of the second camera has to be completely open and sector 11 should not have the additional course. At the released pedal butterfly valves of both cameras have to be completely closed. If there is no it, adjust the provision of a pedal and a butterfly valve adjusting nuts 10 on a forward tip of a cable of the drive.

Fig. 9.28. Check of installation of a bimetallic spring of the semi-automatic starting arrangement of the carburetor: 1 – case of the starting arrangement; 2 – case of a bimetallic spring; 3 – case of the liquid camera; 4 – screws of fastening of the case of a bimetallic spring; 5 – bolt of fastening of the liquid camera

Check of operation of the semi-automatic starting arrangement of the carburetor. Check correctness of installation of a bimetallic spring of the starting arrangement for what visually define combination of three tags (in fig. 9.28 of a tag are shown by shooters): on the case of 1 starting arrangement, the case 2 of a bimetallic spring and the case 3 of the liquid camera. At discrepancy of tags weaken screws 4 fastenings of the case 2, turn it before combination with a tag on the case 1 and wrap screws. Weaken a bolt 5, turn the case 3 before combination of tags and fix a bolt.
Start cold (temperature of cooling liquid of 15-25 °C) the engine and check through 15–20 about the frequency of rotation of a bent shaft of the engine which has to be (2400±200) min.-1. If the frequency of rotation does not correspond to this, adjust a starting gap of B at a butterfly valve of the first camera up to the size (1,1±0,05) mm (adjustment is given below in subsection. "Adjustments of starting gaps").
Adjustments of starting gaps.
Carry out adjustment on the cold engine when the air gate is covered with the starting arrangement. Remove the air filter and check a starting gap And (fig. 9.22) of the air gate 7. If the gap But does not correspond to the size (2,5 ±0,2 mm), remove a stopper of the adjusting screw 11 and adjust this gap this screw.
Adjustment of a starting gap of B at a butterfly valve of the first camera needs to be carried out on the removed carburetor.
Close a butterfly valve of 1 first camera. The screw-driver turn a cam 10 counterclockwise and establish a lever 14 emphasis on the greatest step on radius. The screw 15 adjust a gap of B at a butterfly valve, equal (1,1±0,05) mm.
Deliver the removed knots and details, start the engine, check through 15–20 from later start the frequency of rotation of a bent shaft of the cold engine which has to be equal 2400 ±200 min.-1.
Frequency of rotation of a bent shaft of the heated-up engine idling has to be equal 750–800 min.-1.
Adjustment of idling of the engine

Fig. 9.29. Screws of adjustment of idling of the engine: 1 – adjusting screw of amount of mix of idling; 2 – adjusting screw of quality (structure) of mix of idling; 3 – sealing ring; 4 – cap of the adjusting screw

Adjustment is provided with the adjusting screw 2 (fig. 9.29) of quality (structure) of mix and the adjusting screw of 1 amount of mix. The adjusting screw 2 is closed by a cap 4. For access to the screw it is necessary to take out a corkscrew a cap.
Adjustment of idling needs to be carried out on the heated-up engine (temperature of cooling liquid of 90-95 °C), with the adjusted gaps in the gas distribution mechanism, with correctly adjusted ignition advancing corner.
Establish by the adjusting screw of 1 amount of mix on a stand tachometer the frequency of rotation of a bent shaft of the engine within 750–800 min.-1.
The adjusting screw 2 qualities (structure) of mix achieve the content of carbon monoxide (SO) in the fulfilled gases within (1±0,3) % at this position of the screw 1 [contents WITH is given to 20 °C and 101,3 kPa (760 mm of mercury.)].
Upon termination of adjustment sharply press a pedal of the drive of butterfly valves and release it, the engine has to increase trouble-free the frequency of rotation of a bent shaft, and at its reduction — not to decay. In case of an engine stop the screw 1 increase the frequency of rotation of a bent shaft within 750–800 min.-1.
Establish in an opening for the adjusting screw 2 qualities of mix a new plastic cap 4.
Production of the fulfilled gases

Fig. 9.30. System of production of the fulfilled gases: 1 – arm of fastening of a reception pipe; 2 – laying; 3 – arm bracket; 4 – additional muffler; 5 – pillows of a suspension bracket of mufflers; 6 – main muffler; 7 – collars; 8 – reception pipe of mufflers

The fulfilled gases are taken away from the engine through a final collector, a reception pipe 8 (fig. 9.30), then via the additional muffler 4 and the main muffler 6.
Between flanges of a collector and a reception pipe sealing laying 2 is established. Pipes of mufflers connect among themselves the razvaltsovanny ends by means of collars 7 to conical rings.
The reception pipe 8 fastens nuts on hairpins of a final collector and in addition to an arm of 1 engine. Under fastening nuts to a collector lock plates are put. Nuts and sealing laying of 2-times use.
Mufflers together with pipes form non-demountable knots and at repair, in case of their exit out of operation have to be replaced with new.