Adjust the idle speed to 151. Recommendations for repairing the K151 carburetor.

Irzha

Carburetor elements
1 - screw plug of the float axis;
2 - important on the axis of the wind valve;
3 - threaded plug of the firing nozzle of the secondary chamber transition system;
4 - fitting for vacuum selection at the vacuum regulator of the ignition distributor;
5 – fitting for the selection of pressure to the valve of the EPH system;
6 – fitting for the crankcase ventilation system;
7 - combustion filter housing with inlet and bypass fittings;
8 - screw fastening the filter housing;
9 - vacuum fitting with a recirculation valve for processed gases;
10 - threaded plug of the emulsion jet of the idle system;
11 - pin fastening the wind filter housing;
12 - threaded plug from the floater chamber;
13 - fitting for supplying pressure to the EPHH valve;
14 - gwent for adjusting the stock level at idle speed (gwent “yakosti”);
15 - screw stop for the damper of the primary chamber;
16, 22 - microperemixer of the EPGS system;
17 - screw for adjusting the frequency of the rotation of the oscillating shaft at idle speed (gwent “kolkosti”);
18 - double-shouldered screw of the launcher;
19 - importance of the launcher;
20 - important on the axis of the wind valve;
21 - thrust to the wind damper drive;
23 - freewheel tension spring to control the throttle valves;
24 - the overhead cam is connected to the starting device;
25 - adjusting screw for the thrust position of the wind damper drive;
26 - the valve is important for the throttle valve of the other chamber that opens;
27 - closes the throttle valve of the other chamber;
28 - cam of the starting device;
29 - screw stop for the damper of the other chamber;
30 - double-sided fitting;
31 - screw fastening the cam of the stern pump (optional);

32 - flame fitting.

Carburetor diagram
1 – cap;
2 - floater;
3 – blowing jet of the transition system of another chamber;
4 – firing nozzle of the transition system of another chamber;
5 - threaded screw trimach of the econostat;
6 – main jet of another chamber;
7 - rozpilyuvach econostat;
8 - emulsion tube of the head dispensing system of another chamber;
9 - small diffuser of the first chamber with a saw;
10 - trimach of the bilge pump with a discharge valve;
11* - dispensing of the peristoral pump;
12 - damper is damaged;
14 – head jet of the first chamber;
15 - emulsion tube of the head dispensing system of the first chamber;
16 - block of combustion and air jets idling with an emulsion tube;
17 – emulsion jet of the idle system;
18 - another idle jet;
19 - adjustable head on the nozzle of the drainage channel of the stern pump;
20 - between the movements of the wetted valve of the stern pump;
21 - carburetor body;
22 – bypass (drainage) jet of the stern pump;
23 - ball of the wetted valve of the stern pump;
24 - spring overloading the diaphragm of the stern pump;
25 - diaphragm of the squamous pump;
26 - diaphragm cover of the squamous pump;
27 - important for the drive of the stern pump;
28 – head firing jet of the first chamber;
29 – valve fitting EPХХ;
30 – diaphragm of the ЕПХХ valve;
31 - shut-off valve ЕПХХ;
32 - plug-in plastic boundary for turning the screw “yakosti”;
33 - gvint regulation of the warehouse sumishi (“gvint yakosti”) at idle speed;
34 - dismantled diaphragm hole near the EPXX valve body;
35 - body of the Primus idle economizer (Vuzol idle);
36 – idle system valve seat;
37 - screw for adjusting the frequency of rotation of the drive shaft at idle speed;
38 - laying out the idle unit;
39 - additional screw for adjusting the amount of pressure on the idle head that falls (only on early modifications of carburetors);
40 - transition hole of the idle system;
41 - throttle valve of the first chamber;
42 - cam for the stern pump drive;
43 - roller of the stern pump;
44 - input window to the wind channel of the idle system;
45 - throttle valve of another chamber;
46 - thermal insulation lining for the carburetor body;
47 - throttle body housing;
48 - fitting for selecting the release of the electromagnetic valve EPХH control;
49 - fitting for vacuum selection to the vacuum regulator for ignition advance;
50 – main firing jet of another chamber;
51 - fitting for the selection of rarefaction to the gas recirculation valve, which was used;
52 - silovy lantsyug block keruvannya EPKH;
53 - lance microperemixer of the EPХH system;
54 – filter on the ventilation fitting of the electromagnetic valve EPХH control;
55 – electromagnetic valve of the ЕПХХ system;
56 - screw fastening the fuel filter housing;
57 - dust filter;
58 – firing fitting;
59 - plug on the float chamber station;
60 - shut-off valve for the floater mechanism;
61 - locking head earrings;
62 - float tongue.

* For carburetors installed on the ZMZ-402 engine, the sprayer has one nozzle, directly into the first chamber.
Features of the design

K-151 carburetors are devices for precise dosing of fuel in the air flow, creation of fire and flow of the fuel mixture and regulation of the supply to the engine.

The carburetor has two extended vertical channels for the passage of the air; a rotary throttle valve is installed in the lower part of the skin.

The skin from the channels is called the carburetor chamber.

There are two fragments of such channels-chambers, and the drive of the throttle valves is damped so that when you press the accelerator pedal, one valve opens, and then another valve, this type of carburetor is called double-chamber krittyam cameras.

The chamber in which the throttle valve opens first is called the first, the other is called the other.

In the middle part of the skin ducts of the head there are cone-like sound-diffusers, which help to create a diffusion in the sweat, which is necessary for pouring out the burning liquid from a special container, What is in the carburetor body - the float chamber.
The flow of fuel in the float chamber, which is necessary for the normal operation of the carburetor, is maintained by a steady (more precisely, even more stable) mechanism with a floater and a locking head.
The principle of the float mechanism of the K-151 carburetor is similar to the design of all other commercial carburetors: there are, together with the head and the float, placements in the carburetor body and accessible for control after znyatya krishki, without destroying your robot.

The carburetor is made up of three main parts:

Upper - covers with a flange and studs for fastening the wind filter, with a ventilation device for the floater chamber and parts of the starting device.
These screws secure the cover to the carburetor body through a cardboard gasket;
middle - carburetor housings with a float chamber and a float mechanism, a fire fitting and fire water dosing systems;
idle system;
transition system of another chamber;
econostat;
bilge pump;
launch device;
economizer valve for switching off the fuel supply in the primus idle mode;
Primus crankcase ventilation system;
ventilation system for the floating chamber;
mechanism of cervical throttle valves.

Idle system - with speed regulation and storage (autonomous idle system).

The other carburetor chamber has a transition system with a fuel supply directly behind the floater chamber.

The system enters the robot at the moment the throttle valve of the other chamber opens.

Diaphragm type accelerator pump.

To increase the amount of heat in the case of constant rotation, an econostat is installed in another chamber.
The starting device is of an automatic type, consisting of a pneumatic corrector, an important system and a wind damper, which is closed before starting a cold engine with water behind an additional manual drive.

At the moment of starting the engine, the pneumatic corrector, vikoristaya and the pressure that flows under the carburetor, automatically opens the air valve to the required section, ensuring the stability of the engine during warm-up.

UVAGA

When retracting the handle, the valve must be pressed on the accelerator pedal.

Carburetors K-151D and K-151T are divided into carburetors K-151 by a fuel pump with two nozzles and pass-through cuts of elements that dose.

The system for connecting the fire supply of the K-151D carburetor consists of an electromagnetic valve, coated with a fire control controller, and a primus idle economizer (EPCG).

The EPHH is located on the carburetor, the solenoid valve and the combustion controller are under the hood, on the front panel of the car. The ignition controller controls the electromagnetic valve depending on the frequency of rotation of the engine crankshaft and the pressure level in the intake manifold.
The fire supply connection system operates in this way. When the pedal is released to drive the throttle valves and the rotation frequency of the engine shaft is more than 1650 hv-1, the controller does not supply voltage to the solenoid valve, as a result, through the channels of the solenoid valve it goes back to the EPH, the valve of which blocks the idle channel.
Specifications of carburetors K-151 (ZMZ-402), K-151D (ZMZ-406), K-151T (UMZ-4215) : 76
About the book: Kerivnitstvo Vidannya 2003 rock.
Book format: pdf file in zip archive
Storinok Language

Carburetor K-151.

Vlashtuvannya, regulation, repair.

The book examines the peculiarities of the design and operation of automobile carburetors of the K-151 family manufactured by VAT PEKAR.

The main characteristics and parameters of components and carburetor systems are outlined.

The specifics of operation and technical maintenance of carburetors and associated vehicle systems - economizer, primus idle and reduced toxicity - are presented.

Recommendations are made to identify and eliminate characteristic malfunctions.

Instructions have been made for disassembling, assembling, diagnosing, adjusting and repairing components and carburetor systems.

The colorful illustrations complement the beautiful, colorful material.

All modifications of the carburetors of this family are of the same type: double-chamber dual-fuel with a falling flow of fuel mixture and pneumatic galvanization, a balanced float chamber, elements of a closed card ventilation system era and the latest findings of throttle valves.

The smells are divided mainly by calibration data and sets of accessories and additional elements.

Carburetors of the K-151 series are equipped with a single-section float chamber with an empty brass floater;

autonomous idle system (ASXX);

head dosing systems in the primary and secondary chambers, a transition system in the secondary chamber;

systems for selecting ceramic rarefaction for the vacuum corrector of the ignition distributor and the gas recirculation valve (not on all modifications);

Modification K-151І is divided into a family of heavy-duty engines ZMZ-410.10 with a working volume of 2.9 liters.

cars Volga GAZ-31029 and Gazelle GAZ-3302.

It differs from the base carburetor by the diameter of the large diffuser of the secondary chamber, the flow rate of the emulsion jet of the idle system and the supply of the accelerator pump.

For the family of new generation engines, the ZMZ-406 with a working volume of 2.3 liters.

cars Volga GAZ-3110, Sobol GAZ-2752, 2217, 22171 and Gazelle of all modifications, including GAZ-33021, modification K-151D is divided, which is also the base carburetor, fitting the turn-off is burning, but it is rising in the face of a new dosage and idle code.

• This gun dispensing device has a mechanical drive.
• It's very inconspicuous, and it's rare to get caught before for its operational term.
• Manufactured by the Pekar ham plant (formerly LenKarZ), the K151 carburetor comes in many varieties.

The size, as a rule, depends on the size of the jets.

• Device and principle of operation
• In principle, cleaning the K151 carburetor differs little from Ozone.
• A two-chamber carburetor consists of three main parts: the cap or the upper zone, the body or the middle zone and the throttle part, the bottom.
• Their skin contains unique details, systems and components:

the flap is repaired, the ventilation valve, the starting spring, the bracket (designed only for the K-151N model), the cover gasket and the pneumocorrector assembly;

inlet valve or bag, floater, exhaust filter, nozzle vuzol, dispenser, diffuser and bilge pump system;

ventilation fitting for processed gases, throttle valves, emulsion tubes, textolite gaskets and vuzol EPHH.

As has been said before, the K-151 carburetor comes in many varieties.

The K151C carburetor is equipped with the smallest fuel jet.

Otherwise, there is practically no difference between the models, except for the presence of a special outlet for gases.

For example, the K151D model is not equipped with such a fitting.

The difference also depends on the type of throttles.

This can be a cable or traction version of the mechanism.

Any modification of the K-151 is equipped with two variants of the viewing system.

The devices are divided into a plastic-smooth and metal-step sector.

A report on the difference between modifications can be found in the table.

Vartist

• The price for the K-151 carburetor varies between 7-8 thousand. rubles for original products.
• Analogues can be found within 3-4 thousand ranges. rubles
• Varto also means that in the repair kit for Pekar carburetors of all modifications there is often a float chamber head with round ends.

Ale vona is not the best option.

It is recommended to take a Unikar brand part with humic finishing.

You will also need to replace the seat immediately.

Hose connection diagram

• For correct operation of the carburetor, up to 151 parts are correctly regulated according to the hose connection diagram.
• What determines the productivity of the engine is the possibility of increased tension and increased efficiency.
• There are two connection schemes available for the ZMZ-402 and ZMZ-406 engines.
• The motors themselves are structurally similar, except that they interact with certain fittings and calibration openings.

402 engine

During the operation of these devices, there may be problems that appear due to signs of damage to the engine.

Does not trim unarmed wraps

This malfunction often arises through the deterioration of the burning madness.

The reason for this is the failure to adjust the neutral course of the carburetor or the banal alignment of the channels.

• Another option is that the settings of the swimmer near the camera are incorrect.
• Carburetors equipped with an electric valve are adjusted as follows:
• slightly loosen the gwent adjustment XX;

check the revolutions;

If the stench has changed, tighten the screw until the turnover is not normalized.

In some cases, this bolt will fall out of place.

You can buy a yoga in a repair kit or okremo.

Before installation, it is recommended to coat the hole with sealant or wrap the end of the screw with paper.

1. Fills (overflows)
2. It is not uncommon for there to be an overflow that results from an overloaded gasoline tank.
3. It’s easy to spot this problem, just pay attention to the strong smell of burning and the smell of burning saws.
4. Black smoke can also come out of the exhaust pipe.
5. The float is sealed, the walls of the hull are damaged.

You can’t even talk about the situation being set up incorrectly.

It is also recommended to check the floater stroke when installing the vertical upper part of the carburetor - of course, the top must be removed before testing.

System freezing

In the spring, and especially in the winter, the K-151 may freeze.

• This is how it gets caught when the roads are too dry at high speed.
• The reason is that the damper is no longer permanently open.
• This situation threatens with a great problem.
• The ice will close and open the dosing device.

You're starting to get over-rich, and the candles you burn out are covered in soot.

What is it timid?

• As you drive on the highway for an hour, you can hear that the character of the internal combustion engine has changed and become dull.
• Remove the top of the air filter and carefully look at the diffuser.

If there are solid specks in this place, scoop out the little bits of ice, you can continue to chew the route.

Other reasons for carburetor freezing:

sealed electrovalve XX;

the filter mesh is marked or damaged;

• the damper does not close sufficiently;
• can be viewed through the connected device.
• Repair of warehouse elements

Of course, the K-151 carburetor is far from ideal.

1. The performance of the pump can only be tested with the carburetor removed.
2. Fill it with gasoline, then place it over a saucepan with a beaker (the bottom of the plastic bowl is cut, so you know how much it can hold).
3. Then open the throttle and hold it in the open position for five seconds.
4. Then close for 1-2 seconds and open again.
5. Repeat this operation ten times later.

View the ceremony of the collected in the beaker;

It is easy to direct the string to the desired location by sharpening the wall and turning the saw nozzle a couple of millimeters.

• Sumish is supposed to hit the camera directly, and not drip in there or else it will ruin it.
• When the spray jet is completely empty, it is necessary to reconfigure the discharge valve to ensure that the opening is clean.
• Turn on the diaphragm expansion mechanism, flush it empty and blow through all channels with a compressed air jet.
• The opening of the dispenser can be effectively cleaned with a 0.3-mm dart;
• On K-151D/S models, the sub-sparking dispenser of the scouring pump is transferred.
• However, in these carburetors there is no need, otherwise the chamber is closed.

If this dispense is determined for any reason (for some reason), you will begin to pour the fuel into another chamber.

When the valve is open, gasoline will flow to the manifold.

This will cause failures in the engine.

• It is therefore recommended to replace this element with a single one.
• Or upgrade the carburetor by turning on the robot and another chamber;
• When open, the wind damper must be positioned strictly in a vertical position – 90 degrees!
• The smallest blockage led to the advance of the Vitrat Paliv;
• The leg is adjustable with a slight adjustment.
• lift the carburetor with insulating gaskets;
• install a new one.

If you want to replace the K-151 with another model of carburetor, for example, the DAAZ (it is often used on UAZ with 2.5-liter engines), the range of robots is expanding.

One of the reasons for the modernization is the conversion of traction to a cable drive, so that the chamber can be opened normally.

• What do you need for:
• new dosing device model DAAZ or similar;
• gaskets - textolite and paronite;
• air filter adapter;

bolts, pins, washers.

• The work must be carried out after removing the old carburetor:
• screw in new studs if the old ones are short;
• try on the largest gasket - if the openings are inconsistent, drill new holes by 10 mm;
• also install a thin gasket, carefully ground so that it does not interfere with the movement of the carburetor flaps;
• install the adapter onto the fresh filter - screw it to the carburetor with an M6 bolt;

install a new device.

If you want to connect the EPHH, you can install a plug instead of the valve.

Adjustment instructions: how to adjust the K151 carburetor

A blown and clean K-151 carburetor, which has an even surface shape, can produce clear and thin operation.

• However, degrading the devices, which is still possible in the wind, will prevent the motor from developing capacity and stability.
• This carburetor requires more regulation.
• Adjustment of the K151 carburetor is carried out in three main directions:

adjustment XX;

• adjusting the position of the air damper and throttle damper;
• regulation is equal to gasoline at the camera.
• Let's talk about idle speed adjustment:
• warm up the engine to 80-90 degrees;
• stop the engine from running with the shutter closed;
• turn the screws all the way (yield and hardness) - the power unit will roar at maximum speed;

tighten the screws until the wraps drop to the minimum possible;

The normal level of gasoline in the float chamber is 21.5 mm when the valve is closed.

The position is aligned from the top edge of the chamber to the surface of the middle.

- Dry dampers

Adapter for UAZ carburetor K-151

The K-151 carburetor was often installed on Russian passenger cars and light duty vehicles.

These units are manufactured by LLC "Pekar".

Virobnik appreciates that the best carburetors are the best among all others.

The plant produces three versions of accessories for installation on four-cylinder power units ZMZ and UMP with a volume of 2.45 liters.

Features of the design

Considering the flexibility of the K-151 carburetors, adjustment and repair caused great difficulty among the authorities.

The housing has two channels - the carburetor chambers.

At the bottom of the skin there are valves with a mechanical drive.

The carburetor has two chambers.

The throttle valves are opened one after another to increasing pressure.

If there is insufficient rhubarb flow, the float will go down and open the head valve, thereby ensuring access to gasoline.

In addition, as soon as the camera is filled, the float will rise uphill.

As a result, the main valve closes.

Therefore, since the waste water is not constant, the supply on the side of the combustion pump is changed.

This allows you to turn off the moving pressure at the carburetor inlet.

The rhubarb in the floater chamber is unstable and is not saved in different modes of the motor operation.

GDS – main dosing systems

The GDS in the first and second chamber of the carburetor has a new device.

Dosing systems are made up of fuel and air jets of the carburetor.

The K-151 has a stink installed in the lower part of the float chamber.

There are emulsion tubes under the jets in two chambers.

Idle system

This is a completely autonomous system for preparing sumisha.

Most often, most problems can be caused by cleaning the K-151 carburetor jets.

Damaged and burnt nozzles can become clogged through unclear gasoline, old hoses, contaminants and gasoline filters.

Another reason is that the engine may run unstably - due to carburetor overheating.

The metal body of the unit is very soft and easily deformed due to overheating.

As a result, a gap is created between the cover and the body.

Through it, it is possible to check the air flow again, and adjust the carburetor, although it is always impossible.

Often the cause of malfunction of the K-151 carburetor can be wear of elements and components.

There are a lot of humic membranes, springs, and jets.

The engine is quiet at idle

The most common cause is a clogged ignition jet at idle.

It is located on the solenoid valve.

The solenoid valve itself is also the cause.

If the element is working and does not idle, it is necessary to clean the jet and the XX channel.

Knowing the installation of the K-151 carburetor, repair, adjustment and tuning will not take a lot of time.

Most malfunctions are usually associated with inappropriate adjustments or contamination of the calibration openings with friable particles or hard resinous deposits.

• The engine robot is unstable at unpowered speed.
• The problem may lie above the carburetor itself, or between it and the accelerator pedal. For accurate diagnosis, it is necessary to connect the wire to the device and manually turn the throttle on the motor that is running.
• If the speed has dropped to the required limit, the problem is with the dart. If nothing comes out, turn the carburetor over to prevent corrosion and blockage.

Percolation with gasoline

.

The cause of the malfunction most often lies in problems in the floater chamber, the moved vice or the adjustable position of the floater.

• Turn the pressure over, if it is normal, look for a problem in the floater chamber.
• Congested spark plug
• .

Soot on the candles is a sign of too much fuel supply.

This could be caused by a faulty valve or incorrect firing rate.

In another case, you need to adjust the float and check the vice.

Video - Attachment and operation of the K-151D carburetor

Adjustment of carburetor K-151

Adjustment of PU on a previously removed carburetor.

First you need to open the throttle valve a little, turning it all the way and locking it to control the trigger device.

Then we release the DZ and, using an additional drill or other tool, check the gap between the edge of the shutter and the wall of the chamber.

The value is within the range of 1.65±1.5 mm.

To adjust this gap, we unscrew the lock nut, and then wrap the screw stop.

In this case, it is necessary to remember that for correct operation of the mechanism, the surface of the screw head must always be in a position perpendicular to the surface of the cam.

In other words, wrap the screw in multiples of half a turn.

On a pre-heated engine, with the screw in a fixed position, which regulates the volume of the burning mixture, wrap the fitting of the fuel tank until the engine wrap does not reach the maximum value.

Then, the rotation frequency increases by 110 ±10 rpm, which is equal to the higher rotation speed of the engine in XX mode.

1. After this, the screw is turned around and the turn is reduced by 110±10 rpm.
2. Refurbished from series 151 (151d), the K-151s carburetor has the following design features:
3. a smaller diffuser, which provides more stable characteristics and allows for more discharge;

at the piercing pump, a lot of dispensers were transferred to the offending chamber;

The EPHH is located on the carburetor, the solenoid valve and the combustion controller are under the hood, on the front panel of the car. The ignition controller controls the electromagnetic valve depending on the frequency of rotation of the engine crankshaft and the pressure level in the intake manifold.
The fire supply connection system operates in this way. When the pedal is released to drive the throttle valves and the rotation frequency of the engine shaft is more than 1650 hv-1, the controller does not supply voltage to the solenoid valve, as a result, through the channels of the solenoid valve it goes back to the EPH, the valve of which blocks the idle channel.
Specifications of carburetors K-151 (ZMZ-402), K-151D (ZMZ-406), K-151T (UMZ-4215) : 76
About the book: Kerivnitstvo Vidannya 2003 rock.
Book format: pdf file in zip archive
Storinok Language

Carburetor K-151.

Vlashtuvannya, regulation, repair.

The book examines the peculiarities of the design and operation of automobile carburetors of the K-151 family manufactured by VAT PEKAR.

The stepless drive of the PU ensures better control of the engine during the startup and warm-up process, and also eliminates the need to press the accelerator pedal before starting a cold engine.

Instructions have been made for disassembling, assembling, diagnosing, adjusting and repairing components and carburetor systems.

Blog about UAZ

All modifications of the carburetors of this family are of the same type: double-chamber dual-fuel with a falling flow of fuel mixture and pneumatic galvanization, a balanced float chamber, elements of a closed card ventilation system era and the latest findings of throttle valves.

The smells are divided mainly by calibration data and sets of accessories and additional elements.

Carburetors of the K-151 series are based on the same standard schemes and designs, which are radically different from the wider carburetors of the “Weber”, “Ozone” and “Solex” types and practically do not contain any hidden parts.

head dosing systems in the primary and secondary chambers, a transition system in the secondary chamber;

The need to build carburetors of the K-151 series is due to the expansion of the model range of the Gorky and Ulyanovsk Automobile Plants, cars equipped with engines from the Zavolzky Motor Plant (ZMZ). VAT "PEKAR" produces a basic carburetor of the K-151 series and this modification - K-151V, 151G, 151E, 151I, 151D, 151P and 151N, intended for installation on four cylinder engines of ZMZ cars volumes of GAS, UMZA cars Izh.

І Modifications K-151V and K-151G are intended for engines of the UMZ-417.10 family with a working volume of 2.45 liters.

cars UAZ-31512, 31514, 3741, 3962, 2206, 3303, 3909. The smell varies depending on the base carburetor, and all other modifications of the family, calibration data, obviously The system of the float chamber unbalancing valve with an electric drive, similar to the gas recirculation system valve that was used .

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library

Unscrew the five screws securing the float chamber cover.

After carefully lifting the cap so as not to damage the floater mechanism, apply low-frequency draft to remove the cap and the floater chamber gasket.

Turn the lid over and, holding the float, remove the float from the stands.

Remove the floater and carefully remove the head with the polyurethane washer from the body of the supply valve, which strengthens it.

Unscrew the valve body and remove its gasket.

Unscrew the filter plug, remove the gasket and remove the filter mesh.

Unscrew the spool pump and remove the washer.

Disassemble the mechanism for driving the wind damper and remove the damper when the mechanism is unsatisfied, as well as the gaps between the wall of the wind pipe and the damper when it is closed 0.2 mm.

Attach the mixing chamber to the body of the floater chamber by unscrewing the two bolts that uncoiled the shackle of the stern pump drive, remove them from the rod and firmly.

Having removed the gasket of the mixing chamber, remove the large diffuser from the float chamber body.

Remove the piston of the stern pump assembled with the drive parts and the economizer drive rod.
Unscrew the economizer valve assembly and remove it from the well.
Unscrew the plug of the emulsion tube well from the gasket at the same time and remove this tube, unscrew the idle jet.
Unscrew the plugs of the fuel and air jet channels of the head dose system and the idle jet, remove the gaskets of these plugs and unscrew the secondary jets.

Remove the valve lock of the stern pump and remove the valve from the well.

Remove the retaining ring and the ball of the check valve of the stern pump.

Jets and other dosing elements are specified by their capacity or size.

The economizer valve assembly is sealed.

At the hour of checking its tightness under a pressure of 1200 mm of water.

Art.

It is allowed to flow a little more than a few drops of water onto the hvilina.

The level of wear of the piston of the stern pump and the walls of the well, as well as the tightness of the gate valve, must be such as to ensure a pump flow of at least 8 cm3 per 10 working strokes of the piston.

Check the float for leaks by immersing it in water at a temperature not lower than 80°C.

The release of the bulb from the float indicates that its seal has been damaged.
Once the float is damaged, seal it with soft solder, first removing the burnt liquid that has sunk into the float.
After soldering, turn over the floater, which is responsible for adding (13.3±0.7) r. When preparing the float, remove the solder without damaging the seal of the float.
The top of the detachable body and the cover of the float chamber must be flat, allowing for a thickness of no more than 0.2 mm.

Fold the carburetor in the correct order, assorted in reverse order:

1. If, when disassembled, the throttle was removed or the valve was closed, then when folded, tighten the screws of their fastenings.
2. Turn over the external economizer and, if necessary, adjust as indicated in the section “Maintenance of the living system”.
3. Adjust the flow rate in the float chamber (division “Life system”).
On the selected carburetor, reverse the interaction between the air and throttle valves.
When the damper is closed completely, the throttle valve must open to 17-21 °, which indicates a gap between the wall of the mixing chamber and the edge of the valve (2.5 ± 0. 2) mm.
In case of inconsistency of values, it is possible to improve the low-frequency thrust of the rotating shaft.
1 – damper is damaged;
2 – gwent;
3 – starting spring;
4 – carburetor cover;
5 - bracket (only for K-151N);
6 – gasket;
7 – diaphragm of the pneumocorrector with a draft assembly;
8 – gasket;
9 – pneumocorrector cover;
10 – spring;
11 – gwent;
12 - gwent-vitisnyuvach;
13 – bag (inlet valve);
14 – floater;
15 - float chamber body;
16 – fitting for firing;
17 - washer;
18 – fire filter;
19 - washer;
20 - burning bolt;
21 - plug;
28 – cam;
29 – gwent;
30 - damper of the primary chamber;
31 – economizer valve at the assembly;
32 - gwent regulating warehouse sumishi;
33 - locking element of the EPHH valve;
34 - valve body EPХХ;
35 – gasket;
36 - EPХ valve cover;
37 - tube;
38 – screw of operational adjustment of idle speed wrappers;
39 – thermal insulation gasket (textolite);
40 – thermal insulation gasket (cardboard);
41 - mali diffuser;
42 - dispenser of the stern pump;
43 – screw regulating bypass;
44 – spring;
45 - diaphragm of the bilge pump at the assembly;
46 – gasket;
47 – gwent;
48 – plug;
49 - washer;
50 – emulsion jet idle;
51 – electromagnet;
52 – traction;
53 – retainer;
54 – nut;
55 - important;
56 – fitting;
57 – gwent;
58 – ventilation valve cover;
59 – ventilation valve;
60 – spring;
61 – gasket

The procedure for disassembling and folding carburetors K-151V, K-151E and K-151U

Disassemble the carburetor in the following order:

1. Remove the cotter pin and release it against the traction of the wind damper.

2. Unscrew these screws 2 (very small) securing the carburetor cover, carefully remove the carburetor cover 4 and the gasket under it.

3. Dismantle the diaphragm device of the pneumocorrector, for which unscrew three screws 11, remove cover 9, gasket 8, diaphragm of the pneumocorrector with assembly rod 7 and spring 10.

4. Unscrew the screw and remove the dispenser 42 of the bilge pump.

5. Unscrew the adjusting screw 43 of the fuel bypass, turn the body of the float chamber 15 over until the block 13 of the inlet valve comes out.

6. Tighten the screw-wityskuvach 12.

7. Unscrew the cylindrical plug and remove the entire float, remove the float and remove the fire valve.

Unscrew the fire valve seat from the gasket at the same time.

8. Unscrew the fuel supply bolt 20, remove the fire supply fitting 16 and the fire filter 18.

9. Unscrew the screws 47 securing the cover of the spool pump, remove the cover 22, gasket 46, diaphragm of the spool pump assembly 45 and spring 44.

10. Unscrew the main jets, pull out the emulsion tubes.

11. Unscrew the two screws 29 and push the housing of the mixing chambers 16 out of the body of the floater chamber 15, being careful not to damage the cardboard 40 and textolite 39 gaskets.

12. Unscrew the two screws securing the EPXX valve from the assembly (pos. 31) and remove the rest from the housing of the mixing chambers.

To disassemble the K-151V carburetor, cream of an over-inflated vehicle, follow:
1. Unscrew lock 53, unfasten rod 52 from 55 and unfasten 55.
2. Unscrew two screws 57, remove cover 58, valve 59, gasket 61 and spring 60.

Control and inspection of details

All parts appear clean, without soot or resinous deposits.

The jets after washing and purging the constricted surfaces of the guilty mother are given a throughput.

All valves must be sealed, the gaskets are intact and there are no gaps that need to be compressed.
The diaphragms of the accelerator pump, the pneumocorrector and the EPHH valve remain intact, without damage.
Replace defective or damaged parts with new ones.
The carburetor must be assembled in the same sequence as the gate disassembled.
First you need to select all the carburetor body parts - the carburetor cover, the float chamber body and the mixing chamber housing, and then connect them together.
1. Make sure that the gaskets are installed correctly.
2. Make sure that the throttle and wind valves rotate freely, without jamming and cover their channels thoroughly.
3. Tighten all threaded connections firmly and without excessive force.
4. Make sure that the fire valve fits snugly against its seat and is seated without distortion.

5. Turn over and, if necessary, adjust the flow rate in the floater’s chamber, in which case the floater must turn freely on its axis without sealing the walls of the chamber.

For most Volgas, Gazels and UAZs, the industrial sector has left little room for choosing more carburetor models.

The manufacturer simply equips the current gasoline engine up to 3000 cc with K-151 series carburetors.

The position is simple, whoever doesn’t deserve it can victorize the old K-126.

• With proper adjustment, the K-126G carburetor can successfully replace the larger 151 series on the Volzi.
• Guarantees of normal carburetor operation
• First of all, take the decision to replace the carburetor K-151 K-126G or K126GU, upgrade to K-151S.
• In many cases, the reputation of the K-151C carburetor, its repair and adjustment practically does not differ from other models of the same series, and the efficiency of the robot is ensured to be further improved:

diffusers paint the profile of the chamber channel;

optimizing the profile of the cam drive of the accelerator pump allows the full supply of fuel to two chambers for the necessary service;

1. The damper drive rotates steplessly, providing precise positioning, which makes cold starting of the engine easier;
2. The range of adjustment of the screws has been changed to dose, which significantly increases the dynamics of the engine while maintaining gas toxicity standards.
3. Virobnik claims a theoretical reduction in dynamics of no less than 5-7% once the K-151S is installed.
4. For normal operation, the K-151 carburetor requires repair and adjustment; otherwise, the carburetor exhibits instability of characteristics and is subject to burnout.

To achieve more stable operation, you need to check the adjustment of the main adjustment points:

Check the serviceability of the EPХХ K-151 robot and all system components.

Most often, after replacing the K-151 carburetor with the simpler K-126 model, few problems arise.

We must first ensure that the lower block of the carburetor is filled with moisture until the cracks are repaired, and there is a sharp overload of the mixture.

To avoid damage, it is necessary to carefully align the mating surface on the emery paper glued to the surface.

In a number of cases, the adjustment and repair of the K-126 carburetor does not affect the sense of wear in the places where mechanical parts are obtained, for example, in the support openings of the flapper axle or rods, the threading of the adjusting screws.

In such places, it may be possible to pump and evaporate gasoline with immediate exposure to air.

They are easy to recognize by the frozen body of the K-126 carburetor, which is done.

Adjustment of carburetor K-151

The adjustment procedure is not particularly complicated, but it is easier to read the adjustment of the K-151 carburetor in the video:

The old Radyan school of carburetors will ensure the repair and adjustment of the K-151 or K-151E with the help of a simple or screw-like twist.

• Control of the level of imbalance of the float chamber K-151
• For normal operation, a properly functioning valve is required to ensure compensation for the pressure of the wind in the floater chamber.
• If there are problems with the operation of the balancing valve, the flow rate will sharply reduce and regulate it carefully.
• If the clanging of the drive does not indicate balancing the vise, before repairing it is best to check by replacing it with a known reference version.
• For further adjustment of the K-151, first check and adjust the flow rate in the floater chamber.

Installable idle speed K-151

The carburetor design for adjustment and repair is equipped with a screw that surrounds the extreme position of the damper.

The river is very colorful, but there is nuance.

The gwent tends to self-tighten, thereby removing the shutter from the suspended position.

The shutter begins to rub against the walls of the chamber and after a while it gets stuck in its extreme position.

To avoid such a situation, after adjusting the screws, follow with the help of farby specks.

If you are not good at plumbing repairs and need to “sharpen” and adjust the K-151 carburetor for your car, choose K-151S.

Otherwise, the old, reliable K-126G will be suitable, or for cars from post-mash authorities with the GU index.

The UMZ-4178 and UMZ-4179 engines have K151V carburetors, the UMZ-4218 engine has a K151E carburetor, the ZMZ-4021.10 engine has a K151U, the ZMZ-4104.10 engine has a K15.

The design of the carburetors is, however, the same, in addition to several metering elements.

Carburetors K151V, K151E, K151U, K151TS engines UMZ-4178, 4179, 4218 and ZMZ-4021, 4104, devices.

Carburetors K151V, K151E, K151U, K151Ts engines UMZ-4178, 4179, 4218 and ZMZ-4021, 4104 are equipped with an automatic system for starting and warming up the engine and an autonomous idle system with a primus economizer.

- When the throttle valve is open, the accelerator pedal is pressed;
- When the throttle valve is closed, the pedal is fully released, since the rotation frequency of the drive shaft does not exceed 1050 revolutions per shaft.

The EPH valve closes (economy mode) when the engine is galvanized, the pedal is fully released, when the rotation frequency exceeds 1400 revolutions per spindle, and remains in the closed position until the rotation frequency of the rotary shaft decreases to 1050 revolutions per hvilina, until the damper stops again.

When the combustion occurs, the EPHH valve also cuts off the supply of emulsion from the idle system, which makes it difficult for the fleeting work of the hot engine to burn out.

To achieve the greatest fuel economy, it is necessary to ensure that the throttle control pedal is fully released in the primus idle mode, so that at the lowest pressure the micro-machine is used and the primus idle economizer is switched on.

It operates behind an auxiliary pedal, connected by a rod system to the throttle valve, and a handle that controls the throttle and air valves of the carburetor.

The handles are connected by flaps using pull rods.

The position of the rods is fixed by turning around the axis by 90 degrees in any direction.

In Russian cars, the manual carburetor handles are sunk all the way.

Maintenance of carburetors K151V, K151E, K151U, K151C.

It involves periodic adjustment of the fuel level in the float chamber, adjustment of the low-frequency rotation of the engine's spindle shaft, adjustment of the engine's speed pump and economizer, cleaning, blowing and rinsing of carburetor parts. and resinous lining, re-verification of the throughput of the giclee edition.

Adjustment of idle speed due to stagnation of gas analysis equipment must be carried out in the following sequence on a warm engine with the intermediate cup removed:

1. Use the idle speed adjustment screw to set the minimum rotation frequency of the crankshaft at idle speed.
2. Set the pressure control screw to a position that will ensure that the flow of gases is between 0.5-1.0%.
3. Remainingly set the idle speed adjustment screw to a low idle speed.
4. Check instead of CO and CH in processed gases that are not at fault: at the minimum frequency of rotation of the spindle shaft - 1.5% and 1200 ppm vpd.
at a displacement of 2400 revolutions per hour, the rotation frequency is 2% and 600 ppm per day.
5. Install a new cover.

If it is impossible to achieve the values ​​of the indicators instead of 3 and CH in the produced gases, it is necessary to diagnose the engine and other systems, identify the malfunction and repeat the adjustment.