Do-it-yourself gas equipment repair lovato

In detail: do-it-yourself gas equipment repair from a real master for the site my.housecope.com.

Hello. In a previous article, I talked about how to disassemble a Tomasetto AT-07 gas reducer at home. This time it will be about the gas reducer again, and today you will learn how to disassemble the Lovato gas reducer and install the repair kit. The need to disassemble and clean the gearbox arises when certain symptoms indicate malfunctions. How to understand that it is time to clean the gearbox is written in this article.

A set of hexagons and screwdrivers;
Gearbox repair kit Lovato;
White Spirit, detergent;
Rags.

Safety comes first! Before how to disassemble the reducer: find a well-ventilated area, turn off the gas supply, remove the negative terminal from the battery. And most importantly, remove any sources of fire!

1. So, the gas supply is shut off, all safety measures are observed, you can proceed. The first step is to remove the gas supply hoses and dismantle the reducer.

2. Then we take the hexagon “H4” and unscrew the 6 bolts securing the upper gearbox cover.

3. They removed the cover, under which the first membrane is located. We pry on the membrane and remove it in the direction indicated in the photo.

4. You will then have access to the rocker arm. Remove the two rocker arm mounting bolts.

5. Unscrew the sensitivity adjustment screw.

6. Hook the rocker arm with a screwdriver and remove it.

7. Unscrew 4 bolts with a hexagon, then remove the diaphragm and the spring located under the diaphragm.

8. Turn the gearbox over and unscrew the 8 fixing screws, remove the cover together with the spring located under it.

Video (click to play).

9. Further, according to the same principle, we remove the membrane.

10. After you dismantled the gearbox, clean it, wash it, and also replace all necessary rubber bands and oil seals. Allow all parts to dry before assembly. Assembly is carried out in reverse order.

That's all for me, thank you for your attention and see you again at the GBOshnik.

In gas equipment, the reducer is given the greatest importance among all units. Its task: to provide the driver with an opportunity to lower the pressure that comes from the cylinder. Repair, namely adjustment, on a car's gearbox provides for working with one or two regulators: this is the main difference.

In principle, a gas pressure regulator is a primitive pressure regulator designed to maintain a standard pressure value from the fuel consumption independently. As practice shows, the device supports it with insignificant fluctuations. The pressure decreases slightly with increasing gas flow. This is not a very significant point, but it requires attention.

The Lovato gearbox design is characterized by versatility, simplicity and reliability. For Turkish semi-handicraft manufacturers, the manufacturer is a role model. Almost all generations of Turkish gearboxes have adopted the design of a flattened "drum", on the ends of which there are two stamped covers. Company "OFFICINE Lovato S.p.A." belongs to a family-type enterprise which was founded in the post-war period under conditions of an acute shortage of fuel. In modern conditions, Lovato is one of the leaders in the world market for gas cylinder systems. Repair, namely adjustment, of Lovato analogues depends on the following factors:

generations of the mechanism;
the number of regulators;
fuel system.

Manufacturer's product range:

Reducer propane Lovato vacuum 90 and 140 kW. The device is intended for systems of the 1st generation of LPG on a carburetor type car with a capacity of up to 123 horsepower. The gearbox is intended exclusively for conversion to propane.
Propane Lovato reducer electronic 90, 140, 170 kW. The device is designed for HBO systems of the 1st, 2nd and 3rd generations on auto injection, mono-injector and carburetor types with engine power up to 123 horsepower. The reducer is designed for propane-butane.
Lovato methane reducer. The 2nd generation device is used for converting cars and buses to methane fuel.

Repair, namely adjustment, of the gearbox provides for orientation in its settings. Propane counterparts mainly have two regulators, but they also meet with one. Methane type reducers are almost always characterized by one regulator. In their management, these settings are the most problematic.

Repair for the gas generation of reducers with one unique setting involves manipulating exclusively the pressure of the transmitted gas. Vehicle owners with particular enthusiasm prefer to "turn up" the pressure on their own. Having set the only correct and, which is very important, the true value of the pressure, the fuel reducer alone will make it possible to limit the consumption of gas at operating capacities due to an element called the screw of greed.

The repair has some difficulties in the case when the screw is in the "closed" position. To maintain idle speed, in this case, it is required to build up pressure, the process of which includes:

Checking the gearbox before adjusting, namely, whether the "greed screw" is open.
After the implementation of the previous stage, you can start adjusting work.

Gearbox device Lovato

Directly the gas regulator lovato is presented in the form of a screw compressing the spring. In order to install it, you should consider:

when twisting, the gas supply will be reduced by the reducer;
when twisting - build up.

Sometimes screws are found with a left-hand thread, most often it is a right-hand thread. This moment depends on the manufacturer's design imagination. To slightly simplify this task, it is necessary to take into account: for any rotation, the above characteristics of the change in gas pressure are characteristic of it.

Idling adjustment in vehicles is explained by the degree of shaking of the engine. Its quiet work indicates that the gearbox repair was done competently and efficiently.

So, we start the engine and hold the throttle open. Then we smoothly release it and slow down until the power unit stalls. At the same time, do not forget the condition: the gas reducer of the car engine must continue to work. For "dummies" explanation: the engine will not stall completely if you start turning the throttle regulator in an arbitrary direction. If the worst performance of the motor is visible, it will be necessary to change the direction of rotation of the gearbox and restore its stable operation.

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When the required temperature is reached, the power unit does not switch to the gas mixture supply. A discharged battery has a charge level of less than nine volts. The gearbox does not heat up enough. The reasons for this malfunction are the gas pressure sensor, the temperature of the reducer and the gas. There is no signal indicating the number of revolutions of the internal combustion engine.

The reason for the increased consumption of gas fuel is incorrectly selected injector and calibration fittings. The pressure level of the reducer is increased. The adjustments of the gas injection system are violated. Defective probe lambda, gas injectors, gearboxes and ignition systems. Lack of heating by the gearbox coolant. An underestimated compression level in the cylinders of the power unit. The gearbox is incorrectly adjusted. The air filter is clogged.

With a sharp opening of the throttle valve, a failure occurs due to disturbed adjustments of thermal clearances on the valves of the gas distribution mechanism. Found faults in the timing mechanism of the power unit of the car. The engine compression level is too low. Malfunctions of the ignition system and gas injectors detected. The fine gas filter, gas lines and gas filter are clogged. The pressure in the gas regulator is too low. The calibration fittings and injectors are incorrectly selected.

Gas injection spontaneously returned to the gasoline fuel mixture. This is due to the fact that the temperature of the gas mixture is at a low level, which is manifested due to the fact that the reducer does not have sufficient power. The battery has been discharged and the battery level has dropped to less than nine volts. This is due to a faulty gas pressure sensor, reducer and temperature. Engine RPM signals have been cut off.

If you decide to repair gas equipment on your own, then you will have to follow the basic rules from the outset. The reasons why your equipment of any generation could fail are listed above. Therefore, let's take a look at the methods that solve them.

1) If the power unit does not want to start, or it turns off while driving, then the problem is that the gas pumping into the mixer is suspended. The main reasons for such a refusal are as follows:

- frost is formed on an evaporative basis and to solve this problem it is necessary to start the engine on gasoline if the temperature outside is not lower than 5 degrees Celsius. And only at the moment it warms up to at least 40 degrees, switch to gas fuel;

- air is captured in the transmission of the heating system and evaporates due to the fact that the liquid level decreases. Here it is necessary to adjust the liquid level to the required amount.

2) If at the time of using gas fuel its consumption began to increase during engine operation, then the mixer should be replaced.

3) If the engine runs on gas, and gasoline is also consumed, then there are problems in the broken gasoline solenoid valve. The solution to this problem is to replace the valve.

4) When the engine crossed the threshold of 45 thousand kilometers, the reason may be the wear of the rubber gaskets. Locate and replace any defective rubber gaskets.

5) The engine power has decreased, along with it, the maximum speed of the car has decreased. This may be due to the following factors:

- faults in the filter of the solenoid gas valve. To eliminate this error, it is necessary to close the valve cylinder. After unscrewing the nut from the gas valve nozzle, remove its cap. In doing so, be careful not to damage the gasket. Dismantle the filter itself, disassemble, and then rinse in a solvent. If it is heavily soiled, then replace it.

- just slightly unscrew the valve of the second valve of the reducer-evaporator. Increase the gas flow slightly by turning the regulator clockwise.

- if the gas metering unit works unbalanced, then turn the reducer screw half a turn.

QUESTION: HOW MUCH IS GAS CONSUMPTION-AND HOW MUCH-OVER-CONSUMPTION LITERS ON THIS 1.8 MONO-INJECTOR.

Was it weak to connect the fuel pump from the gasoline valve?

Why do you need to warm up on gasoline and then switch to gas? Now my car did not start on the street -7 from under the gas reducer, the gas flowed and the boiling began in the cockpit, I generally closed the taps on the balcony, what could it be, and as luck would have it, there is no gasoline in the tank what can it be, tell me

It's nonsense, I changed a new set, bought a new set for 800 rubles, and nothing helped. And in the end I bought a new gas reducer, right now everything is super. The miser pays twice 😖

There is nothing to break there. If you change the diaphragms and rubber valves on the gearbox, it should work anyway. Only, if there is an electrovalve on the gearbox, check it for operability. Everything should work. Yes, one more trick. When you put the long rocker arm (which controls the membrane of the second chamber), YOU MUST REMOVE THE SENSITIVITY SCREW AND INSTALL THE SPRING THAT IS SUPPLIED INTO THE "PIPTIC" ...

And I just made a return line with a smaller tube diameter (tee) after the gasoline pump in front of the electric valve. And now when I switch to gas, the gas continues to pump back into the tank. And the pump does not dry out and everything works fine.

I read the comments and. I am surprised at the authors of these comments. Some chase all the nonsense on the kid who
he himself solved the problem, even if according to the "collective farm", not a specialist and decided to share with such a problem, warning other car owners with just supplied HBO. I think the guy deserves respect.

The story of the gasoline pump is called “the car was mined”. Such master-killers should be severely punished - because of one freak, many people can die, not to mention the material damage. factory, the wiring in the car caught fire when leaving the gas station. The currents in the car are huge and the wiring flashes instantly at short circuit. You cannot blindly trust your life to anyone, especially the work of strangers who are not responsible for anything.

Well, the PPC specialist I can’t understand how it works, I don’t know. it is useless to change these pk, because they do not have that very spring that I “cannot understand” I will not get

hello and thanks for this video, is there a way to make this lovato to give you more extra miles
iam a taxi driver when i work 12 hours i have to put 12 to 13 galons of glp
this is driving me crazy

any help will be appreciated

Who can explain in an accessible way why there is a solenoid valve on the gearbox, if a separate valve is installed before the gearbox?

Which, before the reducer, is to filter and shut off the gas during repair. Which is on the reducer itself, for control (brains).

Can coolant penetrate through this gas regulator into the intake tract and then into the cylinders?

put a relay instead of a button, and control the relay, take power from the petrol solenoid valve.

Throw out the petrol valve and connect the wires from it to the relay for turning on the petrol pump. and you will be happy.

Who will answer the thread, you can disconnect the power terminal from the car.

you just need to remove the gas valve. or if your solution is working, then instead of the petrol valve, install a five-contact relay to turn off the petrol pump.

changed the filters and after that, when the acceleration is not great, it switches to gasoline, what can you tell me?

Normal video. Hemorrhage with not turning off the fuel pump was corrected by installing the correct gas-petrol switch button. It is better not to install an additional button, but to turn off the pump from one post. Button with contacts (4 groups). Otherwise, if you give the car to a godfather, you will have to consult him for a long time. Worse are those who have a gas pump on a mechanical shaft. If you turn off the gasoline, then it still works (pumps). Even with the valve closed, he somehow manages to suck (suck) the gasoline a little. Checked more than once. That is, we work on gas and, in addition, we have a very low consumption of gasoline.

Hello. I have a VAZ 2107 I installed myself that year HBO 2 with a TOMASETO gearbox with two screws. SCREW OF QUALITY AND IDLE SPEED I adjusted it everything was great Started up at -15 degrees AND EVERYTHING WORKED. ON THIS VIDEO, ANOTHER REDUCER is ONE screw). A year later, such a problem appeared. It happened that I did not have gasoline and had to start IMMEDIATELY ON GAS. So it used to start at -15 freely. And this year it has become and at -8 WILL NOT START. And now it won't start at all. And it works on gas after I start on Gasoline and switch to gas. I tried to readjust the gearbox again. None of it works. And here's the thing that appeared. I started adjusting the gearbox and drew attention to the fact that the SCREW OF GREEDE (on the first and second chambers that go) I started to twist them a little, the speed drops sharply, the engine bursts does not work stably jerky and now it stalls. I try to twist, thereby opening the channel more, the share of gas also stalls, the whole burst. That is, some kind of adjustment threshold has appeared. This has never happened before. What could it be.
and SECOND QUESTION: how to adjust a gearbox with two screws (QUALITY AND IDLE)

Part 2 -
Gas consumption increased
We are changing the repair kit on the LOVATO gearbox, and also got to repair the gas pump because grief masters installed HBO not correctly.

We are with you again. Today Nail Poroshin solves the problem of NO Idling on gas and gasoline of the VAZ-2107 car.Enjoy watching everyone! ˜ Dear subscribers! Here you will find information about a multifunctional device that allows you to measure fuel consumption, including gas, if LPG is installed on the car, measures temperature and on-board voltage, and can answer the question “What time is it now?”.

We unscrewed the line from the multivalve, which goes under the hood to the gearbox, instead of it we screwed in a drain pipe.

Even top-notch technology can fail. A gas cylinder system installed in a car, for example, in a Gazelle, is prone to potential malfunctions, like any other. Inevitably, this probability increases the use of low-quality LPG of the wrong generation, ill-considered installation by incompetent technicians, and, above all, careless operation and non-observance of safety measures.

Before proceeding to a detailed analysis of specific symptoms caused by a malfunction of certain parts of HBO: a gearbox, nozzles, an electronic unit, a cylinder and a multivalve, it is worth noting three accompanying factors:

The desire to save money at any cost is also expensive. The installation by unskilled workers of questionable equipment, even at half the price of the usual licensed middle-generation equipment in a good service center, very rarely leads to something good. Incorrect surface tuning also has serious consequences, which, if ignored, will lead to the failure of the entire chassis in the car.
The most common cause of any problem is the motorists themselves. Lack of understanding and reluctance to delve even into the basic principles of gas operation in a car and individual components, failure to comply with elementary mandatory maintenance procedures, careless and negligent handling of LPG and the vehicle as a whole lead to problems.
The use of low-quality dirty gas will lead to very rapid clogging of the injector filters and multivalve with waste and impurities.

Some of them are highly corrosive, while other resinous substances clog the passage tubes and rubber valve plugs that are difficult to clean. By skipping the next change of gas filters in the car, the owner will bring LPG equipment of any manufacturer and generation to the terrifying state, even with a first-class installation and jewelry tuning.

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Some types of breakdowns can be eliminated by simply reconfiguring the computer unit or manually adjusting the corresponding reserve bolts of the injectors, reducer and multivalve. But in most cases, to correct and change gas equipment units correctly, you need considerable experience and skills of an auto repair specialist, not to mention the necessary tools. Thus, it is preferable to repair HE using the services of professionals at a high-quality service station licensed to work with such equipment, or at the service center of an HBO supplier or a car: for example, a Gazelle with built-in Lovato of 4 generations can be easily repaired at the appropriate stations.

A motor operating on equipment of any generation of equipment can become unusable in several ways, which cause:

depressurization;
problems with turning on the motor;
uneven turns during idle;
disruption of a smooth transition in load modes;
drop in engine power and jerky movement;
problems with switching from gas to gasoline and back (the engine stalls, power is lost, fuel consumption increases);
high gas consumption.

The main reason for increased fuel consumption, pops and engine jerks is the loss of tightness of individual components.It is easy to fix it with your own hands, but it is not easy to detect it without special diagnostics, when each sensor is checked. Loss of tightness can cause internal or external leakage, that is, loss of density and gas leakage inside the power system. This nuisance is typical for valve-seat-type locking joints at multivalve valves, and is found among injectors. The pressure will rise steadily.

The risk of an external breakthrough will become a problem - this cannot be allowed, switching the engine from gas to gasoline and repairing without preliminary preparation and cleaning of residues can become too dangerous. Possible clogging of seals and other rubber elements with resinous debris, which car owners indifferent to regular maintenance of gas equipment do not clean and do not replace every 50 thousand kilometers. The valve surface itself can be damaged directly by solid deposits (sulphate crystals, metal scale and shavings).

An external leak or the development of an internal one is also possible, when, having overfilled the fuel system itself, the gas breaks out, a drop in the impermeability of the fuel lines (breakage or damage to hoses and gas lines, seam cracks and strong deformations of the cylinder). In addition to the risk of a fire hazard, a leak is dangerous because portions of toxic gas end up in the passenger compartment.

All connecting hoses and tubes are divided into two categories: with increased pressure (starting from 1.6 MPa) and standard (0.2 MPa). In the first case, it can exist in a car in a liquefied state (from a multivalve to entering the evaporator) and operating states (from a gearbox to injectors).

The most dangerous is the loss of gas precisely in the dense phase - after all, in this phase its mass is more than 200 times greater than the gaseous one, and the volumes of an arbitrary exit will be much larger.

The consequence of depressurization of any level is a complex and dangerous problem for repair, regardless of the generation of the equipment and its manufacturer.

LPG computer units of more modern designs and leading manufacturers, for example, Lovato, have built-in diagnostics of the approximate length of the leak, which works by comparing the data of sensors, pressure gauges, a gas level sensor and outlet fuses for this case.