If you pour diesel oil in hydraulics. Why add oil to diesel fuel

03.11.2019

One of frequent problemswhich is connected with the operation of the car in the winter period, is such when the engine froze in the engine after the night parking with a significant decrease in the outdoor temperature. In such a situation, the engine fails to be checked the starter to start or turns so slowly that the motor cannot be started.

How to return the fluidity of lubricant or heat the engine crankcase before starting

Let's start with the fact that the engine can be frozen, prohibited by any available way. It can lead to breakdowns power aggregate, turning inserts, etc. It is quite obvious that when trying to try such a launch, the frozen oil is not pumped up and will not be able to create the desired protective film on the details.

Most. simple way In such a situation, car delivery to a warm garage or parking is not its own move. If you are confident that the oil in the motor is high-quality, then after heating the engine can be started, then get to the car service or independently change the lubricant to more suitable option With amendment to current climatic conditions.
In the list of so-called "grandfathers" methods, it is worth noting the additive of gasoline or diesel fuel to the oil in front of the night parking in winter. This method can also be suitable in the event that immediately change the oil to analogue with a smaller viscosity is not possible. Before the parking lot in the engine "on the hot" through the oil-tank neck is poured, on average, 150 grams of gasoline or purified diesel fuel. Thus, the lubricant becomes less viscous. After starting gasoline from the oil system and the CARTER DVS evaporates. The specified procedure can be repeated before street parking, when the maximum cooling is predicted.

Note, with all its apparent simplicity, this method is characterized by one significant disadvantage - oil after contact with gasoline loses its beneficial features. This means that having solved the problem with viscosity, the problem with the protection of the engine inevitably appears after it is warm up. The addition of fuel into the oil for liquefaction in frost leads to what other loaded elements increase significantly during riding. It turns out if for the old classics of VAZ or unpretentious special equipment on cheap mineral oils such a method is still worth considering, then in the case of a more or less technological engine, it is better to forget about this solution.

Add that even if the old motor, but it was not bad semi-synthetic oil With a package of active additives and other additives, the reaction of these additives on gasoline or diesel oil in oil can be absolutely unpredictable (precipitate, flakes in oil, etc.). All this can lead to blockage of the engine lubrication system and the oil starvation of the motor.

Another way to solve the problem under consideration is the heated of the engine pallet with their own hands. In this case better decision Will use industrial hairdryer. The crankcase pallet warms up a certain time, after which it is necessary to check the oil as of the probe. After returning the yield, the motor can be tried to start. It should be noted that some motorists involve household hair dryers for heating, as well as heaters of different types with closed heating elements.

As practice shows, you can warm the engine in the winter with your own hands different ways. In some cases, the situation is sufficiently common when the gas burner is used to heat the oil in the motor, etc. Soldering lamp, etc. Note that in no case cannot be allowed too intensive drumming of the pallet, since, taking into account the sharp drop in temperature, there may be serious consequences, cracks and other defects. Remember, during such procedures, you must adhere to safety!

That in the end

In order to avoid possible problems With a strong cooling, some drivers replace places in heated parking with such an opportunity. If the machine will spend the night on the street or in the unheated garage, then it is recommended parallel to replacing the oil on the "winter" option to additionally insulate the hood, podcast space and the engine, install the premium heater, use the autorun motor and other available solutions. This will slow down the speed of cooling the power unit and prevent decrease in temperature to a critical mark when the oil in the motor begins to freeze.

To test the quality of the oily oil or compliance with the declared parameters, immediately before replacing is extremely preferably checked viscosity. To do this, some car owners pour some oil into the container, after which they are put in the refrigerator or simply leave a canister with butter in the cold. After 10-12 hours, viscosity is estimated. lubricant. In the event that the oil thickened very much or even hardened, its use is not recommended or involves the use of additional measures for heating internal combustion.

Finally, we note that it should not be attempting (for example, mineral oil with a more liquid synthetic or semi-synthetic with clean synthetics). This may lead to the fact that additive packages in different oils Reactions come into reaction, as a result of which the lubricant is "folded", there is a blockage of oil channels, oil starvation occurs and the engine wear is significantly increased. Even if visually mixed oil is normal, such a material still inevitably loses its protective, viscous, detergents, temperature and other useful properties.

For this reason, it is not recommended to mix the oils of one type (for example, semi-synthetic with the same or different marking from each other) different manufacturersSince each individual brand uses its unique patented additive packages. Add, specialists and experienced motorists advise to avoid this practice of mixing motor oils even within the framework of the production of one company.

Read also

The viscosity of motor oil than the oils with the viscosity index 5W40 and 5W30. What lubricant is better to fill in the engine in winter and summer, tips and recommendations.

Features of the selection of motor oil for winter. What oil among all-season is considered winter on the marking that you need to consider when choosing.

I decided to repeat my message from September. For Linutos wrote.
In order for questions. The topic itself with hydraulic oil is now actively studied.
1. What pouring is a philosophical question. it motor oil It has a permanent operating temperature, and in essence, high oil fluidity at low temperatures are needed only to start. With hydraulics, it is completely different - it should work in a much wider range of temperatures. That is, it should not be very thick in the cold and not be too liquid in the heat. And it must be borne in mind that during the operation, the oil is heated. Oil cooler role is played by oil. In the case of powerful crane installations, oil radiators with forced cooling are already set. During operation, the viscosity of the oil should not be descended below 13 WST and rise above 500 CST. The launch of the hydraulic pump without load is possible up to 1500 CST. The viscosity of the oil, which is indicated in the title is determined at 40 degrees. In any case, the oil temperature should not be increased above 60-70 degrees. At a higher temperature, the oil begins to quickly oxidize, oxidation products increase the viscosity of the oil and cause corrosion of metal parts. Theoretically, it is necessary for cold time to pour oil with a lower viscosity, and for warm with high. Either use a certain all-season oil. Having studied this issue now I will change the oil. Stopped on Mol Hydro Arctic 32 (synthetics). When - 40 viscosity 1000cst, with +70 viscosity 13 CST. Thus, I think that I can use it and with severe frosts, and in the heat.
2. How often to change? As a rule, replacement is recommended every 1000 hours or before the start of the winter (summer) season. The problem in the use of summer and winter Oil I see that the oil does not merge from the system entirely and a lot of oil remains in the system. As a result, a certain burden of summer and winter is formed. In short, the meaning is lost in my opinion. Under our work conditions, the operation for half a year is relatively small and it is simply impractical to change it 2 times a year. Therefore, it decided that it was better to buy expensive synthetics and forget about it for 2-3 years.
3. The replacement procedure is quite simple. It is desirable to change the oil to warm the system as much as possible, draw all cylinder rods, merge the oil from the tank, replace the filter, pour fresh oil. Also check the Sapun. If the oil tank is dirty, then it is necessary to freeze and wash it. Needless to say, when pouring fresh oil should be avoided any mud.
Not so long ago this synthetic in all cars flooded. Even the sound of the hydraulic pump has changed - it became much quieter to work with which it does not understand what it is connected. Explore kinematic viscosity graphs depending on temperature. The question is more serious than it may seem at first.

Practice shows that up to 70% of all the breakdowns of hydraulic systems are caused by the contamination of the system or inhibit foreign particles. All professional mechanics already know that the purity of the hydraulic oil is the key to the long-term operation of the hydraulic system. But cleanness is not all. It is equally important to choose the properly choose the hydraulic fluid and competently replace. Especially this question became relevant for the owners of the technique lately, when prices for foreign hydraulic oils grow, and budgets for maintenance of equipment are reduced.

General recommendations

When choosing a hydraulic fluid, two parameters should be taken into account. First - Temperature ambient When operating. The second is the viscosity of the fluid in the operating range of temperatures. The second parameter is indicated in the operation manual for each specific machine. Some sources state that the viscosity of the recommended hydraulic fluid depends on the type of hydraulic pump, which is used in the system. This is not entirely true. Viscosity for operating temperature It is calculated, based on the bandwidth of the narrowest channels in the hydraulic system, since the hydraulic fluid should have a certain flow rate through these channels, otherwise the hydraulics will not work correctly. Thus, on many building machinesusing the same hydraulic pump models, different types and hydraulic fluid brands are often used.

For example, the so-called "proportional" valves with a very small channel cross section are used in the hydraulic systems of modern excavators. The system is quite complicated, with electronic control components. If it is incorrect to choose the viscosity of the hydraulic oil for such a hydraulic, then the machine will not work in full force. It may reduce the accuracy of performing operations or their speed. The type of recommended oil is indicated, as a rule, in the cabin on special information signs, or directly on the hydraulic tank, next to the filling neck. On modern import technician today, it is most often recommended for the use of HVLP high-index class oil. This is a hydraulic oil with a modern additive package. The additives in the HVLP oil differ significantly from the additive package in the HLP class oils. The oils of this class have more stable temperature and viscous indicators, and in Siberian operating conditions, especially in winter, they work perfectly in any weather. Manufacturers indicate these oils the temperature range of applications from - 30 to +60 degrees Celsius. In addition to stable temperature characteristics, the oils of this class have a multifunctional package of additives that improve antioxidant, anti-corrosion, anti-wear, depressor, demulsifying, anti-liquid properties.

Navy against HVLP

In Russian appliances, two brands of hydraulic oil are also used for a long time: NMGS and MGE-46. These oils have good performance, but only for that technique, which is operated in a relatively light mode: Loaders, excavators-loaders, dump trucks, light cranes. If there is such a need, it is not forbidden to use this oil and in imported technique, which does not work in very harsh conditions. However, it is not recommended to apply oil data in hydraulics, which is controlled by servo drives. If we are talking about hydraulics to which very serious requirements for reliability and performance are presented, then experts are still advised to pay more attention to imported hydraulic oils.

However, not so long ago russian market Domestic products appeared, which in their characteristics practically do not give up modern imported analogues. For example, LUKOIL has released a series of new, highly reliable and highly efficient hydraulic oils a few years ago. In the new lineup of hydraulic oils, LUKOIL, along with MGA and all-season Oil of VMGZ, lubricants of HLP and HVLP classes are already presented. These are hydraulic oils of the LUKOIL geyser, which will come around to the buyer approximately 2-3 times cheaper than imported analogues when absolutely equal quality indicators. The result is a significant reduction in costs and the release of funds for other purposes.

But use in the hydraulics of the so-called "spindle" (industrial oils and-20, and-30, etc.), which is so massively applied in industry, is strictly prohibited. These oils have very high hygroscopicity, that is, when contacting air, they begin to actively absorb water molecules. This leads to disastrous consequences for the hydraulic system, ranging from corrosion and ending with the hydrowards in the system. In addition, in industrial oils there is practically no necessary package of additives that protect the inner surfaces of the hydraulic system from premature aging.

As for preferences in the choice of a particular hydraulic oil brand, then in this question you can fully rely on what is called to your taste. The fact is that essential differences in the composition of the oils of the same class in most manufacturers are not selected. Basic additives for all companies are the same. Manufacturers basic oil All over the world is not so much. The difference in the composition, of course, is. Each manufacturer seeks to allocate some important characteristics of its oil. One bet on temperature properties, the other - on increased protection against corrosion, the third is an increased service life and so on. These are already nuances. About hydraulic oils russian productionwhich are shipped to the market without specifying the trademark, this cannot be said. Therefore, even if you make a choice in favor of oils of the CMGZ class or MGA, it is better to buy products from leading Russian manufacturers (LUKOIL and others).

The choice in favor of one or another brand is often due to the value of the technique itself. The difference in price between oils of one class of different manufacturers can be up to 20%. As a rule, the owners of expensive new cars prefer not to save on oils, especially since during warranty period They are forced to agree on those oils that they offer them in the dealer service center. Buyers and owners of used import cars prefer the Russian leaders of the market for lubricants and foreign manufacturers of the average price segment.

In winter and summer.

Hydraulic oils are not recommended to use year-round. Especially when it comes to used technology. In the pumps with a great degree of wear of the gaps between the driving details more. If the winter oil is also used, the viscosity of which, with severe heating, becomes very low, then the performance of the hydraulic pump will decrease sharply. The oil injected by the pump will simply spill between the plunger and the pump housing. At the same time, not only the pump of the pump is reduced, but also pressure in the system. Work in winter on summer oils It can lead to oil starvation of the pump due to its low pumping. This is especially often on the technique, which is equipped with powerful hydraulic pumps (truck cranes, concrete pumps, excavators, etc.).

Some "craftsmen" to reduce the viscosity of the frozen oil are poured into the hydraulic system some amount of diesel fuel. This leads to very poor consequences. The fact is that during the operation of the hydraulic system, despite the presence of antiposed additives in the oil, air bubbles are formed in the hydraulic fluid. With intensive operation, oil boosts. If fuel is present in the oil, then inside such bubbles instead of ordinary air is formed by almost finished fuel-air mixture. When compressing oil in hydraulic cylinders, absolutely the same process is happening as in diesel engine: The mixture in bubbles under pressure influence flames and very quickly destroys the seals of the hydraulic cylinders. Specialists, repairing hydraulics, when disassembling cylinders, melted seals quite often come across the result - this is the result of adding "diesel" to the oil.

Rules of "Working Hygiene"

Instructions for replacing hydraulic fluid are available from all manufacturers of special equipment. Unfortunately, not everyone reads them, but comply with the units at all. Let us remind the basic rules. Oil should be stored in a closed clean canister. Before the fill of fresh oil from the hydraulicock should be removed all the dirt, which in it was asslaved over the months of previous operation. Pour oil only from pure capacities. The hydraulic systems should be refilled by pumping the oil with the pump, and not fill. In this case, the likelihood of dirt from the surface of the container inside the system is significantly reduced.

Filling the hydraulic systems should be filled through the filter, since the purity of the liquid even in the factory container does not always meet the requirements of hydraulic equipment. Oil, which in contact with air, can be stored no more than two years. If it turned out that you had to drain the oil from the hydraulic system, which did not have time to work out a period (such often happens with different hydraulics breakdowns), then before pouring it back, it will not hurt to analyze its characteristics. It is not so expensive. If we are talking about hard technique with big filling volumes, then this procedure justifies itself.

Why is NMGZ production LUKOIL cost more than competitors?

In fact, everything is very simple. LUKOIL produces oil VMGZ -60, and competitors - VMGZ -45. The difference between these two products is understandable even from their name. Operating temperature NMGZ LUKOIL - -60 degrees, and NMGZ competitors -45. These are absolutely different products, they include different additives, and they have different guests. And, by itself, they are in different ways.

Viscosity, as is well known, is the main qualitative indicator of any hydraulic oil. For all-season hydraulic oil, the "stability" of viscosity is especially important when temperatures decrease. The experience of using both of these "varieties" of NMGS oil shows that the viscosity of the oil VMGZ production of competitors begins to increase already at -30 degrees, and the temperature -45 is "absolutely" critical for it. Simply put, at -45, the oil will simply freeze in the pumps. The Oil of the Navy produced by LUKOIL in this plan is relatively different from the rest, the declared viscosity will be saved and at lower temperatures.

According to the statements of representatives of the LUKOIL, their oil retains the necessary viscosity value and at -60, and even at a lower temperature. That is, the temperature -60 for oil VMGZ production LUKOIL is not critical. But for the quality, as you know, you should always pay. At the moment, the NMGZ production of LUKOIL on average by 20-30% more expensive competitors. However, when choosing a manufacturer, you should always remember that the cost of repair during a breakdown of expensive technique is incomparable with its maintenance costs.

Especially when it comes to used technology. In the pumps with a great degree of wear of the gaps between the driving details more. If the winter oil is also used, the viscosity of which, with severe heating, becomes very low, then the performance of the hydraulic pump will decrease sharply. The oil injected by the pump will simply spill between the plunger and the pump housing. At the same time, not only the pump of the pump is reduced, but also pressure in the system. Work in winter on summer oil can lead to the oil starvation of the pump due to its low pumping. This is especially often on the technique, which is equipped with powerful hydraulic pumps (truck cranes, concrete pumps, excavators, etc.). Some "craftsmen" to reduce the viscosity of the frozen oil are poured into the hydraulic system some amount of diesel fuel. This leads to very poor consequences. The fact is that during the operation of the hydraulic system, despite the presence of antiposed additives in the oil, air bubbles are formed in the hydraulic fluid. With intensive operation, oil boosts. If fuel is present in the oil, then inside such bubbles instead of ordinary air is formed by almost finished fuel-air mixture. When compressing the oil in the hydraulic cylinders, absolutely the same process occurs as in the diesel engine: the mixture in bubbles under pressure is flammable and very quickly destroys the seals of the hydraulic cylinders. Specialists, repairing hydraulics, when disassembling cylinders, melted seals quite often come across the result - this is the result of adding "diesel" to the oil.

Instructions for replacing hydraulic fluid

Replacement instructions hydraulic fluid There are practically all manufacturers of special equipment. Unfortunately, not everyone reads them, but comply with the units at all. Let us remind the basic rules. Oil should be stored in a closed clean canister. Before the fill of fresh oil from the hydraulicock should be removed all the dirt, which in it was asslaved over the months of previous operation. Pour oil only from pure capacities. The hydraulic systems should be refilled by pumping the oil with the pump, and not fill. In this case, the likelihood of dirt from the surface of the container inside the system is significantly reduced. Filling the hydraulic systems should be filled through the filter, since the purity of the liquid even in the factory container does not always meet the requirements of hydraulic equipment. Oil, which in contact with air, can be stored no more than two years. If it turned out that you had to drain the oil from the hydraulic system, which did not have time to work out a period (such often happens with different hydraulics breakdowns), then before pouring it back, it will not hurt to analyze its characteristics. It is not so expensive. If we are talking about hard technique with large filling volumes, then this procedure justifies itself.

Statistics shows that up to 70% of all breakdowns hydraulics caused by the contamination of the system or in the fall of foreign particles. Any professional mechanic knows that the purity of the hydraulic oil is a pledge of long-term operation of hydraulic machines. But cleanness is not all. It is equally important to choose the properly choose the hydraulic fluid and competently replace. We will talk about it today and talk.

When choosing hydraulic fluid Two parameters should be taken into account. The first is the ambient temperature during operation. The second is the viscosity of the fluid in the operating range of temperatures. The second parameter is indicated in the operation manual for each specific machine. Some sources state that the viscosity of the recommended hydraulic fluid depends on the type of hydraulic pump, which is used in the system. This is not entirely true. The viscosity at the operating temperature is calculated, based on the bandwidth of the narrowest channels in the hydraulic system, since the hydraulic fluid should have a certain speed of leakage through these channels, otherwise the hydraulics will not work correctly. Thus, on many building machines using the same hydraulic pump models, different types and hydraulic fluid stamps are often used. For example, the so-called "proportional" valves with a very small channel cross section are used in the hydraulic systems of modern excavators. The system is quite complicated, with electronic control components. If it is incorrect to choose the viscosity of the hydraulic oil for such a hydraulic, then the machine will not work in full force. It may reduce the accuracy of performing operations or their speed. The type of recommended oil is indicated, as a rule, in the cab on special information signs or directly on the hydraulic tank, next to the filling neck. On modern import technician today, it is most often recommended for the use of HVLP high-index class oil. This is a hydraulic oil with a more modern additive package than in HLP class oils. The oils of this class have more stable temperature and viscous indicators, and in Siberian operating conditions, especially in winter, they work perfectly in any weather. Manufacturers indicate these oils the temperature range of applications from - 30 to +60 degrees Celsius. In addition to stable temperature characteristics, the oils of this class have a multifunctional package of additives that improve antioxidant, anti-corrosion, anti-wear, depressor, demulsifying, anti-liquid properties.

Navy against HVLP

Two brands were used in Russian appliances for a long time. hydraulic oil: VMGZ and MGE-46. In principle, these oils have good performance, but only for that technique, which is operated in a relatively light mode: loaders, exfolotes-loaders, dump trucks, lightweight cranes. If there is such a need, it is not forbidden to use this oil and in imported technique, which does not work in very harsh conditions. However, it is not recommended to apply oil data in hydraulics, which is controlled by servo drives. If we are talking about hydraulics to which very serious requirements for reliability and performance are presented, experts advise paying attention to imported hydraulic oils. However, not so long ago, domestic products appeared on the Russian market, which in their characteristics practically do not give up modern imported analogues. For example, TNK a few years ago released a series of hydraulic oils. In the new line of this manufacturer, along with MGA and the analogues of the All-season Oil of VMGZ, lubricants of HLP and HVLP classes are already presented. About quality russian oils This class experts are expressed carefully. He is not praised, but also do not prevent serious complaints. The basis for this oil The domestic raw materials are still served. As not weird service life in these oils is 2-3 times less than that of imported analogs.

As for preferences in the choice of a particular hydraulic oil brand, then in this matter it is possible to completely rely on what is called to your taste. The fact is that there are no significant differences in the composition of the oils of the same class in different manufacturers. Basic additives for all companies are the same. The basic oil producers around the world are not so much. The difference in the composition, of course, is. Each manufacturer seeks to allocate some important characteristics of its oil. One bet on temperature properties, the other - on increased protection against corrosion, the third is an increased service life and so on. These are already nuances. About the hydraulic oils of Russian production, which are shipped to the market without specifying the trademark, cannot be said. Therefore, even if you make a choice in favor of oils of the CMGZ class or MGA, it is better to buy products of leading Russian manufacturers (LUKOIL, TNK and others). The choice in favor of one or another brand is often due to the value of the technique itself. The difference in price between oils of one class of different manufacturers can be up to 20%. As a rule, the owners of expensive new cars prefer not to save on oils, especially since during the warranty period they are forced to agree on those oils that they offer them in the dealer service center. Buyers and owners of used import cars prefer the Russian leaders of the market for lubricants and foreign manufacturers of the average price segment.

The most important rule when choosing the applicable oils is, firstly: to be guided by the instructions of manufacturers of equipment, which are guided primarily on generally accepted international standards (SAE, ISO.); And secondly: from all products satisfying the stated requirements, give preference to the most authoritative trademarks and reliable suppliers. Otherwise, malformations are possible. Currently, SELECT Lubicants produces hydraulic oils of the SL-Hydraulic series applicable in all cases when high-quality reliable hydraulic oil is needed, which has a high viscosity index and capable of working in a wide range of temperatures and pressures in the most adverse climatic conditions.

The material was taken from the site http://hydrac.ru/

Hydraulic mechanisms do not work without the use of specialized lubricant. With it, mechanical energy is transferred to the place of consumption. Oil compression changes the values \u200b\u200bof the applied force. Simply put, hydraulic oil provides correct and efficient functioning of hydraulics.

High-quality lubrication fluid extends the life of hydraulic equipment even with its work in extreme conditions.

Basic properties

Oils for hydraulics must have certain properties in order to execute the claims:

Antioxidative.
Viscous temperature.
Antiphen.
Demulsifying.
Filtering.
Anti-wear.
Anticorrosive.

In the presence of listed properties, the hydraulic lubrication is resistant to oxidation and viscosity that allows you to work in various temperature modes. A long service life at high loads is provided by minimal foaming, protection of the system from garbage and the ability to separate water. The composition of the oil includes antioxidant additives that reduce energy costs on hydraulic drive.

Viscosity

The viscosity of the oil for hydraulics depends on the type installed pump And divided into three categories:

Optimal.
Minimum.
Maximum.

The minimum viscosity indicator is most important at the time when the hydraulic system is sweeping as possible. This property does not allow lubrication to go through the seals. The maximum level of viscosity, on the contrary, is important at low ambient temperature. This indicator is required for pumping lubricant over the system. When selecting oil, it is necessary to take into account the technical characteristics of the pipeline and the power of the pump. Optimal viscosity combines all basic requirements and allows you to reduce losses to a minimum. It is impossible to mix different viscosity oils.

Classification of oils

Taking into account the area of \u200b\u200buse of lubricants, they are classified as working fluids for hydraulic systems of different types:

Aircraft, river, terrestrial and marine equipment.
Shock-absorbing and hydrocratic devices.
Industrial equipment.

The oil is classified by type of production - synthetic, mineral with additives and without them. Lubrication can also differ in color characteristics: for example, synthetic and mineral oils They have red and can not be mixed with each other. Oils of yellow, on the contrary, can be mixed with red oils. The synthetic substances of the green shade can not be mixed with other lubricants. Similar limitations are imposed on mineral oils of the same color.

Hydraulic system imported cars refilled with synthetic lubricants - polyglycol, polyalphaolefin, esters. The advantage of liquids is the high quality and stability of the viscosity index, providing a long service life of the system without a decrease in its performance. Oils for hydraulics of foreign and domestic production can not be mixed.

Nuances

To ensure uninterrupted operation of hydraulics, lubricant must comply with certain standards:

In the territory of Russia, GOST is adopted that meets international standards. Hydraulic fluids Complies number 17479.3-85, consisting of three groups of signs that label the scope of operation, the name and class of viscosity.
The hydraulic mechanism works when high temperaturesAccordingly, the oil outbreak temperature for hydraulics should be high, in contrast to the freezing temperature - it should be very low.
Lubricants are thoroughly filtered, but polymer additives are accumulated on the filter element, which are added to the composition to increase the viscosity index. IN emergency situation This is noting a pressure sensor. When replacing oil in hydraulics, the filter state is required and, if necessary it is replaced.
The quality and state of the seals must be regularly checked in order to avoid leaks. The material from which they are completed should be compatible with the oil used. It is advisable to choose branded seals developed for specific hydraulics.
Oils intended for different hydraulic systems, it is impossible to mix.

Marking of hydraulic oils

The classification of lubricants depends on the scope of use. Select eight types of oils:

Navy. A brand intended for hydraulic mechanisms of cars operating in open areas.
Mge. Lubricating fluids for agricultural machinery, including oils in mTZ hydraulics - tractors and excavators.
A. Brand for hydrotransformers and automatic transmissions.
R. Lubricant for hydraulic switching and steering.
AUP. Lubricant for ground and sea special equipment. Designed for lifting gear.
Ay. Relieved oil with low temperature of frozen. The main application is the machines operating at high speeds.
Gt. Oil for diesel trains, in particular - for turbo stitches.
Ash. Liquid for hydraulics operating under high load.

When choosing what oil to pour into hydraulics, it is necessary to take into account not only the manufacturer's company, but also the correspondence of the liquids with the specified technical characteristics of the drives.

Hydrocracking technology

Oils are manufactured not only on the synthetic and mineral base, but also on hydrocracking. Similar working fluids have better parameters and characteristics due to the used complex cleaning technology. Hydrocracking oils are practically no different from synthetic, and therefore manufacturers usually do not indicate the method of their manufacture. It does not affect the quality. Oils are used in multiclapped engines equipped with hydraulic components.

Application area

The hydraulic system should only be operated on clean and high-quality oil. The filtered spent agent is prohibited, otherwise the system may fail.

An important point is to replace the oil in the hydraulic mechanism. To do this, use the filter and the pump - only when they are used, the dirt is sent to the system.

Replacing lubricant is carried out in the following cases:

Natural additive wear, leading to fluid leakage.
Poor oil condition based on express control.

In order to avoid expensive repair of the entire hydraulic system, it is necessary to replace the oil in a timely manner. Mix liquid different colors and different manufacturers is prohibited. When mixed, the viscosity index must necessarily match.

Features of hydraulic oils

What kind of oil to fill in the hydraulic? Lubricating fluids for mechanisms should be taking into account temperature and viscous properties. Using too viscous oil can provoke a decrease in the efficiency and system power, which will increase the load on the equipment. The density of the oil used directly depends on temperature modein which the hydraulic system is operated. This criterion is indicated in the hydraulics passport and is necessarily taken into account when choosing a lubricant.

The oil is selected depending on the season of operation. In the cold season, winter hydraulic oil is used, which has the appropriate characteristics.

Anticorrosive and antioxidant properties play no less role in the selection lubricant. These characteristics affect the corrosion wear of the mechanism and the formation on the walls of the deposits.

Advantages and disadvantages

82 oils poured into the MTZ hydraulics possess their advantages and disadvantages. The first is the protection of the parts of the mechanism from corrosion and wear, efficient energy transfer, the ability to operate in a wide range of temperatures, preventing the formation of plaque.

In the presence of pollution and third-party impurities, the oil can bring the car in order to either cause serious damage. The safe operation of the hydraulic oil is possible only after its thorough filtering.

Hydraulic oil "Gazpromneft hydraklik"

Designed for use in domestic and imported hydraulic systems of industrial equipment, operated in conventional and hard modes and requiring alloyed oils with high levels technical characteristics and optimal filtrapist.

Possesses the following properties:

Improved demulsifying, anti-corrosion and antipine characteristics.
High anti-wear properties that provide long-term operational service life.
Optimal viscosity properties that support the constant level of viscosity in a particular temperature range.
Excellent thermo-oxidative properties that increase the working oil resource.

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