It is no secret to anyone that in the construction industry, grinders (or angle grinders) can be safely attributed to the number of the most popular tools. You need to cut various materials(tiles, stone, sheets of metal), or perhaps to grind the sections? In this case irreplaceable assistant an angle grinder will be in operation.

The correct choice of lubricant for the angle grinder gearbox is the key to excellent tool performance

The gearbox is one of the most important elements LBM. It converts the higher angular velocity occurring on the input shaft to the output shaft speed, thereby increasing the torque. The coefficient largely depends on the success of the gearbox operation useful action power tool, which as a whole determines the performance of its work. It is known that to increase the efficiency of the tool, it is necessary to reduce the friction between its individual parts and provide heat removal (during operation, the angle grinder heats up strongly). The functions of reducing friction and removing excess heat are performed by the lubricating fluid, which is why the question of which lubricant to lubricate the angle grinder gearbox is of interest to both professionals and home craftsmen.

Note that any lubrication only reduces friction, but does not completely eliminate it, therefore, during the operation of the mechanism, the smallest particles of parts still get into the oil. Over time metal dust accumulates in the lubricant, which, as a result, loses its viscosity and can no longer perform its function as effectively. Thus, the viscosity of a lubricant is the main indicator that should be paid attention to when purchasing it. No less important point- the frequency and timeliness of replacing the lubricating fluid.

Most manufacturers of coal grinding machines v technical documentation, in addition to all the parameters of the device, the type of lubricant recommended for use is indicated. For Bulgarians renowned manufacturers as a rule, proprietary lubricants are required. Otherwise, if the tool breaks down, its owner cannot count on free warranty repairs. When the warranty period expires, experts recommend continuing to use branded lubricants, but many in this case switch to Russian counterparts, which are cheaper.

In general, the requirements for the lubrication of power tools are very strict:

• it must ensure the normal functioning of the tool even at very high loads and temperature drops;
• throughout the entire service life, it must retain a good lubricating effect;
• it must fully meet the requirements of environmental safety.

So, how to lubricate the gearbox on the grinder?

Experts advise using formulations that have the consistency of liquid oil. They are poured into angle grinders in a strictly defined quantity. During operation, the lubricant is evenly distributed over parts and assemblies. Some of the most renowned manufacturers of gear oils include Bosch, Lubcon, Hammer, Makita and Hitachi.

Plastic compounds are also used to lubricate gearboxes, but do not forget that not all models of angle grinders are able to function stably on products with a similar consistency.

Experts do not recommend using lithol and solidol for lubricating the gearbox, although they are not capable of seriously damaging the tool. Those who nevertheless use these funds should remember that the period of "effective work" for lithol is much shorter than that of branded lubricants, therefore, it should be changed more often.

When deciding on the choice of the optimal lubricant for the grinder, pay close attention to products based on silicone or silicone oil... They are suitable for angle grinders operating under various loads in a fairly wide range of speeds. They are distinguished by high level resistance to oxidation and corrosion, they are also quite easy to combine with elastomers and plastic. Thanks to the presence of only lithium thickener and silicone, these lubricants are environmentally friendly.

Many people ask the question: what kind of original grease is used to lubricate Makita angle grinders gearboxes? Of course, most experts agree that the best option is the choice of "native" grease (eg Makita 181490-7). However, if someone thinks that the necessary lubricant for the Makita grinder is exclusively the products of this well-known corporation from the Land of the Rising Sun, he is not entirely right, since high-quality oils from other well-known companies may well be suitable, but only if they have similar characteristics.

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Guaranteed long life for anyone hand tool consists in its correct periodic maintenance. Of course, you can give it to special service centers for maintenance and diagnostics, but, as they say, "If you want to do well, do it yourself." Therefore, it is worth figuring out how to independently service such a popular tool among home craftsmen as an angle grinder or a grinder in the common people.

The moving parts of angle grinders are most susceptible to wear. These are the bearings of the armature, gears, as well as the gears themselves, which are in the gearbox. The lubricant (or lubricant) put in by the manufacturer ages over time, its properties are lost, all this leads to greater wear of the gears in the gearbox and, as a consequence, to increased vibration and the appearance of extraneous noise during operation. Periodic maintenance and replacement of the lubricant in the angle grinder gearbox must be carried out at least once a year.

Characteristics and features of greases for grinders

When servicing any hand tool where there are moving parts, it is used lubricant having the following characteristics and features:

• It should not contain solid particles that can cause chipping of the moving parts of the mechanism.
• The temperature at which the lubricant becomes liquid must be over 120 degrees.
• The oil should not absorb moisture, it should form a strong film that protects the parts from corrosion.
• And also, most importantly, the oil must be of such a viscosity that it has the ability to hold onto moving parts.

The consistency or viscosity of greases is classified according to the NLGI (National Lubricating Grease Institute), and in certain cases it is necessary to use an oil of a certain density. The viscosity of the oil is selected depending on the speed of the gearbox; the higher it is, the more liquid the oil should be. So, depending on the tool, the viscosity is selected:

• Drills, hammer drills, jigsaws, where the gearbox has low speed rotation. NLGI-2 grease which is soft.
• Lightweight rotary hammers and impact drills. NLGI-1 grade, very soft in consistency.
• Angle grinder, circular saws, brushcutters. NLGI-0 grade, semi-liquid in consistency.
• Heavy hammer drills, jackhammers... NLGI-00 class, liquid in consistency.

Lubricant for the LBM gearbox

Almost all global tool manufacturers require the use of their recommended "in-house" lubricant, sold under its brand. In principle, this is correct. The grease used for the grinder gearbox, in this case, is tested at the manufacturer, it guarantees a long-term and correct operation of the angle grinder. However, there are drawbacks here, which are the high price of lubricant from these brands.

In addition to original oils, there are many lubricants produced by third-party manufacturers on the market, so the question of how exactly to lubricate the grinder's gearbox is not acute.

The products of Haskey, Castrol, Liqui Moly and others have shown themselves well for adding to the grinder gearbox.

Russian manufacturers also keep up with foreign ones and offer their products. Thus, the lubrication of the bevel gearbox LBM from the Nanotech company is very popular. Of course, such a lubricant for the gearbox is not original and recommended by the manufacturer, therefore, if it is used, the subsequent warranty repair may simply be refused.

Correct grease filling process in angle grinders

After the choice of grease for the grinder is made, they proceed directly to the maintenance of the tool. The correct process for servicing a grinder consists of several steps. First you need to open the gearbox, then remove the old lubricant, apply a new one, check the correct application. Removing the old grease is necessary for the reason that mixing with new grease will prevent it from working properly and the entire maintenance procedure will not bring any result.

When to change the lubricant in the grinder

The frequency of changing the lubricant depends on how often and under what load the tool is used. As a rule, this interval is about a year. In the case of intensive use with frequent overheating, the replacement frequency is reduced to six months, sometimes more often.

To carry out maintenance, you will need to disassemble the angle grinder gearbox by unscrewing 4 screws on its cover.

After removing the cover, you can see two helical bevel gears: a large and a small gear. The small gear is anchored and drives the large gear. The large one, in turn, is seated on a secondary shaft, to which a cutting or grinding disc is attached.

How to properly remove old grease in a grinder

The disassembled grinder gearbox must be well cleaned of old lubricant. It no longer fulfills its functions, plus solid particles have already accumulated in it, resulting from wear of moving parts. Mixing with new, old lubricant also significantly degrades its performance. Therefore, the gearbox and gears must be thoroughly cleaned.

Remove old grease with a rag, paper towel, or just a rag. The removed parts can also be washed in gasoline or thinner. The washed parts must be thoroughly dried before assembly. Residual solvent or gasoline will mix with the new grease and change its consistency, which will again impair its performance.

The procedure for applying lubricant to the grinder gearbox

Before applying new grease, it must be thoroughly mixed and made sure that there are no lumps or foreign objects in it. Apply a thin layer of lubricant to the gears, making sure that it completely covers the teeth. It is more convenient to fill the grease inside the bearings with a syringe. Then the grease intended for angle grinders is hammered into the gearbox housing. This is necessary for the reason that during operation it can fly off the gears and with a small amount of it, the gears will run "dry".

What amount of lubricant should be used when replacing the angle grinder in the gearbox

The amount of lubricant put into the gearbox must be such that the oblique teeth of the gears are completely covered by it. An excess will cause it to be squeezed out from under the cover, and an insufficient amount will not ensure correct operation of the gearbox.

It is best to be guided by the quantity that was set at the factory by the manufacturer of the angle grinder, but remember that the grease can dry out, while decreasing in volume.

In this regard, it is better to put a little more and check the correct distribution of the lubricant after turning on the grinder. In general, the amount of lubricant is usually about 30-50% of the full capacity of the gearbox.

Control of the correct application of lubricant to the LBM gearbox

The final step in servicing your angle grinder is to check that the lubricant is correctly applied and distributed inside the gearbox. To do this, after the gear unit is assembled, the power tool is turned on without load for several minutes, while ensuring that there are no extraneous sounds, smell and other things. If they occur, you must immediately disconnect the grinder from the network. The heating of the gear unit is also checked. The lubricant must distribute heat evenly and the temperature of the gear unit must not be too high.

After a short work, unscrew 4 screws, then remove the cover from the gearbox. Visually inspect the helical gears for grease. If it is absent, then too little lubricant has been loaded and should be reported. If in the process of work it squeezes out of the cracks, then it was laid too much and the excess should be removed. After making any changes, check again the operation of the grinder without load.

Overview of lubricants for grinders

Earlier it was said that there are many types of lubricants from both a foreign manufacturer and a domestic one. A good lubricant for power tool gearboxes is available from Bosh. It is called "Gear Lubricant" and is packaged in tubes of 65 grams. One such tube is enough for several grinder services.

Of the lubricants intended for the grinder gearbox produced by a domestic manufacturer, we can recommend the products of the Nanotech company. It is called "Nanotech MetalPlak Electra" and is intended for tools that work with intense load. And also from domestic lubricants, SHRUS or Tsiatim-221 are widely used, but they require preliminary preparation and are, in fact, a homemade lubricant.

Do-it-yourself grinder grease

A do-it-yourself grinder gear lubricant consists of a base and a thinner. The basis of a homemade lubricant is usually a CV joint with molybdenum disulfide or Tsiatim-221. They have a second viscosity according to NLGI, therefore, for use in the gearbox of an angle grinder, the base must be thinned. As a diluent, it is best to use a simple industrial mineral oil, which, for example, is I-20 oil. To obtain a viscosity of NLGI 0, you will need to mix approximately 70 percent base and 30 percent thinner. The resulting mixture is thoroughly mixed and ready to be applied to the gears and bearings of the angle grinder.

Timely maintenance of any electrical tool is the key to its long-term and trouble-free operation. A properly working tool is also a guarantee of safety for the person using it. Using the tips given above, everyone can choose the right lubricant for the angle grinder gearbox and replace it without resorting to expensive service centers maintenance of the power tool.

Any power tool contains rotating parts that are subject to increased wear as a result of friction. It is possible to prevent their premature destruction and extend the service life of the tool if the rubbing parts are prevented in a timely manner. In the grinder, they are subject to the main wear gear reducer... The harmful effects of friction can be reduced by applying lubricants to the surface of parts. Consider which lubricant for the grinder gearbox is better to buy.

With intensive daily use of the grinder, the lubricant in the gearbox should be replaced at least once a year. Often, users do not adhere to certain periods of preventive maintenance of the tool, and routine maintenance is carried out after the appearance of extraneous sounds during operation. This is a completely inappropriate method of caring for the gearbox.

The grinding noise during rotation, the rattling sound indicates that the gears have formed a development, and they will soon have to be replaced.

Preventive inspection of the gearbox begins with the separation of its casing from the rest of the grinder. To do this, just unscrew the four fixing screws.

On next photo it can be seen that there is grease in the case, but it has gathered on one side of the case, and it is not enough.

This is because the angle grinder (angle grinder) works at high revs... Under the influence of centrifugal force, oil particles tend to move away from the axis of rotation. With prolonged operation, the surfaces of the gears become completely dry, and without lubrication, the metal is erased. In this case, it is enough to lubricate the gear teeth with the existing composition, then close the gearbox and work until the next maintenance.

Often in the gearbox you can see grains of oil mixed with dust... During operation, the grinder heats up, and these grains are sintered, solid particles interfere with the operation of the mechanism. This grease must be replaced.

How to lubricate the gearbox

The choice of lubricant for the gearbox has some peculiarities. The rotational speed of the angle grinder is high, the liquid oil will simply fly away from the rotating parts. The thick composition must withstand quite high temperatures and do not bake.

Ready grease

Power tool manufacturers advise using special formulations own production... Such recommendations are given, in particular, by the firms "Makita" and "Bosch".

You can buy such funds, but their cost is quite high, and the costs are not always justified. Firm "Interskol" more democratic to the type of materials used. What is the best lubricant? Lubricant for the grinder gearbox must meet certain requirements:

• the viscosity of the composition does not exceed 800 Pa * s;
• the temperature of droplet separation from the bulk is not less than 120 ° C;
• homogeneous composition without the presence of mechanical inclusions;
• resistance to moisture.

The industry produces many types of lubricants, including special formulations for use in gearboxes. Best results show mixtures containing molybdenum disulfide as an extreme pressure additive. If we talk about foreign manufacturers, Castrol and Mobil have proven themselves very well.

For ease of use, Mobil places products in syringe-shaped tubes.

From domestic brands MC-1000, Limol can be noted. The use of solid oil, lithol or Tsiatim-221 does not give the desired result.

Homemade mixes

If the necessary lubricant is not available for sale, or if the user considers the price of the product to be unreasonably high, you can try to make the lubricant mixture yourself. There are several formulations using different bases. One of them is common

Transmission oil TAD-17 is added to the container with Tsiatim. Stirring continuously, add the oil one drop at a time until the required consistency is achieved. The mixture should adhere well to the parts, not be too thick and not flow like liquid oil.

Another base can be grease for SHRUS in combination with MC-20 liquid oil.

How to lubricate the gearbox

It is impractical to add the missing amount of oil to the gearbox housing: mixing occurs good composition with the already used one, and the new grease loses its effectiveness faster. Therefore, when the gearbox casing and its housing and the cover are removed, the remnants of the old grease are removed. First, dry rags are used, and then the traces are washed out with gasoline or kerosene. After the parts dry, new grease is applied to them, while the gearbox housing is filled with grease by 2/3 of its volume.

After assembling the grinder, its shaft is rotated several times by hand to evenly distribute the oil. The rotation should be uniform, without jerking or jamming. After making sure that everything is fine, plug the device into the network and get to work. With timely prevention, the tool will serve for a long time.

The question of how to lubricate the gearbox on the grinder sooner or later is asked by all the owners of this widespread in everyday life and in professional activity tool. Almost every experienced craftsman has his own personal, time-tested opinion on this matter. Some regularly use lithol and solidolm, others buy grease for SHRUS in car stores, and still others use specialized services. It should be said right away that these approaches are not equivalent, since not all of them provide optimal uninterrupted operation of the device.

How important is lubrication?

In order for the angle grinder to fully perform its functions and not cause any problems, its maintenance must be approached with great responsibility. Depends on the quality of the lubricant effective work grinders under heavy loads, the duration of the successful use of technology and environmental safety.

Before deciding what kind of grease to lubricate the angle grinder gearbox it is necessary to learn that this element is one of the main parts of the angle grinder... During the operation of the equipment, it heats up a lot, so heat dissipation plays a huge role. To some extent, this is facilitated by the fact that its casing is made of metal, but great importance has the correct lubrication. If a master has bought a high-quality, highly reliable instrument, for example Makita, he is simply obliged to monitor it and pay due attention to it. Otherwise, the equipment will not be able to show itself at full capacity and will not serve the entire period for which it is designed.

What is the best lubricant to use in practice?

In the opinion of the overwhelming majority of experts, the required lubricant for the grinder must correspond to the manufacturer of the device used. That if the technique is released under a certain brand, then the lubricant must be chosen the same... This option is optimal, since the development of such materials is carried out by specialists who take into account all the features of a particular device. For the unit to work with maximum efficiency and for a long time it is better to use original lubricants. This approach will save the owner of the grinder from many unnecessary problems associated with the maintenance of the tool and with its use.

If the master, for some reason, is not able to use the optimally suitable lubricants, then the second preferred option would be grease for CV joints. It also allows you to achieve good results and is used by many on an ongoing basis. Finding it on sale is quite simple.

The worst way to keep the gearbox in good condition is to use grease and lithol. It should be said right away that many do not disdain these materials either, but you should not rely on the full-fledged operation of the instrument. Even if the difference is not visible for short periods, after a while the master is likely to run into problems.

If, nevertheless, the user chose the most The best way to take care of your angle grinder, it is worth deciding which original grease is used to lubricate Makita angle grinders gearboxes? Or if a device from another manufacturer is used, then in accordance with it. This will create the most favorable conditions for long-term and high-quality operation of equipment and in order to solve the corresponding problems with the maximum possible results.

How to service angle grinders under warranty?

If the grinder has not yet expired the warranty period, then there are no problems with lubrication at all. Regardless of the manufacturer of the tool, it is best to entrust the described work to the appropriate workshop.

For example, what materials are used to lubricate the gearboxes of Makita angle grinders?

Specialists, as a rule, know this much better than ordinary users and can do everything with the maximum efficiency that is possible in each specific case. In addition to the fact that high quality materials are used, professionals have the most correct idea of ​​the dosage with which to use them, which also significantly affects the final result. At home, even the most suitable lubricants can be applied incorrectly and thus cause some damage to the instrument.

An important point is also that inappropriate lubrication for technology strongly violates the rules for using an angle grinder. In the future, this may well become the reason why the services will refuse to service the grinder. Workshop services can also be used when operating devices that are no longer under warranty. This is a pretty good approach to keep your equipment in top condition. Most technicians, as a rule, do not do this, since they are used to lubricating the gearbox on their own and believe that there is no point in wasting time visiting services.

In conclusion, it should be said that it is strictly forbidden to leave angle grinders without any lubrication... At first, this will lead to some problems with the operation of the grinder, and then the gearbox will simply fail. It is quite difficult to change it and in many cases it will be preferable to purchase a new unit. Some inexperienced and irresponsible users have already managed to make sure of this in practice, but after buying a new tool, they radically changed their attitude towards timely service.

As you can see, lubrication of the gearbox during the operation of angle grinders is a fundamentally important issue that cannot be neglected. Only a timely and correct solution to this problem allows you to maintain the equipment in a full-fledged working condition.

It is referred to in a simple way as a grinder. With this tool, wizards perform many operations. He, like any other equipment, requires full service. Moving parts need lubrication. For this, special means are used.

There are several options,. Advice experienced craftsmen help to choose optimal way... At the same time, the grinder will work for a long time and efficiently.

The role of lubricant

The manufacturers of the presented power tools in the manufacture of the tool mechanism provide moving, rubbing parts with a special lubricant. The composition of such products may differ. Therefore, being interested in how to lubricate the grinder gearbox ("Devolt" this or another brand), you need to look at the instructions. The manufacturer can give a clear definition of the formulation options that are allowed to be used when servicing the equipment.

Under heavy loads in which the equipment has to function, as well as when high temperatures heating lubricants prevent premature wear of metal parts.

Special components allow the excess heat to be removed from the rubbing steam. Also, many manufacturers provide for such an important function of their products as anti-corrosion effect. The complexity of the action allows you to ensure the full operation of the tool, to extend its operation for many years.

Specifications

To have an idea how to lubricate the grinder's gearbox ("Interskol" is it or products other manufacturers), you need to consider the features of this tool. They affect specifications that the lubricant should have.

The main and most loaded unit of the grinder is the gearbox. It consists of gears of a certain configuration. Correct lubrication can reduce frictional force and heating of moving parts. For this, the consumable must have a viscosity of no more than 800 Pa * s. Its dropping point must be at least 120 ° C. The recommended tensile strength is 120 Pa. This allows the agent to form a strong film on the surfaces of the parts.

The lubricant must be composed of naturally soluble components. She shouldn't harm environment and human health. Means of proven well-known manufacturers have the appropriate quality certificates, therefore it is they that are recommended to be used for servicing the tool.

Signs of grease aging

Interested in how to properly lubricate the gearbox in the grinder Signs of grease aging should be considered. If the master disconnects the gearbox from the angle grinder and looks inside, he may see clear signs of the need to change the composition.

During operation of the unit, lubricant splashes and settles in a dense layer on the inner walls of the housing. Over time, the substance dries up. This creates lumps. This indicates the need to change the lubricant.

As the temperature rises, the lubricant becomes more fluid. It can spread out leaving the gear mechanism. To prevent friction, its amount must be controlled. If there is no thick layer of grease on the gears, then it's time to change it. Otherwise, the tool will quickly fail.

Foreign lubricants

To decide how can you lubricate the grinder gearbox a number of expert recommendations need to be considered. They argue that you should choose the oil that is produced by the manufacturer of the equipment. Such formulations are not cheap. However, they have a balanced set of additives that provide long work LBM. If the user of the equipment purchases other lubricants to service the power tool, the equipment may not even be covered by the warranty.

However, if you wish, you can replace the formulations recommended by the manufacturer with similar products. For foreign models of angle grinders, means containing additives identical to those used by the manufacturer of the grinder are quite suitable.

If molybdenum was present in the lubricant, it is necessary to purchase a composition labeled MoS2. For grinders that are served by consumables of the second viscosity class, the NLGI2 composition is suitable. The ISO standard corresponds to greases marked ISOL-XBCHB 2. If the agent was manufactured according to the German quality standards DIN, the new oil must contain the indication DIN 51825-KPF 2 K-20 in the marking.

Domestic lubricants

Considering, how to smear the gearbox of the grinder domestic production, it is necessary to pay attention to the compositions of local manufacture. Today Russian companies offer wide choose similar funds. They are distinguished by an affordable price.

Modern domestic materials for lubrication of the angle grinder gearbox are characterized by high quality. They meet high foreign standards. They are used not only in grinders, but also in other types of power tools.

The products of the Nanotech Metal Plak Electra company are especially popular. However, there are other types of service compositions for any unit of the grinder, including the gearbox.

Experienced specialists provide recommendations, the better to lubricate the grinder gearbox... They argue that if it is impossible to service the tool with a branded lubricant, you can choose a different composition. The second most popular grease for CV joints is recognized in our country. It is most often used for domestic-made tools. Some masters choose grease for CV joints and for foreign angle grinders. However, the quality of the original formulations will be significantly higher.

It is worse if the master gave preference to such compositions as lithol or solid oil. it universal remedies... They are not capable of high-quality service of the grinder's gearbox system. When using them, the work of the tool will not be able to be complete. At the beginning of operation, the difference will be imperceptible. But over time, serious problems may appear in the operation of the unit.

Preparing for a grease change

After exploring the options, how to anoint the grinder gearbox, it is necessary to delve into the process of applying a new composition to the elements of the mechanism. Follow the power tool manufacturer's service plan for this procedure. This must also be done when replacing gearbox parts or rotor bearings.

The processing will have a dirty color. This is due to the ingress of metal and dust particles into it. Before lubricating the gearbox, it is necessary to remove the old oil from the surfaces of the mechanisms. The working off is removed completely.

Automotive engine cleaners are suitable for this procedure. You can also use kerosene or gasoline. With the help of these means, traces of old grease are completely removed from the surfaces of all parts. After processing, the gearbox must be thoroughly dried. Only then can you start refueling.

Gearbox maintenance

Having chosen, and also prepared for this process, the mechanism, you can start servicing the tool. The product must be mixed thoroughly. It is applied in a thin layer to the gearbox parts. The mass is applied to the bearings using a packing method.

If the product is packaged in a tube, its neck is placed on the side of the bearing cage. The composition is poured inside until it flows out from the other side. The gearbox is filled with enough grease to cover the gear teeth. The surplus will flow out during the operation of the grinder. Lack of lubrication leads to increased heating and friction within the mechanism.

Experts recommend putting in such an amount of the substance so that it takes up almost half of the space of the gearbox housing. In this case, the operation of the tool will be correct. The manufacturer may indicate in the operating instructions some of the nuances of this process. They should also be taken into account in the process of servicing angle grinders.

Control

Having studied, how to lubricate the grinder gearbox, a procedure for monitoring the correct maintenance of the tool should be considered. LBM must be collected and connected to the network. When starting the motor, the quality of filling the gearbox with grease is assessed. To do this, the grinder is put in idle mode for a short time.

If the gearbox begins to heat up after the test, and traces of grease appear from the gaskets, then there is too much substance in the mechanism. After disconnecting the tool from the mains, it is necessary to open the gear cover. Excess oil will be observed on the walls. They are removed from the equipment cavity.

If extraneous noises appeared in the test mode, insufficient lubrication was applied. In this case, the tool is disassembled, and an additional amount of the composition is introduced into the gearbox. Then the verification procedure is repeated. If everything is in order, the tool can be used normally.

Having considered, how to lubricate the grinder gearbox, as well as the procedure for this process, each master will be able to service his technique independently without any problems.