UAZ, gearbox: maintenance. Choosing oil for the uaz patriot gearbox Checking the level and refilling

A car consists of many components and assemblies. The transmission is one of the most important components in a car's design. Like any other unit, it needs regular maintenance. Today we will look at how the gearbox is serviced (including UAZ Patriot) on the cars of the Ulyanovsk Automobile Plant.

Appointment

What is this node for?

The task that the gearbox performs on a UAZ car is to change the traction force of the driving wheels (of which there can be four on all-wheel drive) by means of the engagement of different gears. The latter have a different number of teeth. One of them works in reverse - that is, moves the car backward.

Main points when servicing

During the operation of the UAZ vehicle, the gearbox must undergo regular inspection. The first thing to look out for is oil leaks. When lubricant flows from under the car during parking, and characteristic noises and howling occur during movement, it is necessary to urgently check the level of the remaining fluid in the system. If it is new (UAZ), the oil in it changes immediately after running in. Usually it is 2-3 thousand kilometers.

How to do it?

First you need to unscrew the plug from the hole. It should be noted that there are several of them. The first one, located in the middle of the box, is for the bay, and the one below is for draining the liquid. Unscrews, as in most domestic cars, with a hex wrench. Before this, you should prepare in advance a container where the old oil will be drained.

It can be made from an old canister by cutting off the side of it. After draining the fluid, the gearbox (UAZ "Loaf" is no exception) goes through the flushing process.

Flushing

To do this, you need 500-700 milliliters of "mineral water" (not to be confused with water - this is oil).

Screw the hole in from the bottom and pour it into the transmission through the top neck. Let the car idle for a while (4-5 minutes will be enough). Transmission gears must be in neutral. Next, we turn off the engine, substitute our canister and drain the oil by unscrewing the bottom "hatch". Also remember that you cannot drive on, due to its low viscosity - this can lead to scuffing, and, as a result, you will have to repair the UAZ gearbox.

How much to pour?

New liquid must be poured until it starts flowing from the upper "hatch" - this is a signal that the level is at the maximum mark. By the way, the remainder of the liquid is checked according to the same principle - using a hex key, unscrew the upper plug and look at the remainder with a dipstick. Even a wooden twig or a long nail can serve as a probe. The main thing is that the item is clean. If there is not enough oil, add it (but do not mix with different brands). Typically, UAZ vehicles use Lukoil or its analogue, consonant with the name, Yukoil.

How often should the level be checked?

This operation must be repeated at least once every ten thousand kilometers. As we said earlier, if there is a missing level, it must be refilled. By the way, the level is checked only on a cooled transmission - so all the oil will drain into the crankcase.

More about replacement

The operating manual says that after (this also applies to freshly repaired units), it is necessary to change the oil not only in the transmission, but also in the front and rear axles, since we have an all-wheel drive car. The volume of flushing "mineral water" must be at least 75 percent of the total in the unit, which is required by the manufacturer. Ideally, pour until it flows out.

The complexities of the bay

Surely, the owners of UAZs were faced with the problem of the impossibility of filling oil. For this you need to try hard. Fortunately, motorists share their advice, and the procedure becomes much easier. Many drivers recommend using a long metal syringe with a curved rubber nozzle for this. Its capacity should be at least 300 milliliters. We also note that the gearbox requires the use of a viscous oil, so it will be difficult to fill it - it is necessary to “inject” with force. This is especially noticeable in the winter time. Then the gear oil turns almost to jelly. To facilitate efforts, motorists recommend melting this "jelly", that is, preheating it. Fortunately, this is not gasoline, so nothing will burn or explode - you can safely hold the syringe over the gas stove or burner. If there is no such syringe, and the replacement time is running out, then you can use the available methods. UAZ owners are rich in ideas, and everyone invents their own way. For example, you can use a thin tube and a plastic bottle to fill oil. The car is jacked up and oil is poured by tilting the bottle. It is important to achieve maximum tightness of the connection (meaning the point of contact of the end of the hose with the neck), otherwise the fluid will not overflow into the transmission, but onto the asphalt. The UAZ gearbox will quickly fail.

Others use a longer tube - pulling it from the transmission filler neck through the bonnet. A funnel is put on the top of the hose. This method is easier than using a plastic bottle.

Analogue of a metal syringe

Some people use a disposable medical syringe for filling.

Choose a larger volume, since 10 ml can be poured in until the evening. In the absence of an opportunity to buy a large syringe, it is better to use the previous methods.

We carry out maintenance - down with the leak

We have already said at the beginning of the article that a leak in an element such as a gearbox (including UAZ Patriot) is an unacceptable thing. But what if the transmission regularly “eats” oil? Replenishing it daily to the correct level is not the best solution. It is necessary to make repairs - for this, the place of the drip is visually determined and the sealing is changed. It can be a gasket or an oil seal. The repair must be accompanied by a dismantling box.

Why does the box "eat" butter?

There are several reasons for this. Firstly, it is the presence of road dust and dirt in the transmission oil. And as we know, UAZs are bought far from for city driving - in 70 percent of cases they are prepared for a full-fledged off-road, where they conquer fords and rivers. A UAZ, sunk in mud (this is, of course, a rarity, but even four-wheel drive does not save you from a deep swamp) easily “swallows” mud, sand and water. By the way, the presence of even 5 percent of water can simply kill the transmission. To prevent this, motorists install a cover on the UAZ gearbox. It is able to protect the transmission from such factors.

We treat noise

On UAZ cars, the gearbox often howls, including the transfer case. When the bridge is disconnected, the synchronizers begin to "grunt", strange noises appear. Even after the checkpoint bulkhead, these diseases do not disappear. By the way, it is the transmission lever that is a kind of "noise antenna" on UAZ vehicles - press it down a little with your hand, and the sounds disappear. Of course, driving and constantly pressing the lever will not work (especially since it harms the resource). Therefore, many drivers are advised to install a gearshift lever from a GAZelle. According to legend, the noise level disappears. This is one of the many tips from UAZ owners. By the way, the gearbox diagram of the UAZ and GAZelle is almost the same. Therefore, parts are interchangeable here (including the "noise antenna").

Gearbox UAZ 469 - overhaul

The cost of a new box is about 30 thousand rubles, so many make repairs with their own hands. But first you need to check what exactly is out of order. So, first of all, we look at the state of the gear shift fork.

Even if visually it is "like new", be sure to move it from side to side. If it dangles from the rods, tighten it. Next, we look at the wear of the gears of the gears. The greatest wear can be in the area of the coupling teeth. The gap between them should not exceed 1 millimeter (we use a special probe for diagnostics). If the gap is increased, the teeth will only seize halfway - hence the interruptions in work. Be sure to inspect the input shaft and synchronizers. The guide teeth must be free from bluntness and wear. Rust is also unacceptable. The synchronizer and gears are replaced entirely with new ones.

Then we take out the synchronizer sleeve and the hub. Externally, we inspect the lateral wear from the teeth of the input shaft. The edges must be sharp - with blunt teeth they will slip, so it is very difficult to engage the gear. As for the bearings, noises during their rotation, and even less backlash, are unacceptable. These elements are replaced with new ones.

If during operation the reverse gear was engaged with difficulty and crunching, check the condition of the teeth on its gear. Very often these details are "overwhelmed". The splines of the intermediate shaft must not be "bruised". Otherwise, a replacement. If they are intact, only the bearing changes.

So, we found out how the gearbox is serviced on a domestic UAZ car.

The gearbox on every car belongs to the important units of any vehicle, therefore its serviceability is an important factor. The SUV also has a checkpoint, thanks to which it is possible to move at different speeds. The gearbox, in addition to the main parts, is filled with oil, which requires periodic replacement. In this article, we will pay attention to the process of changing the oil in the gearbox at the UAZ Patriot. How the oil is changed, when it is needed and what determines this period.

The gearbox on a UAZ Patriot car is a unit with gears functioning inside. The friction of the gears causes them to heat up, and the formation of small particles is also carried out. The lubricating fluid in the gearbox helps to remove heat from the gears, and also prevents the development of problems such as destruction or jamming of the device.

The SUV is equipped with a manual transmission, in which the temperature loads are significantly lower than in an automatic transmission. In this case, you will notice that the oil change in the mechanical box does not need to be done as often as in the engine. But what is the replacement frequency? The manufacturer recommends changing the oil in the gearbox on a UAZ Patriot car after 60-70 thousand kilometers or after 3 years. Thus, we can say that such an important unit as a gearbox for a car is unpretentious and does not require prophylaxis soon after acquisition. But which manufacturer of lubricant should be preferred if each manufacturer characterizes their products only from the best side? Let's figure this out.

Choosing the type of oil for the gearbox

There are such cars in which the lubricant in the gearbox is poured at the time of production and after which the manufacturer does not recommend changing it. But these are mainly imported cars, and our SUV is designed for long and efficient operation, so it is important to choose a high-quality fluid for the checkpoint.

There are three types of oils that can be added to the shift mechanism. What are these types and what are they caused by?

Mineral oil for gearboxes. This type is mainly used in older vehicles with rear wheel drive. It is possible to fill it into the units of an SUV, but this is not recommended. The reasons are quite relevant, because mineral oil does not have self-cleaning properties, so the subsequent replacement should be done after 35 thousand km. As you can see, this significantly reduces the period of frequency of changing the oil in the gearbox.
Semi-synthetic oils are used in front-wheel drive vehicles, but mainly in budget models. These materials are equipped with additional additives that reduce the wear of the gearbox gears and extend the life of the product. But in this case, the next replacement of semisynthetics in the unit should be made after 40-50 thousand kilometers.
Synthetics. The most popular and most expensive of all the listed types is this particular type of replaceable substance. The composition of such oils includes a large number of special additives that extend the life of the gears of the mechanism, and also contribute to the self-cleaning of the product. Therefore, it is recommended to change these types of oils every 65-70 thousand kilometers, which is twice as long as mineral oils. Various types of oils are poured from the factory in UAZ Patriot, and these are mainly semi-synthetics. Although the manufacturer initially recommends making a change every 20-30 thousand kilometers, it is still better to do this closer to 20 thousand.

Replacement process

How is the oil change in the gearbox carried out on the UAZ Patriot car? Few people ask such a question, because drivers at the very last moment remember that the unit needs a fluid change.

The replacement process is not difficult and is carried out by analogy with engine oil. First you need to purchase a canister with a lubricating fluid, the volume of which must be at least 2.5 liters. This is the amount of lubricant that needs to be poured into the box. To carry out the work, the following tool will be required: two keys for "23" and "24", as well as a container for draining the mining and a syringe for pouring lubricant.

The sequence of actions is as follows.

When an oil change is needed

Choosing the type of oil for the gearbox

Read also: Installation of an electric lock on a UAZ

There are three types of oils that can be added to the shift mechanism. What are these types and what are they caused by?

Replacement process

How is the oil change in the gearbox carried out on the UAZ Patriot car? Few people ask such a question, because drivers at the very last moment remember that the unit needs a fluid change.

UAZ Patriot is the leading Russian SUV, the most popular among models of similar dimensions and capabilities. At the same time, it is easy to maintain. Replacing consumables for this car will not be a problem even for novice car owners, which will significantly save money on the services of a service center. For example, for "UAZ Patriot" you just need to study the operating instructions in detail.

Oil change intervals

There are many small parts in the Patriot gearbox that need efficient cooling, as overheating can lead to malfunctions and premature wear. According to the official recommendations of the manufacturer, the oil in the UAZ Patriot checkpoint should be changed every 60 - 80 thousand km. mileage. Depending on the operating conditions, the transmission fluid may need to be replaced earlier. Therefore, it is worth periodically assessing the condition of the lubricant for the presence of impurities.

What kind of oil to fill in the automatic transmission

Given the climatic and other operating conditions of the car on Russian roads, it is worth using only high-quality transmission fluid. There are three:

Mineral is inexpensive, but it should only be used with very high mileage. In warm climates, it shows itself well, but in cold weather it will quickly solidify due to the high degree of viscosity.
Semi-synthetic - the "golden mean" in the price / quality ratio. It can already be recommended for oil change in the UAZ Patriot manual transmission.
Synthetic - the highest quality, effectively lubricates parts even under extreme weather conditions. It costs more, but it will last longer.

Patriot owners often use 75W-90 full synthetic gear lubricants with GL4-GL3 specification, which are suitable for both mechanisms. When choosing, be sure to check whether the products have certification and conformity to GOSTs. This is very important if you want to get a really working and high-quality product that, when used, will give a positive result.

How much to fill

One of the important issues when changing the lubricant is the required volume. You can definitely find out the real volume by following the instructions:

prepare two containers of more than 5 liters;
drain all the old lubricant into one;
in the second add the same amount of new one.

In this way, the amount of required transmission oil for the UAZ Patriot is absolutely precisely determined.

Checking the level and topping up

Before filling in a new agent, you should measure the oil level in the UAZ Patriot checkpoint. This is easy to do with a dipstick. This fixture contains indications that the manufacturer recommends to use. It is advisable not to go beyond their boundaries, since a lack of volume accelerates the process of wear of transmission parts, and an excess leads to the formation of carbon deposits. It is clear that such consequences must be avoided. When changing lubricant, it is imperative to check the lubricant level. At the final stage, before installing the pallet and engine protection, check the amount of substance with a dipstick. If it is normal, then do not worry and put all the removed parts back.

Replacement process

For you will need:

keys for 23 and 24;
container for draining waste matter;
filling syringe;
new oil filter;
replaceable oil.

The UAZ Patriot process is as follows:

Outcomes

The process of replacing the transmission lubricant does not cause problems even for an inexperienced UAZ Patriot car owner. That being said, the process helps save good money when done regularly. By choosing a good fluid and changing it correctly, drivers significantly reduce the effect of friction on the transmission and postpone the overhaul period as much as possible.

They create a strong lubricating film at the contact points of the parts of these units, which can withstand heavy loads.

Gear oils are defined and differentiated by widely accepted classifications today: SAE J306 for viscosity, such as 80W, 90, 75W-85 or 80W-90, and API, which contains a comprehensive assessment of gear oils for performance, such as GL-4 or GL-5 ... In addition, in addition to the API specification, MIL ratings may sometimes be used. For example MIL-L-2105A or MIL-L-2105B.

Features of the classification of gear oils according to SAE and API.

The SAE viscosity grades, for which the number has the letter W, refer to seasonal oils for the cold season, for example, 75W or 80W. Accordingly, without W - for oils for warm summer time, for example, 90 or 140. However, since the resource of transmission oils is quite large, it is very inconvenient and economically unprofitable to use seasonal oils in daily operation, changing them in units every six months.

For these reasons, the so-called thickened or multigrade gear oils have become more widespread. They combine the properties of two grades of oil at once - summer and winter, which is reflected in their marking, which already consists of two numbers separated by the letter W, for example 75W-90 or 85W-140.

The API classification currently contains five categories - GL-1, GL-2, GL-3, GL-4 and GL-5, which show the applicability and quality level of transmission oils. For example, in the GL-5 category - the oil contains extreme pressure, antiwear and other additives, it is used for hypoid and other types of gears in gearboxes and cars.

Several types of synchronized gearboxes can be installed on UAZ Hunter cars and all models based on it: a four-speed Russian-made, five-speed ADS made in China or a five-speed DYMOS made. On the UAZ Patriot and all models based on it, only a Korean-made five-speed DYMOS gearbox is installed.