"UAZ Patriot": distribution. Features, device and reviews

Any SUV with four-wheel drive must be equipped with a transfer case. "UAZ Patriot" is not an exception. Distributing in this car until 2014 is the most ordinary mechanical, controlled by the lever. In models released to the market after 2014, a new distributing transmission is installed. It is manufactured in Korea by Hyndai-Daymos. Let's consider the design and construction of a mechanical domestic box, and then a new Korean one.

Purpose of the transfer gear

This node is necessary to separate the torque for the two axles of an off-road vehicle. But that's not all. This unit allows you to increase the torque in the process of difficult areas due to reduced transmission. This box is two-stage and can increase the number of gearbox transmissions by half. This makes it more convenient to operate an SUV in the most difficult conditions.

Where is?

On the "UAZ Patriot" the distribution is located directly near the gearbox. With the front and rear axle the mechanism is connected by means of cardan shafts. The design is enclosed in a casing made of cast iron. Inside this body are mounted gears, shafts, and also a lever for controlling the transmission.

Device

So, inside the transfer box there is a drive shaft, drive shafts for the rear and front axle, gear transmission, as well as lowering. The transmission torque is obtained directly from the drive shaft of the gearbox. The transfer box is attached to the rear of the gearbox using special connecting elements. This knot is centered on the outside of the bearing - it is double-row and is located on the gearbox, on the secondary shaft. On the back wall of the crankcase are the parking brake elements.

There are two shafts inside the unit. It is the leading and the intermediate. They are fixed by means of bearings. The design also includes drive shafts for the front and rear axles. They are equipped with spur gears, due to which the gears are engaged. From the gearbox in the transfer case includes a drive shaft with splines on the end. In one plane with this shaft, a drive element for the rear axle is installed. It is also fixed by means of bearings. Between the bearings of the shaft of the rear axle is the gear of the speedometer.

The rotation of the intermediate mechanism is provided by two bearings. One of them is a ball type, the second is a roller type. The drive shaft of the front axle together with the gear is located at the bottom of the box. It rotates thanks to two ball bearings.

On "UAZ Patriot" the distribution is also equipped with a lever, through which the driver can control the operation of the transmission. The control mechanism is two rod and two forks. These elements are at the top of the node. With the lever, you can turn on or off the rear and front axles or use both bridges.

The mechanism also includes oil seals, gaskets, fittings, flanges, a drain plug. The device is undemanding for maintenance. However, periodically it is required to carry out various preventive and repair work. Most often, new oil is poured into the distributor of UAZ Patriot, replacing oil seals or worn gears.

New distribution

As already noted, the Patriot models were equipped with new boxes from the Korean Hyundai-Dymos brand after the 2014 model year. But in fact, the mechanism is made in China under license. This distribution has a good pedigree. It is enough that this mechanism was developed in the 80's by Japanese engineers. Almost the same distributions were installed on Kia Sorento and Hyundai Terracan. This indicates that the design is quite successful. And since it is suitable for Japanese and Koreans, it will be just right for "Patriot", say the owners' reviews. Mechanics - it's simple and understandable. And what about the electrical design? The dispensers of the past generation were purely mechanical. The all-wheel drive was connected by the force of the driver's hands, which set the selector to the desired position. Distributing "UAZ Patriot" from "Daimos" electric. To switch to the desired mode, it is enough to turn the washer or rotary controller. Everything else will be done by an electric motor that controls the rods and plugs inside the mechanism.

Owners reaction

The lack of the usual lever in the cabin of the owners causes dual feelings. This detail is available even in serious imported SUVs. But on the other hand, the round selector looks more modern and elegant. His reader can see in the photo below. This is the normal approach of the manufacturer, who would like to catch up with the world's automakers.

Features of the Korean "Daimosa"

Experienced owners of SUVs with the installation of a new dispenser will immediately notice a lower noise level. Due to the use of the multi-row Morse chain in the interior, it has become much quieter. The chain reader can be seen in the photo below. On the car "UAZ Patriot" Korean distribution does not reduce the clearance - under it to the ground as much as 32 centimeters, which is even more than over the main transmission. It will not become that "bottleneck", which limits the possibilities of patency.

Numerous test drives show that this mechanism would not be hampered by additional protection of the dispenser. "UAZ Patriot" does not have such an option. The electric motor projects outwards. And when driving on ravines, swamps and other obstacles it can easily be damaged.

As for the technical characteristics, the overall dimensions of the mechanism have increased, the torque has increased due to other gear ratios. This was the reason for the need to replace the cardan shafts. So, the front was strengthened, and the rear - shortened. Also removed the intermediate support. This is a big plus in favor of the Korean-Chinese mechanism. The design is more reliable, and the vibrations of the cardan are not strong.

The body of the mechanism is made of aluminum. And inside it are not the usual gears, but a chain. Due to the use of a different design, the gear ratios of the lowered series increased by 31 percent. Now the gear ratio is 2.56. The car can confidently move over rough terrain due to increased torque. On mechanical versions this was achieved with the help of tuning.

Advantages and disadvantages of the RK

The advantages of the new electrical design include another, more efficient gear ratio, reduced noise and vibration when driving. Also, the advantages include simplicity and convenience of control modes. The disadvantages include the increased price and a lot of issues related to the maintenance and repair of this mechanism in our service stations.

Mechanical Transfer Case: Tuning

On vehicles UAZ "Patriot" the distribution can be modified with the help of tuning. So, with the replacement of gears, you can adjust the torque on a reduced and direct transmission. The design is finalized to eliminate noise. Modifications are possible that solve the problem of self-deenergizing of a reduced gear. In addition, the design of the box is not very reliable and sometimes it is necessary to strengthen its attachment to the body. You can also remake the box in such a way that it allows you to completely disconnect the front axle.

Typical malfunctions

Among the possible failures are the appearance of noise, failure of gears, leakage through oil seals, destruction of bearings. These problems lead to long trips with incorrectly inflated wheels. Also to faults often leads the front axle, turned on too long. Connect it only if necessary. If on the "UAZ Patriot" the distribution (distribution box) is badly screwed to the body, it can cause noise.

Low quality of bearings is one of the problems of this mechanism. Due to poor quality, these parts often fail. Often breakages are associated with a low level of oil or its absence inside. On the car "UAZ Patriot" repair of the distribution of a new sample may be needed for the same reasons. Owners report a problem with the chain and bearings. However, despite these figures, sales of such cars indicate good demand for power-driven transfer boxes. These machines are sold much better than the basic versions, equipped with a mechanical domestic distribution.

Conclusion

So, we found out how the distribution transmission works on the UAZ Patriot car and what features it has. As you can see, this mechanism significantly increases the cross-country ability of an off-road vehicle. After all, the distribution includes a lowered range of gears and blocks the interaxle differential.