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

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

Any SUV with all-wheel drive must be equipped with a transfer case. The UAZ Patriot is no exception. The razdatka in this car until 2014 is the most ordinary mechanical, controlled by a lever. Models launched after 2014 have a new transfer case. It is manufactured in Korea by Hyndai-Daymos. Let's look at the design and construction of a domestic mechanical box, and then a new Korean one.

Assignment of the transfer case

This assembly is needed to share 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 through difficult areas due to low gear.

This box is two-speed and is able to increase the number of gearbox gears intwice. This allows you to more conveniently operate the SUV in the most difficult conditions.

Where is it?

On the UAZ Patriot, the transfer case is located directly next to the gearbox. The mechanism is connected to the front and rear axles using cardan shafts. The structure is encased in cast iron. Gears, shafts, and a lever for controlling the transmission are installed inside this housing.

Device

So, inside the transfer case there is a drive shaft, drive shafts for the rear and front axles, a gear, and a reduction gear. The transmission receives its torque directly from the gearbox input shaft. The transfer case is attached to the rear of the gearbox using special connecting elements. This assembly is centered on the outer part of the bearing - it is two-row and is located at the gearbox, on the secondary shaft. On the rear wall of the crankcase of the transfer case there are elements of the parking brake.

There are two shafts inside the unit. This is the leading and intermediate. They are fixed by bearings. The design also includes drive shafts for the front and rear axles. They are equipped with spur gears, thanks to which the engagement is carried out.

From the gearbox, the drive shaft with splines at the end enters the transfer case. A drive element for the rear axle is installed in the same plane with this shaft. It is also fixed with bearings. Between the rear axle shaft bearings is the speedometer gear.

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

On the UAZ Patriot, the transfer case is also equipped with a lever through which the driver can control the operation of the transmission. The control mechanism consists of two rods and two forks. These elements are at the top of the node. Using the lever, you can turn on or off the rear and front axles, or engage both axles.

Also, the mechanism includes seals, seals, fittings, flanges, oil drain plug. The device is undemanding to maintenance. However, periodically it is required to carry out various preventive and repair work. Most often, new oil is poured into the UAZ Patriot transfer case, oil seals or worn gears are replaced.

New dispenser

As already noted, the Patriot models after the 2014 model year were equipped with new boxes from the Korean brand Hyundai-Dymos. But in fact, the mechanism is produced in China under license. This handout has a good pedigree. It is enough that this mechanism was developed back in the 80s by Japanese engineers. Almost the same handouts were installed on Kia Sorento and Hyundai Terracan. This suggests that the design is quite successful. And since it is suitable for the Japanese and Koreans, then it will be just right for the Patriot, say the reviews of the owners.

Mechanics is simple and clear. And what can be said aboutelectrical design? Transfer boxes of the past generation were purely mechanical. Four-wheel drive was connected due to the strength of the hands of the driver, who set the selector to the desired position. Distribution box "UAZ Patriot" from "Daimos" electric. To switch to the desired mode, just turn the puck or rotary controller. Everything else will be done by an electric motor that controls the rods and forks inside the mechanism.

Reaction of owners

The absence of the usual lever in the cabin causes ambivalent feelings among the owners. This detail is available even in serious imported SUVs. But on the other hand, the round selector looks more modern and elegant. The reader can see it in the photo below.

This is the normal approach of a manufacturer that would like to catch up with global automakers.

Features of Korean Daimos

Experienced off-road owners with the installation of a new transfer case will immediately notice a lower noise level. Due to the use of a multi-row Morse chain in the design, the cabin has become much quieter. The reader can see the chain itself in the photo below.

On the UAZ Patriot car, the Korean razdatka does not reduce the clearance - under it to the ground as much as 32 centimeters, which is even more than above the main gear. It will not become that "bottleneck" that limits the possibilities of cross-country ability.

Numerous test drives show that this mechanism would not interfere with the additional protection of the dispenser. "UAZ Patriot"There is no such option by default. The electric motor protrudes. And when driving through ravines, swamps and other obstacles, it can be easily damaged.

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

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

Advantages and disadvantages of electric PK

The benefits of the new electrical design include a different, more efficient gear ratio, reduced noise and vibration when driving. Also, the advantages include simplicity and ease of control modes. The disadvantages include the increased price and a lot of questions regarding the maintenance and repair of this mechanism at our service stations.

Mechanical transfer case: tuning

On UAZ "Patriot" cars, the transfer box can be modified using tuning. So, with the replacement of gears, you can adjust the torque in low and direct gears. The design is being finalized to eliminate noise.

Modifications are possible that solve the problem of self-deactivation of a lower gear. In addition, the design of the box is not highly reliable and sometimes it is necessary to strengthen its attachment to the body. You can also modify the box so that it allows you to completely disable the front axle.

Typical malfunctions

Among the possible breakdowns are the appearance of noise, failure of gears, leakage through seals, destruction of bearings. Long trips with incorrectly inflated tires lead to these problems. Also, the front axle, switched on for too long, often leads to malfunctions. It should only be connected when necessary. If the transfer case (transfer case) is poorly screwed to the body on the UAZ Patriot, this can cause noise.

Poor quality bearings - this is one of the problems of this mechanism. Due to low quality, these parts often fail. Often, breakdowns are associated with low or no oil inside.

On a UAZ Patriot car, a new model transfer case repair may be needed for the same reasons. The owners report a problem with the chain and bearings. However, despite these figures, sales of such vehicles indicate good demand for electric transfer cases. These machines sell much better than the basic versions equipped with a domestic mechanical transfer case.

Conclusion

So wewe found out how the transfer transmission is arranged on the UAZ Patriot car and what features it has. As you can see, this mechanism significantly increases the cross-country ability of an SUV. After all, it is the razdatka that includes a reduced range of gears and blocks the center differential.