UAZ: front axle. The bridge of the car "UAZ-Patriot": tuning, repair, maintenance, adjustment

As many know, Russian roads are not distinguished by their quality, not to mention the lack of roads. To move around in such conditions. Need a car with excellent running characteristics. They have "UAZ-Patriot".

A little about the UAZ car

The Russian SUV "UAZ-Patriot" has well proven itself on the Russian off-road. And the scope of application is very wide, ranging from an agricultural vehicle and ending with military vehicles capable of performing the tasks in extreme conditions. Design "Patriot" is great for both everyday use, and for sally on impassable routes. Especially since the running characteristics allow you to get there where the cars are not even dreamed of. On this car you can easily go fishing or hunting, and if during the event the bad weather can be achieved, you can easily get out of any trouble by turning on the front drive. The quality of the parts depends on the performance of the UAZ car. The front axle is no exception. If low quality parts are used for repairs, complete failure is possible.

UAZ bridge: purpose and characteristics

The bridge is a beam between the wheels and ensures their secure fastening. It is equipped with elastic parts, with which the loads are extinguished during driving. Since "UAZ-Patriot" is designed for operation in difficult conditions, the bridge must be of increased strength. In addition, from the leading bridge depends almost all the performance of the car, because due to failure of at least one link further operation of the car is impossible.

The bridge consists of:

• Differential.
• The main pair.
• Semiaxis.
• Spring.

On off-road cars there is a big loading, therefore a part is springs, instead of springs. This is the reason for the excellent cross-country ability of the UAZ. The front axle is a rather complicated device, therefore it needs timely maintenance.

Types of bridges

To date, there are several types of car bridges, some of which are installed on the UAZ car. The front axle is a device that performs a huge number of functions. It is from him and the passability. For certain models, different types of bridges are used:

1. Managed. In turn, it is subdivided into split and continuous. In most cases, this is the front driving axle of the car. A slit bridge serves to transfer torque, resulting in increased maneuverability of the car. Unshielded is equipped with pivoting fists, which makes it possible to control the rotation of the wheels. For this type of bridge, an easy and strong beam is required, for which the forging technology is used and high quality steel is used.
2. Supportive. In the case when the car is to transport loads of increased mass, this bridge is used. A supporting device is provided in the structure, which takes a part of the load on itself. In some trim levels, the UAZ 469 front axle is equipped with a similar supporting element.
3. An inconspicuous lead. The most difficult system, because, in addition to the beam, the device includes a system of bearings, differential and semi-axles. With this system, the front wheels have the ability to spin at different speeds. At turns, the car is more stable and capable of withstanding heavy loads, while in the cabin there will be a sense of smooth running when driving on a rough road. To withstand mechanical loads, the axle shafts are made of high-quality steel, after which the hardening procedure is carried out.

Common structural failures

With the Russian impassability, the UAZ car will do its best. The front axle is a complex system, any malfunction of which will lead to the further exploitation of the car. Repair of the front axle will cost the owner a significant amount of money, so it is necessary to conduct timely diagnostics and lubricate the details of the device.

The basic malfunctions of the bridge:

• Oil and grease leakage.
• Wear of fixing devices.
• Defects of bearings, teeth, semi-axles.
• Mechanical damage to the beam.
• Wear of accessories.

All faults can occur for various reasons. If the front-wheel drive car is turned on, then riding on uneven roads hi to the damage to the transmission. Also the use of winter oil for transmission in summer or vice versa will affect the performance of the car not for the better. In tires, it is necessary to maintain a constant pressure to prevent bearing and shaft defects. The Russian off-road does not frighten the UAZ car. The front axle requires proper adjustment of the bearings.

Timely detection of the failure will quickly eliminate the breakdown, preventing more serious consequences. Among the SUVs in the markets the leading place is occupied by "UAZ-Patriot", the front axle of which needs periodic maintenance.

The main signs of breakdowns:

• Extraneous sound.
• Gradual loss of controllability of the car.
• Increase fuel consumption.
• Untimely wear of engine and transmission parts.
• The most dangerous symptom is the wedge when moving. This event requires immediate repair and adjustment of the bridge.

Timely adjustment of the bridge "UAZ-Patriot" will avoid a large number of malfunctions and keep the car in good condition.

How to dismantle and repair the bridge

To date, they often buy "UAZ-Patriot". The front axle requires constant monitoring and periodic maintenance. Rotary fists and bearings must be adjusted in a timely manner. Replacing grease is also a necessary requirement for the proper operation of the entire system. The main device on which driving performance depends is the front axle (UAZ). The price will depend on the completeness of the device. It ranges from 75,000 rubles to 200,000 rubles.

In order to remove the front axle, it is necessary to fix the car in a stationary state, for example, by placing blocks or bricks under the rear wheels. Then, disconnect all brake line hoses, and then unscrew all nuts and bolts that attach shock absorbers, gears, lining and ladders. To the next stage it is necessary to approach with all responsibility, since it is the most complex.

The stages of dismantling the bridge "UAZ-Patriot":

1. It is necessary to remove the wheels.
2. Disconnect the bipod drawbar.
3. Remove the wheel clutches and brake drums.
4. Straighten the edges of the lock washer.
5. Disconnect the inner washer and the lock ring.
6. Next, you need to start disassembling the kulaks, brake flaps and wheel hubs.
7. We unscrew the ball and traction of the steering trapezoid.
8. Dismantle the gaskets, remove the body of the rotary fists.

After the front axle is completely disassembled, all components must be wiped and a fault found. Then it needs to be eliminated. Count on off-road accounts for only UAZ. The front axle must be maintained in order to avoid expensive repairs. It should be borne in mind that the smallest crack can cause a breakdown, so it is better to replace such a part immediately, without waiting for its failure. Because the next time you have to again disassemble the entire device. The UAZ front axle is being analyzed in a similar way . Now it will not be difficult for you.

Switching on the front axle "UAZ-Patriot"

UAZ is a powerful Russian SUV. On the normal surface of the car and so will be fine, but for driving on bumps, impassable dirt and potholes it is necessary to switch on the UAZ front axle. How to do it? For this, it is necessary to check the position of the UAZ front axle coupling. To turn on, you must turn the hubs clockwise and move forward. After all the manipulations done, the vehicle's permeability will increase significantly, due to the fact that the front wheels will rotate synchronously with the rear wheels. It should be noted that the inclusion of the front axle UAZ will significantly increase fuel consumption. But the car will become more maneuverable, more stable and more manageable. In the case when the UAZ front axle is switched on for driving on flat asphalt, the rubber and transmission wear out several times faster, and the handling significantly deteriorates.

In general, there are 2 ways to turn on the hub: manual and automatic. The first method is discussed in detail above, and the second is the most convenient.

It is worth remembering that it is worthwhile to switch on and turn off after a complete stop of the car. After the performed operations it is necessary to make sure that the device is actually turned on and turned off.

Methods for determining the deactivation of the front axle:

• When driving, pay attention to the behavior of the rear wheels, they should work independently of the front.
• To pay attention, as the car behaves on turns - the car will conduct a little at the included forward drive.
• Well, the most popular and common way. It is necessary to ask an outsider to see if the drives rotate or not. If they spin, it means that the couplings are switched on, and they must be turned off.

Preventive maintenance and timely detection of defects

From time to time you need to pay attention to the running parts of the car. This will positively affect operation and reduce the likelihood of car breakdowns.

When carrying out prophylaxis it is necessary

• Check the oil level in the crankcase, top up or change if necessary. The oil is drained through a special hole from the bottom of the crankcase. But in order to drain the oil completely, it is necessary to open the filler hole by unscrewing the upper plug. If necessary, the container must be rinsed.
• Adjust the axial clearance. The presence of a gap between the transmission of the reduction gear and the bearing of the drive pinion will lead to a rapid wear of the teeth. You can determine by loosening the mounting propeller shaft. To eliminate the need to tighten the nut, applying a certain effort.
• Clean all visible parts of the bridge, including the safety valve. Clean all dirt deposits with a rough brush.
• Check the rotary knuckles. It is necessary to pay attention to the levers of the kulaks, more precisely, to its attachment. Wheel restraints must always be intact.
• Check all fastenings. If necessary, tighten the bolts and nuts using the keys of the desired diameter.

A similar device has a front axle UAZ "loaf". He also needs similar preventive measures.

Suspension tuning

Every car owner sooner or later asks about improving the performance and technical characteristics of his car. For some, external changes and modifications to the body of the car are important . But for the owners of SUVs, the main task is to improve the suspension.

Measures during tuning "UAZ-Patriot":

• Strengthening of bridges and reduction of gear ratio.
• To increase the travel of the suspension, it is recommended to replace the rear suspension with a spring suspension. But it is worth considering that the car will lose a little in maneuverability.
• Increasing the ride height will greatly increase the passability of the machine. The elevator will help to overcome even the deepest ford.
• Replacement of tires for tires with a wider profile will positively affect the patency of the car in difficult terrain.

Let's consider some variants of tuning of a suspension bracket in more details.

The easiest and inexpensive is to increase the backlash of the suspension by 2 cm. It is necessary to place rubber inserts under the front springs and replace the earring with springs. In this case, the installation of the Panar thrust is not required. Since the ground clearance is increased, it is possible to put more serious rubber.

The next option is to lift the body itself above the frame. The ground clearance will increase by 5 cm. The method consists in installing the spacers in the places where the frame and body are fastened. It is advisable to use aluminum inserts. In parallel, it is necessary to transfer all the brackets for fastening the frame and body, and also lengthen the stops so that the body does not go. The bumper also needs to be modified: on the front we put more aluminum spacers, and on the back we move the brackets. As a result, the ground clearance is increased, and you can put rubber 275/75 R16. Tuning of the suspension "UAZ-Patriot" must be done with all the necessary tools.

Another option will significantly increase the clearance, which will positively affect the passability of the car. But the method is rather problematic and complex. In this case, it will be necessary to install the Panar thrust and replace the shock absorber. On the front axle we put the spacer to 10 cm on the glass of the bump. On the machine drill the holes in order to change the angle of the kingpin. The standard slope of 3 degrees is changed by nine. This will not lose the stability of the car on the road. In addition, it is possible to put bipods on the pull of dampers, they will perfectly suit from "Mercedes Gelenvagen". It is also necessary to install a longer rack on the bridge stabilizer. This method will be quite expensive, but the characteristics and throughput of the machine will increase significantly.

Adjusting the bridge

Typically, all adjustment activities are carried out at the factory, and when using the vehicle, these actions are not required. When bridging the bridge or bearing failure, adjustment is sometimes performed.

Adjustment without bearing replacement:

• Unscrew the axle shafts, remove the crankcase cover or reducer (depending on the type of axle).
• In the differential, namely in bearings, establish a clearance of 0.15 mm with the help of adjusting nuts.
• Install the lateral clearance 0.20 mm. Turning the gear, we make measurements in at least 6 points.
• If the side clearance is to be increased, turn the adjusting nut and turn the opposite nut by the same number of revolutions. To reduce the gap, we perform all the same operations to the exact opposite.
• We compress the bearing in the direction of the axis to adjust the preload. The compression level depends on the mileage of the car.
• We build the bridge. The UAZ front axle 469 is regulated in a similar way.

Adjustment with bearing replacement

• Unscrew the axle shafts, remove the crankcase cover or reducer (depending on the type of axle)
• Remove the cover from the bearings.
• Using a dynamometer, measure the friction torque of the gear.
• Remove the rings from the differential box and put on new ones.
• Install new bearings.
• Put on and fix all previously removed covers. It is desirable to make an effort to fix it more firmly. Bolts must be lubricated with a special sealant.
• In order to increase the moment of resistance to rotation, it is necessary to tighten the adjusting nuts alternately until the optimal resistance value is 200-250 N.
• Install all previously removed parts, including the semi-axle.
• Tighten all fasteners securely.

Results

As can be seen from the article, the most Russian SUV is, of course, UAZ. The front axle is one of the most basic parts. The car will not be able to function properly if there is a malfunction of the running gear. "UAZ-Patriot" - a car for roads with poor conditions of patency. If he does not cope with the tasks as an SUV, there is no point in spending additional money. As any car on a smooth asphalt will pass perfectly. In order for UAZ to meet all the requirements, it is necessary to keep the running parts in good condition. Proactively and proactively. It is also necessary to make modifications to the bridges and increase the ride height without harming the car. If you have certain skills of the mechanic and the information given in this article, it is possible to make all the manipulations yourself. Repair of the front axle UAZ will cost a considerable amount, so it is better to prevent malfunctions.