EUR and power steering Priora: list of possible faults and repair methods. Life hack: power steering of the Lada Priora, replacing the fluid, what it consists of. What is poured into the power steering reservoir of the Priora

Driving a car used to be quite a difficult task. The power steering, also known as power steering, of the Lada Priora makes the steering wheel of the car light. The electric booster is even lighter, but not more informative. Priora is equipped with and power steering. The amplifier operates using liquid, so in comparison with an electric amplifier, you need to monitor the level. On Priora, the assembled part will cost more than 7 thousand. The price is for the kit - it consists of 11 parts. Constantly being on the road tires you not only with emotional fatigue, but also with the incessant movement of the steering wheel, gear lever and pressing the pedals. To reduce the load on muscles, various systems are built into cars. Some of them make the pedals “lighter”, while others make it easier to turn the steering wheel.

The power steering for the Priora car has become a real salvation; the steering wheel has become lighter and more comfortable to use: to make a turn, you don’t need to use too much effort, tiring yourself. The power steering immediately picks up the force that the driver applies to the steering wheel and begins its work.

However, the mechanism requires attention: at certain moments it is necessary not to forget about replacing the Priora power steering fluid. Also, after a couple of years the hose cracks, so replacing the power steering hose in a Priora car is a matter of 3-6 years.

Standard power steering (hydraulic booster) - article number and price

The standard power steering for the Priora received catalog number 21230340701200, the cost is from 7,500 rubles. Before ordering and purchasing, you should check the availability of fasteners. But the system itself is sold for spare parts:

• Long oil tank strap - 21100341010500 - about 500 rubles.
• Oil tank bracket - 21100341010000 - about 150 rubles.
• Power steering tank - 21230341001000 - about 900 rubles.
• Supply pipe - 21100340812500 - about 1,000 rubles.
• Power steering pump - 21100340700900 - about 6,000 rubles.
• Pillow – 21100340804000 – about 400 rubles.
• Low pressure pipe – 21100340804000 – about 400 rub.
• High pressure hose with tube – 2110034801810 – about 1,900 RUR.
• High pressure pipe – 21100340808001 – about 900 rub.
• Low pressure hose with tube – 21100340802600 – about 1,800 RUR.
• Front high pressure hose – 21100340810010 – about 1600 rub.

What does the power steering system consist of and how does it work?

The Priora's power steering works in the steering system. Its main part is the pump. The system fluid circulates in a special tank, pipes, and hoses that can withstand high pressure.

The operation of the hydraulic booster depends on the quality and “purity” of the corresponding working fluid in the system. When the driver turns the steering wheel, the pump increases the pressure of the working fluid, and it pushes the piston, increasing the force on the steering rack. In this case, the force that develops thanks to the pump is proportional to the resistance force that acts on the wheels - be it off-road or on a free track.

It turns out that at high speed the Priora’s hydraulic booster practically does not work - changing lanes or turning requires the least effort. A special torsion bar device, which is part of the steering mechanism, helps to properly distribute the resulting forces. Having received a signal in time that the created pressure is sufficient, the pump stops its operation, and sufficient auxiliary force is created to turn the steering wheel. It turns out that while driving, the driver constantly needs to act on the steering wheel with the same force, because the power steering always minimizes the impact of the opposing force.

Life hack: power steering (power steering) of the Lada Priora, replacing the fluid, what it consists of

Driving a car used to be quite a difficult task.
The power steering, also known as power steering, of the Lada Priora makes the steering wheel of the car light. The electric booster is even lighter, but not more informative. Priora has configurations with EUR and power steering. The amplifier operates using liquid, so in comparison with an electric amplifier, you need to monitor the level. On Priora, the assembled part will cost more than 7 thousand. The price is for the kit - it consists of 11 parts. Constantly being on the road tires you not only with emotional fatigue, but also with the incessant movement of the steering wheel, gear lever and pressing the pedals. To reduce the load on muscles, various systems are built into cars. Some of them make the pedals “lighter”, while others make it easier to turn the steering wheel. The power steering for the Priora car has become a real salvation; the steering wheel has become lighter and more comfortable to use: to make a turn, you don’t need to use too much effort, tiring yourself. The power steering immediately picks up the force that the driver applies to the steering wheel and begins its work.

However, the mechanism requires attention: at certain moments it is necessary not to forget about replacing the Priora power steering fluid. Also, after a couple of years the hose cracks, so replacing the power steering hose in a Priora car is a matter of 3-6 years.

Main faults of the hydraulic booster on a Lada Priora car

When operating a Priora with power steering, the following problems may occur:

• When turning the steering wheel, a feedback is felt, similar to a push in the opposite direction (replacing or tightening the drive belt will help);
• It is difficult to turn the steering wheel (replacing or tightening the belt will help; adding fluid to the tank to the normal level, replacing or cleaning the filter; replacing the pump; removing the air lock or adjusting the idle speed);
• The steering is too “smooth” (adding fluid, removing the air lock and checking the steering, changing the tires will help);
• Extraneous noise during operation of the power steering (adding fluid, removing air lock or mechanical damage, checking the pump and replacing it will help);
• The steering wheel vibrates with weak shocks (removing the air lock in the system, balancing the wheels or changing the tires will help).

Repair: removal and installation of power steering Lada Priora

Replacement of Gur Priora and its repair must begin with correct diagnosis. It is also worth inspecting the reservoir of pipes and hoses in order to notice any damage in time. To remove the power steering you will need:

• stopper for retaining rings;
• key 12, head 14, 24;
• new bearing;
• syringe and container for draining liquid;
• fine-grained sandpaper and clean rags.

Working with power steering requires care - the system must remain sealed. The low pressure hose (2110 3408026 – article number) is often damaged. Therefore, the reason for the intrusion into the power steering system is the replacement of the Priora power steering hose. Repair work is carried out as follows:

1. Park the car on level ground, tighten the handbrake, remove the negative from the battery.
2. Find the hole in the pulley and unscrew the mounting bolt that secures the pump;
3. Use a syringe to pump out the oil from the system. At the same time, rotate the steering wheel in different directions so that the liquid comes out of the hoses;
4. Loosen the clamp attached to the reservoir hose. Take out the hose;
5. Remove the bolt that secures the high pressure hose;
6. Remove the bolt and replace it with a metal rod of the same diameter.
7. Take out the pump, clean it of dirt, you can clean all the systems connected to it of dirt.
8. If repair or replacement of the system is required, after repair, reassemble everything in the reverse order.

Replacing the power steering fluid of a Lada Priora car step by step instructions

To change the power steering fluid of the Priora, it is highly recommended to call a friend and partner. You will have to perform several operations simultaneously. For convenience, it is recommended to place the car in a pit or raise the front of the car on two supports using a jack. Prepare a container to drain the used fluid. Carry out work on replacing the Priora power steering fluid in the following order:

1. Secure the car.
2. Remove the power steering reservoir cap. Place the syringe into the tank and gradually pump out the liquid accumulated in it. For convenience, before putting the syringe into the tank, it is recommended to put a small hose on it. It is also recommended to cover with a cloth the entire engine compartment over which you will carry the syringe with oil to the container, so as not to pour in excess drops.
3. Ask your partner to get into the car and turn the steering wheel. At this time, suck out the liquid that flows into the tank from the hoses.
4. But that is not all. To collect the remaining oil, loosen the clamp of the high pressure hose, grab the hose, and lower it into the drain container.
5. Ask your partner to turn the steering wheel again.
6. Reinstall the hose and tighten the clamp tightly.
7. You only need to fill in new fluid. First, fill it almost to the top, and then ask a friend to turn the steering wheel. The fluid level will drop, but this is normal. Add a little more, leaving a few centimeters up to the throat.
8. Have someone start the engine for 10-20 seconds and then turn it off. After this, you need to turn the steering wheel again. During this time, the remaining air will leave the system.
9. Add oil to the normal level. Screw on the tank cap and close the hood.
10. Start the engine. Check if the power steering works as well as it did before.

Good day everyone! This article will tell you how to independently change the power steering oil of a Lada Priora.

. The procedure is simple and under normal conditions will take no more than one hour.

So, first, let's decide what tools and materials we will need. First, we need the power steering fluid itself. 1 liter will be enough for replacement. Recommended liquid:

Pentosin CHF 11S

.
Article number for searching in online stores: 4 008849 503016
In addition, other fluids can be used in Priora power steering. For example:

FEBI 46161 Vaico V60-0018 SWAG 99 90 6162

You can also use any liquid with the Dexron II or III standard. These are automatic transmission fluids, but they can also be used in power steering Lada Priora.

We will also need:

Jack - 2 pcs. — Plastic bottle 0.5l, 1.5l — 1 pc. — Syringe and thin hose — 1 pc. - Screwdriver.

Mixing system

Red and yellow oils can be mixed with each other only if they belong to the same group - synthetic or mineral. But mixing greens is only allowed with their own kind.

If you add green oil to yellow oil, foam may form. Then it is necessary to flush the system before using oil with a different color.

No foreign phenomena are observed when yellow power steering oils and mineral Dexrons are mixed. In the new composition, such additives continue to function normally.

You can add, for example, conditionally miscible oils. Only from different manufacturers, and the mixing itself occurs in different ways. The service life of the hydraulic booster does not change, as does the main operating mode.

There are also oils that can only be mixed with each other. They can be used instead of other compounds if you first clean the entire system.

We repair the Lada Priora car ourselves:

Power steering (power steering)

installed in almost every modern car. The purpose of the power steering is to facilitate steering turns by pumping oil under high pressure. Heavy vehicles are very dependent on power steering; without it, it would be impossible to turn the huge wheels while standing still.

Like any fluid used in a car, power steering oil requires replacement. In this article I will talk about how to change the power steering oil with your own hands on a Lada Priora. According to generally accepted rules, the power steering oil is changed at least once every four to five years or every 80 thousand. km. mileage By the way, I already wrote about that once, but then we were talking about the VAZ 2115, but there are no special differences, the principle is the same.

Instructions for changing Priora power steering oil

1. The first step is to raise the front of the car. This is necessary in order to make it easier to turn the steering wheel. Two regular jacks will do for this.

2. Using a regular medical syringe, pump out the fluid from the power steering reservoir into any container.

3. When the liquid is drained, remove the return hose from the tank and insert it into a plastic bottle. At this stage of changing the Priora power steering oil, it is better to get an assistant who will rotate the steering wheel all the way in both directions. When the steering wheel rotates, fluid is squeezed out of the system. As practice shows, to completely pump out fluid from the system, 8-10 full turns of the steering wheel all the way are sufficient.

4. Reinstall the return hose and fill the reservoir with new power steering fluid. After the tank is full, the assistant begins to turn the steering wheel again.

At this point, the power steering fluid will begin to gradually drain through the system. When the level decreases, it is necessary to gradually add new oil to the tank. The work is carried out until the liquid in the tank stops leaving. Then we set the required level in the tank by adding or pumping out oil. We wrap the cover and lower the car from the jacks.

That's all! Changing the power steering oil of Priora

this is complete. Do you agree that everything is not so complicated? And such a simple procedure will extend the life of the power steering pump significantly. Don’t skimp on consumables, see you next time!

LADA Priora car

At the service station there was an extraneous noise when the steering wheel moved.
During diagnostics, a humming sound from the power steering pump was detected. Apparently its work has come to an end, or the power steering
has been changed very rarely (the recommended frequency
is 50-60 thousand kilometers
).
You can try to simply change the fluid to the original one or try to temporarily restore the pump, but it is better to immediately replace the power steering
on the Priora and not waste time. In addition, it is cheaper than buying fluid and a repair kit twice.

Operating procedure

Before starting work, you need to prepare a container where the oil will drain. Castrol is no exception.

1. Jack up the front wheels. Two tools should be enough for this. The procedure will be especially useful when you have to drain the old composition.
2. A bulb or syringe will help rid the structure of old liquid. The oil tank becomes one of the most important parts.
3. It is necessary to cover the belts with something. This will protect them from the oil, otherwise it will be difficult to get rid of the marks later.
4. You need to call an assistant so that he can twist the steering wheel as much as possible, either to the right or to the left. Oil will appear in the tank again, which must be pumped out immediately.
5. The return hose is turned off. It doesn't matter if you use Hadot oil, Eneos oil or something else.
6. The hose is lowered into the bottle, after which the old excess liquid is drained again.
7. You can connect the hose back when everything is completely drained.
8. A new composition is poured in until the Lada Priora part is completely filled. The frequency of replacement has already been described previously.
9. Again you need to ask someone to turn the steering wheel. Oil is added to the system as it drains.
10. The specification says that you need to start the engine for 10-15 seconds after the work has been completed. The liquid will begin to decrease again. And again topping up is required.
11. It remains to make sure that when turning the steering wheel no air bubbles appear in the tank. Power steering always requires such checks.
12. If necessary, add oil to the appropriate level.

After all the steps have been completed, you need to start the engine and turn the steering wheel to the side. Factory oil should not cause any problems. The presence of hum is also unacceptable. The rotation should be very smooth, without any problems.

What kind of oil should I put in the Priora power steering?

What kind of oil to fill in power steering

It is not possible to fill the power steering with any oil. The difference between PSF and ATF is huge. The requirements for it are even greater than for the engine. It must be exclusively mineral water or synthetic, as well as a certain viscosity and properties

From the factory, light green Pentosin CHF 11S

, the cost of which is more than 1000 rubles per liter.
Original article 00001-7504780-00-0
(price 1200 RUR).
The manufacturer recommends using only original fluid for power steering
, so the manual makes a note that using a fluid other than
Pentosin Hydraulik Fluid
CHF 11S-TL VW52137 may result in...

We chose the synthetic gear oil “DEXRON III AUTOMATIC PLUS” from Mannol. Article 1 l

bottles of power steering fluid - AP10107.
The average market value is 390 rubles. It can also be liquid FEBI 6161
(price 500 rubles)

How much oil is in power steering Lada Priora

For a Priora with power steering, the expansion tank will need ~0.7 liters

liquids. When the system is completely pumped and flushed, the entire liter bottle can be used.

List of required tools

• Lift;
• 13 mm
  hex head ;
• The ratchet is large;
• Open-end wrench for 17, 22 and 27 mm
  ;
• Crosshead screwdriver;
• Sprocket T25
  .

Interchangeability and classification of oils

Typically, oils are divided into several types depending on color. How often to change the oil has already been described. The classification by color is not entirely correct. And don’t think that you can mix different brands of oils, even if they have exactly the same color. The composition and viscosity can always be different.

Power steering oils vary and have different features depending on the color.

There are some features associated with the color of the oil that are worth considering in more detail.

• Green color. This family is mainly used in VAG, Citroen, and Peugeot cars. The main thing is to never mix mineral water with synthetics if they have this color. Automatic transmission oil is never suitable.
• Mercedes cars use a yellow grade of oil.
• Dexrons are red. Only for automatic transmissions.

Synthetic oil can be added to power steering, but not in every case. To get the desired result, you need to understand whether the rubber parts have a special composition. But there are quite a few such options available.

How to change the Priora power steering pump with your own hands (removal and replacement)?

1. Unscrew the bolt securing the side protection - T25
   ;
2. Move the guard to the side;
3. Loosen the drive belt roller nut using a 17 mm
   ;
4. Raise the car;
5. Remove the belt from the pulley;
6. Remove the pulley - 13 mm
   ;
7. Unscrew the pump fastenings - 13 mm
   ;
8. Remove the clamp of the incoming oil pipe - a Phillips screwdriver;
9. Pull out the pump;
10. Remove the oil supply pipe fitting - a 22 and 27 mm
    ;
11. Remove the power steering
    ;
12. Compare with new pump;
13. Install a new pump;
14. Lower the car;
15. Open the power steering reservoir cap;
16. Fill in 0.5
    power steering fluid;
17. Pump liquid through the system;
18. Top up until full ~ 0.2 liters
    ;
19. Pump until liquid stops coming out.

Torque:

• Power steering pump mounting bolt - 30-40 Nm
  ;
• Power steering pulley bolts - 30-40 Nm
  ;
• Fitting nut - 60-70 Nm
  .

Unscrew using a T25

side protection bolt. We take her aside.

Find the drive belt tension roller nut. 17 mm open-end wrench

.

To gain access to the drive belt, lift the car.

Remove the drive belt from the power steering pulley.

The next step is to remove the power steering pulley. Unscrew 3

pulley fastening nuts
with a 13 mm
.

Remove the power steering pulley from its seat. The three power steering mounting bolts were opened. We unscrew them with a 13 mm

.

There are three more bolts on the back of the power steering. We dismantle the fastenings.

Using a Phillips screwdriver, unscrew the clamp securing the inlet pipe.

Place a container or oil receiver under the power steering pump and drain the oil. In order for the power steering fluid to come out as much as possible, you need to manually turn the wheel left and right.

Hydraulic and electric power steering are designed to ease the effort the driver makes when turning the steering wheel. The EUR is a more advanced mechanism compared to the power steering, since it uses an electric drive. The system does not contain oil or other hydraulic components, which increases its reliability. Typically, AvtoVAZ engineers install electric steering systems on passenger cars, and less often - power steering. Both types of power steering are found on the Lada Priora.

Steering diagram

The design and principle of operation of the Priora steering mechanism

On front-wheel drive vehicles, due to their design features, it is impossible to install a classic steering mechanism. The first thing engineers encounter is lack of space. A standard mechanism cannot be installed, even if a transverse engine is used instead of an in-line engine. For this reason, the classics, which are not distinguished by modest dimensions, have been replaced by a compact steering rack, which transmits the force when turning the steering wheel to the front wheels.

To save as much space as possible, on Priora and many other cars the rack is rigidly fixed to the front panel of the engine compartment - between the engine and the passenger compartment. It connects to the steering column, which extends into the cabin and ends with the steering wheel. The steering rack is a toothed metal rod. Its teeth engage with the steering wheel drive in the form of a shaft. They are located relative to each other at right angles. This is an improved worm drive.

The driver rotates the steering wheel along with a shaft, the teeth of which move the steering rack inside the casing, engaging with a toothed rod. There are holes in the rack casing through which the steering ends (rods) are connected. In the center of the rack itself there are holes for attaching these tips, which are attached to the steering knuckles of the front wheel strut using rods and special levers.

Installation of EUR

Required Tools

Let's say you purchased an EUR kit - it could be from a VAZ 2110 or from another model, for example, from a Priora. Prepare the following tools:

• Drill together with a metal drill.
• Set of screwdrivers, grinder.
• Long ruler.

All is ready? Let's move on to installation.

Step-by-step instruction

1. You need to remove the standard terminal from the block and place it in the block on the harness. We find the standard drive, which is attached to the block. A free terminal must be installed in its place. Now the wire can be placed between the fasteners.

Adjustment

After assembly, you will need to straighten the steering wheel if it is installed crooked. Separately install the sensor that came with the EUR. If the column casing is cracked, it is better to immediately replace it with a good one. There may be gaps between the front panel and the casing - they must be removed.

Design and operating features of power steering and power steering

To make steering easier to turn and increase comfort, either hydraulic or electric power steering can be used. Both amplifiers have both pros and cons.

Structurally, power steering is a system of high and low pressure hoses containing oil driven by a pump. Power steering fluid must be poured into the reservoir near the pump. It only works when the engine is running. The driver turns the steering wheel, and at this time the fluid flows through the distributor under pressure created by the pump to the steering mechanism. It enters the working cylinder, puts pressure on the piston, which begins to move, and facilitates the rotation of the steering wheel. When moving in a straight line, the liquid flows back into the system reservoir.

Power steering diagram

Advantages and disadvantages of power steering

In the case of a hydraulic booster, the main disadvantage is the bulkiness of the entire system. But it is cheaper to produce and maintain, and this affects the price of the car. At the moment, power steering is found mainly on budget class cars, which include Priora. An amplifier of this type is also installed on expensive, powerful SUVs. This is explained by the fact that the power steering is capable of transmitting greater torque transmission power to the steering. In this regard, it outperforms an electric booster, but there are still more disadvantages:

1. In a car equipped with a hydraulic booster, it is not recommended to hold the steering wheel in the extreme right or left position for more than 5 seconds. Otherwise, the oil in the power steering on the Priora begins to heat up, which can lead to system failure.
2. The mechanism requires constant monitoring of the oil level, inspection and replacement of drives, hoses, and pump.
3. The pump depends on the operation of the engine, which means it takes a certain percentage of power from the power plant. If the power steering does not work when driving in a straight line, this percentage of power is wasted.
4. Such a system does not imply setting operating modes depending on the speed of movement or the angle of rotation of the steering wheel.
5. At low speeds, the steering mechanism provides good sensitivity, but at high speeds it becomes less pronounced.

Engineers compensate for the last drawback by using a steering rack with a variable gear ratio. Power steering has already become an outdated system; designers are no longer involved in improving it.

Electric amplifier design

The design of the EUR is simpler than that of the power steering. It consists of an ECU, a torque sensor, a steering angle sensor and an electric motor. There are no hoses or fluids here. The electric motor is mounted directly on the steering rack itself, and torque is transmitted to it via a torsion shaft built into the steering mechanism system.

In the case of power steering, the force is facilitated by liquid, and in the electric booster the current is responsible for this. When the driver turns the steering wheel, force is transmitted to the steering rack. At this time, the torque sensor transmits data to the electronic control unit. The controller calculates how much current needs to be sent to the electric motor to optimally facilitate steering rotation. Since the force must be uniform, the speed of movement and the angle of rotation of the steering wheel are taken into account.

If the steering wheel rotates without the vehicle moving or at low speed, as when parking, the electric motor receives maximum current and the steering wheel turns easily. When driving at medium and high speeds, such force is no longer required, and the controller supplies a lower current.

Pros and cons of EUR

The electric booster is a more modern system with high potential for modernization. It is not without its shortcomings, but there are fewer of them than the power steering:

• high price,
• The electric motor cannot provide high power, so it is installed only on passenger cars.

The disadvantages are leveled out, since the design of the electric amplifier is constantly being improved.

The EUR for the Priora has many advantages. The system is easy to maintain due to its simple design. The only part that requires inspection is the rolling bearing. The ESD mechanism has more compact dimensions and can be installed on the steering shaft in the cabin, freeing up space in the engine compartment. Due to this, the durability of the structure increases, since there is no exposure to temperature changes and high humidity.

The electric booster does not take power away from the engine, which saves fuel. The drive only operates when the steering wheel is turned. The ECU is responsible for the operation of the amplifier, with the help of which you can adjust the operating mode of the EUR, taking into account the operating conditions of the vehicle. The electric booster is not afraid of extreme steering positions. Driving at high speed makes the steering wheel with ESD more sensitive.

Differences between EUR and power steering

These are completely different units. To understand the main differences, it is enough to study the hydraulic booster. Its main component is a pump driven by the crankshaft, it is integrated with other parts. The operating principle of the hydraulic booster is based on hydraulics.

As for the electric power steering, it is driven by an electric motor. Its design also includes an electronic control unit, a steering shaft with a torsion element and sensors. The EUR works according to a different scheme:

1. When the steering wheel rotates, the torsion shaft twists;
2. Special sensors record changes in the position of the shaft and send data to the electronic control unit;
3. After analyzing the information, the unit sends commands to the electric motor;
4. As a result, the unit creates the necessary force or facilitates turning the steering wheel.

Car enthusiasts often argue which option is preferable for the “ten”. In fact, power steering is an obsolete unit that is being actively removed from modern passenger cars. The electric booster works even when the engine is turned off and weighs less than the power steering. The main advantage over “hydraulics” is reliability - the electric unit requires virtually no maintenance. There is less load on the engine, and as a result, less fuel is also needed. The EUR is also good for our conditions because it functions well at low temperatures.

But the electric booster also has its drawbacks. Its design is more complex than that of “hydraulics”, hence the high price. Sometimes the electronic control unit sends incorrect commands, this was especially felt by the owners of the first generation Kalina. If you drive for a long time on a poor-quality road surface (or lack thereof), the EUR may turn off for several minutes due to overheating.

Priora steering rack malfunctions

Problems with the functioning of the steering rack can be different. To identify them, it is not necessary to have a wealth of special knowledge; it is enough to periodically inspect the mechanism.

Large steering play

If you turn off the engine and actively turn the steering wheel, there should be no extraneous sounds. When not only suspicious noises appear, but also play is observed, the cause of the problem may be a weakened spool stop or insufficient elasticity of the torsion bar. The steering wheel may play due to severe wear of the silent blocks on which the steering rack is fixed. The same problem occurs when the angle of contact between the teeth and the screw is incorrect, or the curvature of the crankcase or shaft is caused by damage or the stroke of a screw-type bearing. To determine the malfunction, you will need to diagnose the rack bushing, steering rod joints and teeth.

The appearance of knocking and heaviness when turning the steering wheel

The steering wheel becomes heavy due to a soured cardan, but most often it is the knocking that occurs. There are a number of characteristic reasons for this phenomenon:

• noise occurs during the movement of the vertical bearing shaft;
• excessive wear of joints and crankcase;
• exhaustion of the life of a screw bearing, bushing or teeth;
• crooked shaft or crankcase, as a result the screw contacts the teeth with an offset angle;
• wear of silent blocks;
• loose rack fastening;
• steering wheel play.

In any case, you will need to carry out diagnostics, and if malfunctions are identified, you will need to dismantle and repair the Priora steering rack with replacement of worn elements.

Worn steering shaft center tooth

Wear of the mechanism with teeth occurs quite often. The main purpose of the steering shaft is to convert rotational motion into translational motion. Most cars are characterized by the exhaustion of the resource of the central teeth. The reason is simple: movement in city traffic is determined by driving in a straight line with slight deviations of the trajectory to the left or right.

To determine the malfunction, you need to swing the steering wheel to the sides from the middle position. If knocking noises are heard, it is better to carry out further diagnostics at a service station. If the central tooth is worn excessively, the entire shaft must be replaced.

Problems in the operation of the hydraulic booster

All breakdowns of the Priora power steering, as well as the causes and methods of eliminating them, are listed in the table:

In practical terms, power steering is more often replaced with a new one or with a known good one. The original device costs a lot, so they choose analogues. Models from Chinese manufacturers have proven themselves to be an inexpensive option of good quality.

Electric amplifier breakdowns

To diagnose a malfunction of the electric amplifier, you first need to determine the conditions under which the problem arose. There may be several of them:

• the failure occurred after discharging and then charging the battery;
• after turning the steering wheel at a large angle;
• when performing a parking maneuver;
• when driving at speeds above 110 km/h.

Based on these reasons, we can draw a conclusion about the nature of the occurrence of malfunctions. Often the cause of malfunction is low voltage of the on-board network. For normal operation of the EUR, the voltage must be at least 13.5 V. First, the battery is checked. If it is working, it is possible that the on-board network was de-energized after the battery was removed for recharging. To resume work, sometimes it is enough to turn the steering wheel 5-6 times to the extreme positions and back.

If everything is fine with the battery, you need to check the insulation of the wiring and connections for short circuits. The EUR on the Priora does not work in constant mode, like the power steering. The maximum load on the electric motor occurs when the steering wheel rotates at low speed or the car is stationary; the minimum load occurs when driving at speeds over 100 km/h. After reaching 110 km/h, the electric booster does not work at all.

If you hear knocking or other suspicious sounds while driving when turning the steering wheel, the fastening nut may have become loose - it needs to be lubricated and tightened. To do this, you need to dismantle the apron under the steering wheel and remove the casing. Sometimes a situation may arise when the wheels turn spontaneously. This directly indicates a malfunction of the electric power steering control unit.

The main problem with the EUR Lada Priora is that in order to reduce the cost of the design, a high-quality German-made electrical circuit was replaced with a domestic analogue, modified, but “crude”.

If the amplifier and speedometer do not work, then the problem is in the speed sensor - it is either dirty or faulty. The same goes for torque and steering angle sensors. First you need to clean them and reset errors from the on-board computer; for this you can use several methods:

• remove the terminal from the battery, de-energizing the on-board network;
• using diagnostic programs and an adapter for connecting to the OBD II diagnostic connector.

If you suspect that a fuse has blown, it should be checked and replaced if necessary. It is located in the mounting block, in the cabin, below the steering wheel on the left side. If any of the listed malfunctions occur, you can fix them yourself, but to completely replace the electric power steering mechanism, it is better to contact specialists.

Installing power steering - step by step instructions

This instruction is intended for VAZ 2110 cars, which do not have power steering at all. Such models were produced a long time ago, but they can still be found on the road today. In this case, the car can be upgraded with your own hands.

You can install the power steering yourself; for this you will need a power steering kit - today it can be purchased for about 20 thousand. From the tools, prepare a set of keys and screwdrivers; you should also take care of the amplifier fluid in advance.

We dismantle the timing case and install the bracket on three bolts. There are already holes in the interior, so there is no need to drill new ones. Now we install the pin on which the roller will later be installed. There are no holes for it, so we make new ones. Let's put on a video.

Here you can see the fasteners that need to be removed. The photo below shows in detail what needs to be sawed off. After this, securely fix the pump on the bracket and cover it with a pillow. The assembled unit should be placed on the engine, or rather, in the place where the generator was mounted.

You should undertake such work only if you already have experience in servicing the electrical and power plant of the VAZ 2110. Power steering is directly related to safety, so if you lack experience, it is better to turn to the experts.

What needs to be changed to replace the power steering?

How much money to prepare

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Prevention measures

To maximize the service life of the Priora steering rack, follow simple operating rules:

• bumps, potholes and speed bumps must be driven over at low speed and carefully;
• periodically inspect the condition of the anthers and seals;
• The oil in the power steering should be warmed up before driving (short turns by steering wheel);
• It is not recommended to frequently hold the steering wheel in the extreme right or left position.

By following these simple rules, you can avoid expensive repairs or replacement of the unit.