Most modern cars are equipped with hydraulic power steering. The BMW E39 is no exception. Power steering (power steering) requires timely maintenance. If you do not pay attention to its operation and do not control the fluid level in the expansion tank, the power steering pump may fail. Replacing it will be quite expensive.
Repairing power steering in a BMW is not as difficult a task as it seems
The power steering system on the BMW E39 consists of the following components: a hydraulic pump, a radiator for oil cooling, fluid supply and return pipes, an expansion tank, and a steering mechanism.
Symptoms of power steering failure in E39
The following are signs that indicate possible problems with the power steering:
- an additional hum has appeared from under the hood, it may be louder when turning the steering wheel;
- The steering wheel rotates jerkily, sometimes the steering wheel seems to bite;
- difficult movement of the steering wheel to its original position after turning;
- black color of the liquid in the expansion tank;
- lack of fluid in the power steering system reservoir.
If the power steering hums, then in most cases it is necessary to replace the hydraulic pump with a new one. Repair and restoration of such components is possible only in the factory and using special equipment.
What is put into the power steering system?
According to the manufacturer's documentation, two types of fluid can be used in the BMW E39 power steering system. They differ from each other in color and temperature resistance. As a rule, ATF is poured into the system. It has a red color. For cars that are used in countries with cold climates, Pentosin is used. It is green.
Mixing liquids of different types is strictly prohibited!
Switching from ATF to Pentosin and back is allowed only after a complete flush. It is necessary to clean the system when the liquid darkens, also if it is impossible to determine what was filled earlier.
When flushing and changing the oil in the hydraulic power steering, it is necessary to ensure cleanliness. Therefore, you should cover the generator and other parts of the car adjacent to the tank with a clean rag.
Pentosin (right) and ATF (left)
The circulating oil in the system changes its viscosity depending on the temperature. After the engine warms up, rotation of the steering wheel becomes easier. The normal operating temperature of the cooling radiator is 80–90 degrees Celsius. If the weather outside is very hot, then when driving on city streets the oil can heat up to 110–120 degrees. In this case, the fluid in the system loses its required viscosity and rotation of the steering wheel becomes difficult. Lightness returns over time when the oil cools a little.
How to change the fluid in the power steering of a BMW E39
To flush and change the power steering oil, you will need the following tools and consumables:
- car jack;
- rags;
- container for old liquid;
- ATF or Pentosin (follow the recommendations strictly!);
- syringe pump
In total, about 1 liter of fluid circulates in the BMW E39 power steering system. The expansion tank contains approximately 300–400 ml.
Washing procedure:
- Raise the front of the car onto a stand. It is necessary to ensure free movement of the wheels when turning the steering wheel. Be sure to put chocks under the rear wheels to prevent the vehicle from rolling.
- Pump out the fluid from the power steering reservoir using a syringe.
- Remove the return hose from the expansion tank. It is secured with a clamp. Direct the hose into the prepared container.
- Turn the steering wheel from one extreme position to another. This must be repeated at least three times. As a result, almost all the liquid will drain into the container. A small amount may remain in the steering rack and cooling circuit of the system.
- Put the hose back in place and fill with new fluid. Turn the steering wheel from one extreme position to the other several times. The level in the tank should drop. Add oil to the MAX mark. Start the engine and check the level in the reservoir. Turn the steering wheel with the engine running. If necessary, add more fluid to the mark.
- Repeat p.p. 2–5 two more times. After the last flushing cycle, clean liquid should come out of the return. You can fill it with ATF or Pentosin.
Each rinsing cycle uses approximately 800 ml of liquid. It turns out that to completely flush the system and replace it, you need about 2.5 liters of oil.
Stage of complete power steering flushing
When performing a full flush, it is recommended to clean the power steering reservoir. There is a filter at the bottom of the tank. To wash it, you need to remove the expansion tank and disassemble it. To do this, after draining the liquid from the system, unscrew the fastening screw. It is located inside. This can be done using a T20 TORX key. Turn the tank over and you will see the filter. This is a plastic mesh. It is washed with ATF or Pentosin, depending on what you will be pouring into the power steering system. If it is impossible to clean the filter, you must replace the tank with a new one.
Partial oil change in power steering E39
If the owner of a BMW E39 regularly carries out maintenance of the power steering, then a partial oil change can be performed. A syringe pump is used for this. It is used to pump out liquid from the reservoir. Then add new oil. With this method, almost all the liquid is renewed.
And finally, a few recommendations. Look under the hood of your car often. Make it a rule to monitor the oil level in the power steering. Check the color of the liquid periodically - you can use a white napkin for this. Simple prevention and timely oil changes will help you save on repairing the hydraulic power steering pump and on servicing the BMW E39 in general.
BMW E39 power steering service, diagnostics and repairs
Most modern cars are equipped with power steering. The BMW E39 is no exception. Power steering (GUR) requires regular maintenance. If you do not pay attention to its operation and do not control the fluid level in the expansion tank, the GUR pump may be damaged. Replacing it will be quite expensive.
Repairing Gur in BMW is not as difficult as it seems
The power steering system on the BMW E39 consists of the following components: hydraulic pump, oil cooler, supply and return pipes, expansion tank, steering gear.
Symptoms of faulty power steering in E39
The following are signs that indicate possible steering problems:
- An additional hum has appeared from under the hood, it may be louder when the steering wheel is turned;
- Rotating the steering wheel is a jerk, sometimes the steering wheel is a snack;
- difficult movement of the steering wheel to its original position after turning;
- black liquid in the expansion tank;
- lack of fluid in the power steering system tank.
If the HUR is humming, in most cases you will need to replace the hydraulic pump with a new one. Repair and restoration of such units is possible only at the factory and using special equipment.
What is poured into the GUR system?
According to the manufacturer's documentation, the BMW E39 Boost hydraulic system can use two types of fluid. They differ from each other in color and temperature resistance. As a rule, the system is filled with ATF. It has a red color. For cars driven in cold climates, use Pentosin. It is green.
Mixing liquids of different types is strictly prohibited!
Switching from ATF to Pentosin and vice versa is allowed only after a complete rinse. It is necessary to clean the system when the liquid darkens, also if it is impossible to determine what was filled previously.
When flushing and changing the oil in the hydraulic booster, it is necessary to ensure cleanliness. Therefore, the generator and other parts of the car adjacent to the reservoir should be covered with a clean rag.
Pentosin (right) and ATF (left)
Replacing power steering fluid for BMW E46.
Partial oil change gur BMW e46 330!
Replacing power steering fluid in BMW
Most likely, no one had changed this slurry before us, they added at most, we decided to change it together with the barrel.
The circulating oil in the system changes its viscosity depending on the temperature. After the engine warms up, the steering wheel becomes lighter. The normal operating temperature of the cooling radiator is 80-90 degrees Celsius. If the weather is very hot outside and then you are driving on city streets, the oil can be heated to 110-120 degrees. In this case, the liquid in the system loses the required viscosity, and rotation steering wheel becomes difficult. Lightness returns over time as the oil cools slightly.
How to change the fluid in a BMW E39 hydraulic motor
To wash and change the oil in the GIS, you will need the following tools and consumables:
- jack;
- rags;
- container for old liquid;
- ATF or Pentosin (follow the recommendations strictly!);
- syringe pump.
A total of about 1 liter of fluid circulates in the booster system of the BMW E39. The expansion tank contains about 300-400 ml.
BMW E39 power steering system
- Raise the front of the car on a support. It is necessary to ensure free movement of the wheels when rotating steering wheel. Be sure to put chocks under the rear wheels to ensure that the vehicle cannot roll.
- Drain the fluid from the power steering reservoir using a syringe.
- Remove the return hose from the expansion tank. It is fixed with a yoke. Direct the hose into the prepared container.
- Turn the wheel from one extreme position to the other. You need to repeat this at least three times. As a result, almost all liquid will drain into the container. A small amount may remain in the steering rack and in the system cooling circuit.
- Replace the hose and fill with new fluid. Turn the steering wheel several times from one extreme position to another. The tank level should drop. Add oil to the MAX mark. Start the engine and check the level in the tank. Turn the wheel while the engine is running. If necessary, add more liquid to the mark.
- Repeat steps 2-5 two more times. After the last wash cycle, clean liquid should come from the return. You can fill with ATF or Pentosin.
Approximately 800 ml of liquid is consumed during a wash cycle. It turns out that about 2.5 liters of oil are required to clean the entire system and replace it.
Stage of complete power steering washing
When completely flushing, it is recommended to clean the power steering reservoir. There is a filter at the bottom of the tank. To clean it, you need to remove the expansion tank and disassemble it. To do this, after draining the system, unscrew the fixing screw. It's inside. This can be done using a TORX T20 key. When you turn the tank, you will see the filter. This mesh is made of plastic. It is flushed with ATF or Pentosin, depending on what you pour into the power steering system. If it is impossible to clean the filter, you need to replace the tank with a new one.
Partial oil change in Gear E39
If the owner of a BMW E39 regularly uses power steering, a partial oil change can be performed. To do this, use a syringe pump. With its help, liquid is pumped out of the reservoir. Then they add new oil. With this method, almost all the liquid is renewed.
And finally, a few recommendations. Look often under the hood of your car. Make it a rule to monitor the oil level in the power steering. Check the color of the liquid periodically. you can use a white napkin for this. Simple preventive maintenance and timely oil changes will save you money on power steering hydraulic pump repairs and on BMW E39 maintenance in general.
Most modern cars, with the exception of hybrid electric cars, are equipped with a power steering system. This category also includes BMW E39 cars. With the help of power steering, the vehicle's steering wheel rotates without much effort, providing comfortable vehicle control throughout its entire service life. However, the safety of the technological device largely depends on care and timely replacement of oils. We will tell you how to change the mixture in the power steering on a BMW E 39 yourself in a current article.
Replacing power steering fluid in BMW e39
The power steering system in BMW E 39 cars consists of a gear and rack that is connected to the front wheels. A valve inside the rack, under pressure from a special fluid from the hydraulic booster in the pump, moves the toothed bar along which the gear runs, which makes it easier for the wheels to turn. In addition, the design has an expansion tank with special-purpose oil. This hydraulic fluid flows throughout the entire power steering system, allowing the greatest resistance to be exerted from the pump to the hydraulic cylinder, with the help of which the car’s steering wheel turns without much effort.
Hydraulic fluid oil coats all system mechanisms, preventing them from excessive friction and subsequent wear.
The required amount of fluid is marked in the expansion tank at the MIN and MAX levels. Lack of oil in the power steering leads to damage to the pump. Such repairs will cost the driver much more.
Manufacturers of BMW E 39 cars recommend replacing the solution in a timely manner, especially with aggressive and frequent driving. According to the rules, this procedure is carried out once every 2 years, or after 100 thousand kilometers. In some cases, an oil change is required earlier.
Signs that you need to replace the power steering solution:
- the contents in the expansion tank darkened and an uncharacteristic odor appeared;
- complete or partial immobility of the steering wheel;
- feeling of burning smell, etc.
If the above symptoms are detected, the driver needs to replace the mixture urgently. You can do this yourself, following a simple algorithm of actions.
Preparation and complete list of tools
In order to change the oil in the power steering system, you will need a standard set of tools: a jack, socket and open-end wrenches, a syringe with a tube, a clean rag, an empty container with a volume of 1.5 - 2 liters, new fluid.
It is necessary to drain the old fluid with the engine turned off.
Procedure:
- Open the hood of the BMW E 39 and secure it;
- Open the expansion tank valve;
- Insert the tube and pump out the maximum amount of oil using a syringe;
- Unscrew the bottom plug of the pump and pour the remaining oil into the container.
Pouring fluid into the power steering
After cleaning the power steering, it is necessary to pour new fluid of the appropriate color into the expansion tank to the required mark. In order for the oil to be evenly distributed throughout the system, you need to turn the steering wheel several times all the way to the right and left. Next, check the fluid level. In most cases, oil will need to be added.
Hydraulic oil is classified into mineral and synthetic. BMW E 39 cars are most often filled with mineral solution. This oil easily performs all the tasks assigned to it, while allowing metal parts to avoid corrosion and rubber mechanisms not to dry out.
Power steering oil is available in three colors: green, yellow and red. Mixing different liquids is strictly prohibited, since upon interaction the substances disintegrate, forming scale or sediment that is deposited on the walls of the power steering.
Differences in hydraulic fluid by color:
- The red solution is used for vehicles with an automatic transmission. This liquid can only be mixed with yellow;
- Yellow hydraulic fluid is universal and applicable to any type of car;
- Green oil is poured exclusively into vehicles with a manual transmission. It cannot be mixed with oils of other colors.
The parameters of viscosity, the presence of additives and other properties of each hydraulic fluid differ according to the color scheme, which is why, when choosing an oil, you must first of all be guided by color.
Differences in changing power steering oil on other BMW models
The power steering of the BMW E46 can only be filled with a solution of red or yellow color classified Dexron III. The most common brands are Mobil 320 and LIQUI MOLY ATF 110. If you replace the fluid without first cleaning the system, you will need about 1 liter of solution. With flushing - 2-3 liters.
The procedure for changing oil in a BMW E46 is identical to filling fluid in a BMW E39, since the steering system of the vehicle is no different.
BMW E39 power steering service, diagnostics and repair
Most modern cars are equipped with hydraulic power steering. The BMW E39 is no exception. The power steering (power steering) requires timely maintenance. If you do not pay attention to its operation and do not keep the water level in the expansion tank under control, the power steering pump may fail. Replacing it will be quite expensive.
Repairing power steering in a BMW is not as difficult a task as it seems
The power steering system on the BMW E39 consists of the following components: a hydraulic pump, a radiator for oil cooling, fluid supply and return pipes, an expansion tank, and a steering mechanism.
Symptoms of power steering failure in E39
The following are signs that indicate possible problems with the control amplifier:
- an additional rumble has appeared from under the hood, it can be louder when turning the steering wheel;
- rotation steering wheel it happens jerkily, from time to time the steering wheel seems to bite;
- obstruction steering wheel to the initial position after rotation;
- black color of water in the expansion tank;
- lack of water in the power steering system reservoir.
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If the power steering hums, then you almost always need to replace the hydraulic pump with a new one. Repair and restoration of such components is possible only in industrial conditions and with special equipment.
What is put into the power steering system?
According to the manufacturer's documentation, two types of water can be used in the BMW E39 power steering system. They differ from each other in color and temperature resistance. As a rule, ATF is poured into the system. It has a reddish color. For cars that are used in countries with cold climates, Pentosin is used. It is green.
Combining waters of different types is strictly prohibited!
Switching from ATF to Pentosin and back is allowed only after a complete flush. The system needs to be cleaned when the water becomes dark, or if it is impossible to find what was previously filled.
When flushing and changing the oil in the hydraulic power steering, you need to ensure cleanliness. Therefore, you should cover the generator and other parts of the car adjacent to the tank with a clean rag.
Pentosin (right) and ATF (left)
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BMW E39 power steering replacement
Help the project BMW E34 AntiTaz: card number 4276 3801 6648 8689 SberBank Viza Classic, THANK YOU for yours.
Replacing power steering fluid for BMW E46.
Partial oil change gur BMW e46 330!
The circulating oil in the system changes its viscosity depending on the temperature. After the engine warms up, rotation of the steering wheel becomes easier. The normal operating temperature of the cooling radiator is 80–90 degrees Celsius. If the weather outside is very hot, then when driving on city streets the oil can heat up to 110–120 degrees. With all this liquid in the system loses its necessary viscosity and rotation steering wheel becomes difficult. Lightness returns over time when the oil cools a little.
How to change liquid in the BMW E39 hydraulic booster
The following tools and consumables will be useful for flushing and changing the power steering oil:
- auto jack;
- rags;
- container for old water;
- ATF or Pentosin (follow the advice strictly!);
- syringe pump
In total, about 1 liter of water circulates in the BMW E39 power steering system. The expansion tank contains approximately 300–400 ml.
BMW E39 power steering system
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- Raise the front of the car onto a stand. It is necessary to ensure free movement of the wheels when rotating steering wheel. Be sure to put chocks under the rear wheels to prevent the vehicle from rolling.
- Deflate liquid from the power steering reservoir using a syringe.
- Remove the return hose from the expansion tank. It is secured with a clamp. Direct the hose into the prepared container.
- Turn the steering wheel from one extreme position to another. This must be repeated at least three times. As a result, almost all of the liquid. A small amount may remain in the steering rack and cooling circuit of the system.
- Put the hose back in place and fill in the new one. liquid. Turn the steering wheel from one extreme position to the other several times. The level in the tank should drop. Add oil to the MAX mark. Start the engine and check the level in the reservoir. Turn the steering wheel with the engine running. If necessary, add more fluid to the mark.
- Repeat p.p. 2–5 two more times. After the last flushing cycle, the return should come out clean. liquid. Can flood ATF or Pentosin.
Each rinsing cycle uses approximately 800 ml of liquid. It turns out that to completely flush the system and replace it, you need about 2.5 liters of oil.
Stage of complete power steering flushing
When performing a full flush, it is recommended to clean the power steering reservoir. There is a filter at the bottom of the tank. To wash it, you need to remove the expansion tank and disassemble it. To do this, after draining the liquid from the system, unscrew the fastening screw. It is located inside. This can be done using a T20 TORX key. Turn the tank over and you will see the filter. This is a plastic mesh. It is washed with ATF or Pentosin, depending on what you want flood into the hydraulic booster system. If it is impossible to clean the filter, you must replace the tank with a new one.
Partial oil change in power steering E39
If the owner of a BMW E39 regularly carries out maintenance of the power steering, then a partial oil change can be performed. A syringe pump is used for this. With its help they pump out liquid from the reservoir. Then add new oil. With this method, almost all liquid
The Moscow service center Sport KB carries out repairs and maintenance of the steering control of BMW E39 cars (520i, 523i, 525i, 528i, 530i, 535i, 540i, M5, 520d, 525d, 525tds, 530d), regardless of the degree of complexity.
Replacing the BMW E39 power steering fluid (81229400272), if necessary, involves replacing pipes, seals (32411128333), the power steering pump reservoir (32416851217, 32411097164) with a built-in filter, or its pump. The replacement is carried out based on the results of computer and manual diagnostics of the condition of the vehicle’s suspension and steering in order to completely eliminate possible additional malfunctions of the front suspension of the BMW E39. Any identified defects in the steering, as well as the engine, transmission or chassis of the BMW E39 can be quickly and inexpensively repaired on site.
Signs that a BMW E39 power steering fluid needs to be replaced
- The main determining factor for establishing the need for an urgent replacement of the working fluid in the BMW power steering is the identified change in its properties (color, consistency, smell).
- A sign that the power steering fluid has significantly lost its properties is a drop in engine speed when the steering wheel is turned.
- A malfunction of the power steering system is indicated by a decrease in the ease of rotation of the steering wheel - the difficulty will be more significant the worse the condition of the line and the working fluid.
Any manifestations of BMW E39 power steering malfunctions in the Sport KB service will be eliminated promptly, reliably, inexpensively and with a guarantee for the services provided.
Photos from the repair area
