Leaning on the air. Air suspension repair Mercedes W220 - what can you do yourself? "AIRMATIC STOP, CAR TOO LOW!" - red on the dashboard. Possible reasons. Additional options for air suspension control Install the pneumatic system on the Mercedes

For every car enthusiast, it is very important not only to keep your car safe and sound, but also to improve it every day. There are more than enough amateurs in our country! To do this, people buy their own garages, a huge number of different tools and spend a lot of time. And this is correct, because, as you know, it is better to do everything yourself well than to trust a stranger and get something dubious.

There are several ways to improve a car:

Cleaning the internal system and interior. This will provide the vehicle with easy operation and good looks.

Install a zero resistance air filter. It will make the job easier internal engine, will reduce the risk of sudden breakdown.

Change tires and wheels. The stability of the wheels on the road will improve, and with balanced alloy wheels, even the handling of the car.

Clean the exhaust manifold. This will ease the bandwidth, which is very budgetary.

Replace some parts of the brake system. It will provide your family with more safety and give you confidence on the road.

Replacing the suspension of a passenger car with pneumatic

There is one more small item that will help you improve a passenger car - improve or completely change the suspension to pneumatic. This will help to completely change the comfort and handling of the car. But what if there is no money for this, and there is only an opportunity to collect it yourself? How to install the air suspension correctly passenger car with your own hands? The answer is to figure it out and make it by hand.

First, it is necessary to acquire all the constituent elements of this system. Compressor, pneumatic bags, connecting pipes, control units, pressure gauges, valves and air injection cylinders are required. All this can be bought inexpensively in mechanical and electrical stores, it will not be difficult to find this if the model of your car is widely known and widespread in Russia. If buying everything separately is not an option, then you can buy a full set of equipment, but you will have to spend about 30 thousand rubles.

Now, briefly about how to replace such a thing as air suspension. First of all, you need to disassemble the front suspension, but leave the original housing of the support legs. Next, we bore the body to the required size of the air cylinder. We replace the suspension struts with air bags. This part of the work is the most difficult and tidy, because it requires care and attention. After the above procedures, we lay the tubes connected to the cylinders and the receiver from the back side. It is convenient to install the receiver in the trunk, place and strengthen the pressure gauges there.

Car air suspension pressure

The pressure must be distributed correctly. Due to the congestion of the front, we set 8 atmospheres for the front wheels, and 6. For the rear wheels, we will have to make the structure heavier, but add a compressor. The last step is the simplest - you just need to add the electrics: wiring, fuses, switches. Their arrangement should be harmonious and unique for each vehicle.

Air suspension for a car is a suspension by which body height can be adjusted relative to the road, change the clearance for off-road travel.

What is air suspension?

The air suspension is used for trucks and various trailers. This suspension is also used in business class cars. It can be the basis for existing similar pendants.

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The main purpose of this device is ensuring higher road safety and comfortwhen moving. Some business cars are equipped with pneumatic elements at the heart of the adaptive suspension.

Air suspensions can be classified into three main types. it single-circuit suspensions, double-circuit and four-circuit... The air suspension is often included in a ready-made vehicle package, and can also be installed independently. If you install the suspension yourself, you have the option of manually adjusting the body height. What is the difference between all three types:

1. Single-circuit suspension is designed for one axis machine (back or front). Single-circuit suspension is often installed on trucks, where the emphasis is on adjusting the rear axle of the vehicle, depending on the load on the body.

2. Double-circuit air suspension can be installed on two axles and one. This allows the regulation of two axes. But if the dual-circuit suspension is installed on only one axle, then each wheel can be independently adjusted.

3. Four-circuit air suspension is a complex system. In this mode all four wheels can be adjusted, the back-up system is carried out. Such a pneumatic system is controlled using. The support pressure regulation is carried out with the assistance of special sensors.

The basis of the air suspension structure consists of a control unit, special sensors, a compressor for air supply, a receiver, pneumatic elements for each wheel and a control unit. When the suspension is working automatically, body height is adjustable depending on speed, inclination etc. The operation of automatic and manual adjustment is slightly different. But in general, the principle and purpose have the same meaning.

What cars does it come from the factory on?

It is interesting to know that one of the first cars that was equipped with air suspension was Citroen DS in 1955... And imagine, in the very first days, this car model received a huge number of applications, a third of which were made literally within the first hour.

Serial production of the Citroen DS was the first to include air suspension. Today, also, the production of cars of this brand with such a complete set continues, as well as cars such as Toyota, Mercedes, etc. The air suspension is best used in conjunction with the standard suspension. It will, as it were, take on part of the load, working as an auxiliary element.

To be able to adjust the height of the body relative to the road lane, you can install an air suspension and use it in conjunction with the standard suspension. Cars that are designed to carry various loads, with large bodies and medium-sized trailers, available with built-in pneumatic system... For example, such as Mercedes, Renault Master, etc. Also various models of dump trucks, large-sized trucks for transportation of large loads. In these types of vehicles a pneumatic system is required. It facilitates the movement of the vehicle and makes the ride easier and more comfortable.

What machines can I install myself?

How to make an air suspension yourself and on which car models can you install it? In practice, manufacturing is not particularly difficult. Contrary to popular belief that such an installation is unreliable, this process is quite effective and realistically feasible.

You can design and install yourself air suspension for VAZ car... There are some important points to keep in mind. The most difficult moment in the manufacture of a suspension for a VAZ is the replacement of shock absorbers with pneumatic cushions. It is better to use the original rack body for support. It is necessary to take into account the features of a specific VAZ model and the type of pneumatic cylinders used.

To design an air suspension for a VAZ car, you will need a set of certain parts and mechanisms. No worries. There are no difficulties in this process.

What is needed for this:

1. Compressor.

2. A set of 4 pneumatic cushions. When selecting pillows, specific models can be used specifically for VAZ, and there can also be others that are suitable from other car models.

3. Receiver for air injection. It should be cylindrical for a VAZ sedan. For hatchbacks, the receiver is shaped like a spare wheel.

4. You will need 4 pcs. solenoid valves.

5. Connecting tubes.

6. Two pressure gauges.

Directly during the manufacturing process, you may need to buy other related parts, wires, fasteners, etc. Approximate the cost of all elements in total will be from 800 to 1200 dollars... It depends on the individual design parameters and the car model.

Advantages and disadvantages

Like any device, the air suspension also has advantages and disadvantages. One of the advantages of having a pneumatic system is the absence of noise and the smooth running of the car. A big plus is automatic clearance adjustment and the stiffness of the struts during movement. These qualities are inherent in factory installation systems. With regard to the four-circuit pneumatic system, manual installation, with such a model with automatic control, is not used at all. Because it is a very complex and costly process to do it yourself.

The disadvantage is low probability of successful repair... For example, pneumatic struts, failing, already not repairable... All you need is replacement parts.

The cost of the kit and the installation itself

If we talk about cost pneumatic system, then it is different. Depends on the type (single-circuit, double-circuit, four-circuit). And also the price depends on the manufacturer and supplier. In the price range in Ukraine the cost of pneumatic elements and kits can be from 4,000 to 25,000 UAH.Depends again on the type of model.

The installation cost depends on the needs. On average, it can be from 2,500 to 10,000 UAH. It depends on your goals and individual wishes. Before proceeding with the installation, you need to clearly and in detail explain to the master all the nuances. Because every revision is an additional cost. It is not always necessary to buy completely all the parts to assemble a kit. For this, it is advisable to get the advice of a specialist in this field. After that already summarize the entire cost of installation and related itemsworkflow.

The possibilities for tuning your car are almost endless. Starting with external and ending with cardinal technical changes. One of the biggest changes can be the air suspension, which will make people pay attention to your car. This device has many advantages:

• the car becomes more dynamic;
• increased stability;
• air suspension unloads the suspension, thereby increasing its resource;
• the car will become more comfortable.

The main disadvantage is the price. Installing air suspension in a tuning studio will cost a pretty penny. It is this factor that discourages most motorists from adding this tuning element. But if you have the desire and the opportunity, then the air suspension with your own hands is not as difficult as it might seem.

Where to start, of course, with collecting the necessary components. The air suspension is a rather rare tuning element, so it is difficult to find an assembly.

Components

Air suspension cushions are what will have to spend the most money, in fact, the cushion replaces the spring and shock absorber, as for the choice, it all depends on your car. At the moment, there is a wide selection on the market, you can definitely choose the right part for yourself.

Installation

The installation process on modern vehicles is very similar.

It all starts with removing the native rack. For this

1. Unscrew the nut on the steering end and pull it out of the rack.
2. Unscrew the nuts securing the strut to the steering knuckle and securing the upper support.
3. Remove the brake hose.

In the future, from the old rack, you will need a travel stop for the upper support and a support with a bearing. Further events can develop in two ways

The finished air suspension is installed in the reverse order. Screw the upper strut support to the steering knuckle, put in place the steering tip and brake hose. Then you deal with the hoses (it all depends on the device of the car, in principle there is nothing complicated) and install the valves. Install electronics (toggle switches, start buttons and wires) and connect everything.

Functional check

The ideal test should take place indoors. Fill the system with air (8 atm is enough), close the garage and listen carefully so as not to miss possible air leaks. If the first step is successful, check all connections with soapy water. This is followed by a final check for raising and lowering the vehicle. That's all, the air suspension is installed by hand. This is how, following the instructions, you can personalize your car, please yourself and surprise others.

There will be no bagel versus sleeve comparisons in the topic. High quality Pindos air bags will not be mentioned.

Only availability, simplicity, cheapness.

So, we are talking about Scania cockpit pillows.

Ready-made cockpit pillows are definitely great and wonderful. Modified with a file - installed. What could be easier.

But what if the pillow cannot be installed in this form, if you need other characteristics, less travel?

One of the most common problems when installing air suspension on VAZ PP is the location of the lower bracket of the rear cushion. If you put it on a spring cup, the plastic part of the bracket will be higher than the rack body, and if the suspension breaks down, there will be a blow to this same plastic bracket. In addition, he will not let the car sink below.
Well, we saw off the cup, grind out the retaining ring and weld it 5-7 cm below the spring cup. The problem with the protruding bracket is solved, but another problem appears.

The spring cup is at the level of the rubber profile, and lowering the lower point of the cushion below, we set the bracket just opposite the wheel - accordingly, there is a chance to wipe the cushion, especially when installing wheels with a larger width and diameter.
The solution to the problem has several options: installing bagels, moving the mount back up, installing spacers on the wheels, shortening the pillow with the installation of other braces.

Another equally common problem is the mismatch between the inner diameter of the pillow and the diameter of the A-pillar housing. The same problem can be attributed to the inability to put on the pillow through the outer nut or ledge on the rack.

This problem is also solved in different ways.

Someone sharpens plastic:

Someone grinds special cases:

Well, one more option:

All of these options include only a full-length sleeve.

But what if you really want a short sleeve or you need to reduce the length of the sleeve?
This issue cannot be resolved without solving the problem of sleeve sealing.

At the factory, the sleeve is crimped with a special ring. The ring has certain strength characteristics and resistance to corrosion, in addition, a special machine is needed to crimp this ring (like those that crimp RVD). All this makes the method of crimping practically impracticable at home.

But there is one relatively simple way to shorten your Scaniev pillows.
Quote: " The process of shortening the same Scaniev pillow is as follows. The elastic is cut with a knife along the edge of the metal ring. The metal ring slips out with little effort without an elastic band. We shorten the elastic of the pillow to the required length. We put the same metal ring on the pillow and press it into place like an oil seal using a machine or a press and soap solution. On Scaniev pillows, it is better to shorten the pillows from above, since they have a metal upper support.
In this way, the pillows in this photo are shortened. Although the rings are cut for the convenience of folding the pillow. You can sharpen new rings, but the dimensions must be taken from the originals."

Knowing the general principle, you can order the necessary components for the turner:

It is not very convenient to look for a press every time to assemble a disassembly. Therefore, it is possible to seal using bolted cones:

There is another way. This method is based on the principle of connecting the union nut for plastic pipes CAMMOZI.

We communicate, share experience in the operation and maintenance of Mercedes Sprinter cars, help other participants to understand the problems that have arisen.

Air suspension

Air suspension

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Pneumatic system on a Mercedes Sprinter DIY

Do-it-yourself air suspension installation on a Mercedes Sprinter - how to install an air suspension on a Sprinter without the help of others

Are you going to make an air suspension for a Mercedes Sprinter with your own hands? Then it is worth contacting us for you, because we produce finished products designed for self-installation. Do-it-yourself gearbox repair on a VAZ 2110 (photo. Reference and information publication manual for repairing a Mercedes on your own. Naturally, you can, without the help of others, make an air suspension on Mercedes Sprinterby purchasing all the components separately. But for this you need to understand all the technical aspects. First, we are talking about a suitable cross-section, height of pillows, compressor capacity, etc. A more common option would be to purchase a ready-made kit, which is installed according to the annotation. But the pneumatic system of the air-ride fiat ducato Elabuga on air suspension with your own hands. Pneumatic system. 6 g4fc buy a mercedes sprinter 311 do it yourself on. By contacting us, you can install the air suspension on Mercedes Sprinter by its hands using a standard set of tools.

The use of a pneumatic system for this car model is very popular, because it can significantly increase the life of the factory suspension. Apart from this, the carrying capacity of the car will significantly increase, and the pressure in the wheels can be regulated directly from the car interior. For the convenience of using the pneumatic system, it is recommended to install a control unit that can fully control the operation of the air bags. We are talking about the installation of one, two or four circuit control systems, as well as certain additional options (pumping wheels, pseudosignal, etc.). What improvements can be done with your own hands on cars kia rio... Success like. From the article you will learn how the lambda probe snag is made with your own hands and whether it is worth installing it on your car. Such functions are impossible without the introduction of a receiver, which allows you to greatly expand the functionality. Installing the engine on a mercedes sprinter. Very often, owners want to replace the air filter with their own hands with a Renault Duster, this is not difficult, you need to know the catalog number of the filter and all the actions that need to be done. Mercedes sprinter with new Japanese engine for yours. The final choice depends on the personal needs of the client.

Do-it-yourself air suspension installation on a Mercedes Sprinter - how to install air suspension on a Sprinter yourself

Have you decided to make an air suspension on a Mercedes Sprinter with your own hands? Then you should contact us, as we manufacture finished products designed for self-installation. Of course, you can make your own air suspension on a Mercedes Sprinter by purchasing all the components separately. But for this you need to understand all the technical nuances. First of all, we are talking about a suitable diameter, pillow height, compressor power, and so on. A simpler option would be to buy a ready-made kit, the installation of which is carried out according to the instructions. Contacting us, you can install the air suspension on a Mercedes Sprinter with your own hands using a standard set of tools.

The use of a pneumatic system for this car model is very popular, since it can significantly increase the life of the factory suspension. In addition, the carrying capacity of the car will significantly increase, and the pressure in the wheels can be adjusted directly from the passenger compartment. For the convenience of using the pneumatic system, it is recommended to install a control unit capable of fully controlling the operation of the air bags. We are talking about the installation of one, two or four circuit control systems, as well as certain additional options (pumping wheels, pveum signal, and so on). Such options are impossible without the use of a receiver, which allows you to maximize the functionality. The final choice depends on the individual needs of the client.

DIY air suspension on Mercedes Sprinter

Thanks to our ready-made kits, the air suspension on a Mercedes Sprinter with your own hands is a rational solution that allows you to significantly save on installation services.

In order to install the pneumatic system on a Mercedes Sprinter with your own hands, you will need about 5-6 hours. Our instructions will help you with this, which describes all the necessary aspects of installation. When installing air suspension on a Mercedes Sprinter with your own hands, you do not have to drill additional holes, since our kits are thought out for a specific car model. This is an important point for every Mercedes Sprinter owner. Our finished products are distinguished by their thoughtfulness and reliability, as they have been installed on hundreds of vehicles, so you will not have any problems with either installation or operation.

How to install a pneumatic system on a Mercedes Sprinter yourself

What you need to know about self-installation of the pneumatic system on the Mercedes Sprinter? The standard installation procedure usually consists of the following steps:

• raising the car on a jack or lift;
• removal of bumpers and cleaning of attachment points from dirt;
• preparation of brackets, flanges for mounting air bags;
• installation of air duct elements, as well as installation of pneumatic cylinders in place of bumpers;
• installation of system devices, in particular, a piston compressor, receiver, sensors and control unit.

It should be understood that anyone who does not have professional skills can install a pneumatic system on a Mercedes Sprinter with their own hands. Our instructions will help you with this, in which you will find all the necessary information for installation. As a result, the installation will help to obtain a wide range of adjustments for the suspension and ground clearance of the car, which will be appreciated by every driver, especially when it comes to commercial vehicles. The new energy intensity of your Mercedes Sprinter will delight you for years.

Installation of air suspension on Mercedes-Benz Sprinter Classic

This car quite often resorts to additional tuning with a suspension. Many owners are wondering how to increase lifting capacity ? Using this example with photographs, we will show how you can maintain the nominal body height when fully loaded or when overloaded. Manufacturer Mercedes does not initially sell versions Sprinter Classic with air suspension. But we found a solution: an additional air suspension for Mercedes Sprinter Classic. The main advantage of this air suspensionthat the original package of springs remains in place. Pneumatic springs do not allow the car to sink when fully loaded, so the springs remain in their normal position (as without load) and operate in the correct range. Without air suspension installation over time, the springs sag in every commercial vehicle and you have to change the leaf springs (depending on the daily load of the car). With additional air suspension from the company Pneumocylinders.ru tired springs can be minimized and the factory springs can be preserved for decades.

Mercedes-Benz Sprinter Classic

The official load capacity of the Mercedes-Benz Sprinter Classic is 960 kg. Due to the large cargo compartment, users try to load the Classic with an overload of up to 3-4 tons. Only the additional air suspension will not allow the springs to bend in the opposite direction.

This vehicle has been fitted with this Airride 241030 air suspension kit: Mercedes-Benz Sprinter Classic:

The pressure in this kit can be adjusted using a simple car nipple. Each time, if necessary, the driver connects the compressor and pumps air into the system. To control pressure from the instrument panel without leaving the car, we recommend installing one of the control systems. In this project, a two-circuit control system with a receiver was installed:

Installation of the rear air suspension kit took about 5 hours. Each axle air suspension kit comes with an instruction manual, so you can install air suspension on Mercedes-Benz Sprinter Classic.

Air suspension kits come with all required components and accessories. This is a serial air suspension kit for Mercedes Sprinter Classic, which has been installed on more than hundreds of cars, so you will not have any difficulties with its installation. There is no need to drill / weld any parts of the car. This is a very important circumstance especially for those owners whose Mercedes-Benz Sprinter Classic is still under the official warranty.

The control system is installed in a hidden niche from prying eyes. The control system with a receiver gives an additional opportunity to set options such as pneumatic pumping and pneumatic signal (the loudest event that your car can produce).

The pressure gauge and control buttons are set to dashboard... The pressure in the cushions can be raised / lowered even when the car is not running.

Air suspension

Air suspension

I supplied myself with additional American Firestone air springs as I was told number 1 in the world. So far I have driven about 20,000 km on them. The impression is the most positive. I have 515, put them instead of bumpers. No drilling in the frame. What are the sensations from the pillows: 1) There is no side swing, even in strong wind (I have an awning of almost 29 cubic meters and 225 tires) 2) Confident entry into turns laden. 3) When loaded with 3 tons, it stopped blind people oncoming (the corrector did not help before headlights) 4) I used to try not to load a heavy load on the backside, now I load it.
When I load 3 tons, I pump up the suspension so that the springs are straight or slightly loaded, the load on the frame is 3 points earlier, it was 2 points. It seems to me that the air suspension should take care of the shock absorbers. There are no squeaks. Time will show how it will behave in winter, those who installed it said that everything would be fine. The guarantee was given for 2 years. There are a lot of them installed in Moscow, but for some reason no one wants to give feedback. After 3 months I decided to unsubscribe a little. The pleasure is not cheap. I gave 60,000 rubles for everything. They took 12,000 rubles for the work (half a day of work, even less). On other Sprinter models - the suspension is cheaper. They made a Ford Transit nearby, they also have a cheaper suspension.
Who installed it said that in case of failure of the pillow after the warranty, she or they cost no more than 6,000 rubles.
At least pillows do not allow my native springs to sink. Without pillows, sooner or later the springs will have to be changed anyway. They also don't come cheap with work.

Before that there was a theme viewtopic.php? F \u003d 4 & t \u003d 839, but to make it easier for interested people to find it, I created a new theme.

Re: Air suspension

Re: Air suspension

The mode is the most common - when I bleed the air empty, I leave 0.5 atm. When I pump a loaded one, depending on the weight of the load, I orient myself by the springs, I try to keep the springs straight or slightly loaded. The pressure should be no more than 6 atm. And for our sprinter, this is a load weighing about 3.5-4 tons.

German manufacturers strive to constantly modernize the design of their cars, and therefore it is quite rare to repair the air suspension of the Mercedes W220. However, you should be aware of both the design of the suspension itself and the stages of repair when it will actually be needed.

1 Design features of the Mercedes W220

Air suspension not only simplifies machine control, but also provides additional safety. There is a possibility to quickly change the clearance. The control unit allows the maximum use of the lifting capacity, which helps to solve the stiffness problem. Mercedes has a suspension that allows you to choose the best operating mode. For example, for off-road and country roads, the softest is "comfort". In the city, the standard mode is suitable, and for a good highway - "sport". Also on the W220 it will not be difficult to drive onto the curb for parking, get out of the deep rut.

Instead of traditional springs and torsion bars, the air suspension is supplied with air cylinders. The compressor, in turn, will supply the required amount of air based on the mode. This allows you to achieve maximum ground clearance 307 mm, which means that you can overcome a depth of 600 mm.

The air bellows in the car are designed for both the front and rear axles. They are controlled by the pneumatic system, which includes a compressor, a receiver (compressed air reservoir) and a control unit. The size of the valves, the diameter of the air line, the volume of the receiver and air bellows are specially selected for the W220 so that the compressor works at full capacity.

Typically, a Mercedes can drive at least 100 thousand kilometers before problems with the air suspension arise and repairs are required. But here you should take into account the quality of the roads on which you have to drive. Therefore, it does not hurt to do a diagnostic examination every 50 thousand kilometers.

2 The main problems of air suspension

To avoid premature repair, you need to pay attention to typical problems that may arise:

• The rear axle begins to drop, especially when the engine is off;
• When starting, the opposite process occurs, while at the very beginning the rear axle rises, and then the front;
• High speed leads to the fact that the front axle is lowered, and when braking it rises sharply;
• The ground clearance of the W220 also constantly floats and is difficult to adjust, moreover, there is a slight skew.

Air suspension problems often begin with air leaks. This is due to the operation of the valves and connecting elements, the compressor ceases to function normally due to wear of the rings. In addition, anti-icing agents that are sprinkled on roads in winter fall on the air bellows and this leads to premature corrosion.

3 Replacing the air strut in the W220

Periodically, a situation arises when the replacement of pneumatic struts is required. Mercedes, as you know, has various air suspension modifications. For example, for the W220 Airmatic, you have to change the C-pillar more often and here it is important to follow the stages. However, this repair can be done in-house. This will require the following:

The upper part of this air suspension element is sealed with adhesive. Over time, it cracks, and the air lock begins to let air through. The body is constantly lowered, so you have to make repairs with the replacement of the rack.

4 Elimination of possible malfunctions in the Mercedes W220

There are some other problems that affect the control unit to a lesser extent. More often, repairs concern air bellows and plugs, since corrosive substances, dirt and moisture constantly get into them. The receiver housing may even crack, or the connecting tube of the system may fray (it, like the cylinder, must be replaced). It is necessary to check the condition of the valves, as sometimes the coils burn out. Even a slight misalignment will require calibration and special equipment will be required here. But the compressor, on the contrary, is much less likely to fail.

Mercedes requires periodic computer diagnostic examination. Therefore, serious repairs or when a small problem arises for a Mercedes, unlike competing cars, is not always necessary. In addition, the W220 air suspension has good air struts, which are automatically adjusted by the control unit. Everything will depend on the road surface and conditions, while nothing will prevent you from switching to manual control (for this, just press the switch located on the dashboard).

The car has four damping modes. They are designed to monitor the condition of the coating and provide smooth running and control. For example, at a speed of 140 km / h, the clearance will automatically decrease to 15 cm, and at 70 km / h the level will be restored.

Diagnostics and prevention will prevent many problems from occurring, and timely replacement of faulty elements of this system will allow you to drive on any route absolutely calmly. Minor repairs can be performed on your own, but if you are faced with more serious problems, then it is better to trust the professionals - the Mercedes W220 deserves it.

Before starting work, disconnect the vehicle battery to prevent short circuits of electrical components. For instructions on disconnecting the battery, contact the vehicle manufacturer.

Terms of work

• Storage temperature 5 ° F (-15 ° C) to 122 ° F (50 ° C);
• Beware of damage to pneumatic lines and cables;
• Installation and dismantling operations must be carried out by qualified personnel;
• Use the vehicle manufacturer's software to diagnose it.

CAUTION: Damage to vehicle and air suspension may result if work is performed in the wrong sequence or when methods are used that are not in accordance with this document.

Look in your vehicle manual or your dealer for the location of the jack support points and read the safety instructions and maintenance car. It is strictly forbidden to carry out work under vehicleif it is not fixed with a sufficient degree of reliability. Failure to observe this rule will result in serious injury or death.

Removing the pneumatic rack

1. Set the steering wheel to the straight-ahead position of the vehicle.
2. Raise the vehicle.
3. Remove the front wheel.

4. Disconnect the shock absorber control cable connector located in the wheel arch.

5. Loosen and remove the two (2) bolts holding the bottom of the air strut to the bottom bracket.

6. Open the shock absorber cover and disconnect the air line from the air shock absorber.

7. Remove the three (3) nuts securing the top of the shock absorber.

8. Disconnect the upper arm pivot from the actuator and remove the air spring.

1. Dismantling is complete.

Installing the front shock absorber

Removing the rear air shock absorber

1. Remove the rear wheel.

2. Remove the side shroud in the rear panel to expose the top of the air spring. (located in the area of \u200b\u200bthe rear window of the car).

3. Disconnect the air line and remove the three (3) retaining nuts on top of the air spring.

4. Remove the rubber boot and disconnect the electrical connector from the shock absorber solenoid valve.

5. Remove the caliper retainer.

6. Loosen the two (2) bolts on the back of the caliper.

7. Disconnect the transducer connector and remove the transducer bracket.

8. Secure the caliper securely.

9. Disconnect the outer arm.

10. Disconnect the stabilizer.

11. Remove the bolt and nut connecting the arm and shock.

12. Slightly loosen the nut on the lower arm. This will release the lower arm a little.

13. Remove the shock absorber.

1. Dismantling is complete.

Installing the rear shock absorber

When installing, tighten all bolts and nuts to manufacturer specifications.

1. Installation is carried out upside-down.

Mounting the shunt electronics

1. Locate the N51 Control Unit labeled "Temic". It is located on the left side of the fuse box.

2. Disconnect all 3 connectors.

3. Connect the blue connector on the Electronic Shunt Module to the 2-pin connector on the N-51 harness.

4. Connect the electronic shunt module ground to the nearest vehicle ground.

5. Install the fuse (12V) in the fuse box.

6. Close the fuse box.

German manufacturers strive to constantly modernize the design of their cars, and therefore it is quite rare to repair the air suspension of the Mercedes W220. However, you should be aware of both the design of the suspension itself and the stages of repair when it will actually be needed.

1 Design features of the Mercedes W220

Air suspension not only simplifies machine control, but also provides additional safety. There is a possibility to quickly change the clearance. The control unit allows the maximum use of the lifting capacity, which helps to solve the stiffness problem. Mercedes has a suspension that allows you to choose the best operating mode. For example, for off-road and country roads, the softest is "comfort". In the city, the standard mode is suitable, and for a good highway - "sport". Also on the W220 it will not be difficult to drive onto the curb for parking, get out of the deep rut.

Instead of traditional springs and torsion bars, the air suspension is supplied with air cylinders. The compressor, in turn, will supply the required amount of air based on the mode. This allows a maximum ground clearance of 307 mm to be achieved, which means that a depth of up to 600 mm can be overcome.

The air bellows in the car are designed for both the front and rear axles. They are controlled by the pneumatic system, which includes a compressor, a receiver (compressed air reservoir) and a control unit. The size of the valves, the diameter of the air line, the volume of the receiver and air bellows are specially selected for the W220 so that the compressor works at full capacity.

Typically, a Mercedes can drive at least 100 thousand kilometers before problems with the air suspension arise and repairs are required. But here you should take into account the quality of the roads on which you have to drive. Therefore, it does not hurt to do a diagnostic examination every 50 thousand kilometers.

2 The main problems of air suspension

To avoid premature repair, you need to pay attention to typical problems that may arise:

• The rear axle begins to drop, especially when the engine is off;
• When starting, the opposite process occurs, while at the very beginning the rear axle rises, and then the front;
• High speed leads to the fact that the front axle is lowered, and when braking it rises sharply;
• The ground clearance of the W220 also constantly floats and is difficult to adjust, moreover, there is a slight skew.

Air suspension problems often begin with air leaks. This is due to the operation of the valves and connecting elements, the compressor ceases to function normally due to wear of the rings. In addition, anti-icing agents that are sprinkled on roads in winter fall on the air bellows and this leads to premature corrosion.

3 Replacing the air strut in the W220

Periodically, a situation arises when the replacement of pneumatic struts is required. Mercedes, as you know, has various air suspension modifications. For example, for the W220 Airmatic, you have to change the C-pillar more often and here it is important to follow the stages. However, this repair can be done in-house. This will require the following:

The upper part of this air suspension element is sealed with adhesive. Over time, it cracks, and the air lock begins to let air through. The body is constantly lowered, so you have to make repairs with the replacement of the rack.

4 Elimination of possible malfunctions in the Mercedes W220

There are some other problems that affect the control unit to a lesser extent. More often, repairs concern air bellows and plugs, since corrosive substances, dirt and moisture constantly get into them. The receiver housing may even crack, or the connecting tube of the system may fray (it, like the cylinder, must be replaced). It is necessary to check the condition of the valves, as sometimes the coils burn out. Even a slight misalignment will require calibration and special equipment will be required here. But the compressor, on the contrary, is much less likely to fail.

Mercedes requires periodic computer diagnostic examination. Therefore, serious repairs or when a small problem arises for a Mercedes, unlike competing cars, is not always necessary. In addition, the W220 air suspension has good air struts, which are automatically adjusted by the control unit. Everything will depend on the road surface and conditions, while nothing will prevent you from switching to manual control (for this, just press the switch located on the dashboard).

The car has four damping modes. They are designed to monitor the condition of the coating and provide smooth running and control. For example, at a speed of 140 km / h, the clearance will automatically decrease to 15 cm, and at 70 km / h the level will be restored.

Diagnostics and prevention will prevent many problems from occurring, and timely replacement of faulty elements of this system will allow you to drive on any route absolutely calmly. Minor repairs can be performed on your own, but if you are faced with more serious problems, then it is better to trust the professionals - the Mercedes W220 deserves it.

X Do you still think that car diagnostics is difficult?

If you are reading these lines, then you have an interest in doing something yourself in the car and really savebecause you already know that:

• STO lomat big money for simple computer diagnostics
• To find out the error, you need to go to the specialists
• Simple wrenches work in the services, but you can't find a good specialist

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We have tested this scanner ourselves on different machines. and it showed excellent results, now we recommend it to EVERYONE! So that you do not fall for the Chinese counterfeit, we publish here a link to the official website of the AutoScanner.

Hello everyone!

On w221, the air suspension is installed as standard on all models, without exception. The system consists of a compressor, a valve block and 4 pneumatic struts in which there is also a part filled with oil. Most often, the mechanical part, filled with this very oil, dies and the shock absorber knocks.

I noticed that the car has been rising somehow slowly for a long time. And, in about 1.5 days, it drops if the car is stationary.

By the way, many people think that kakraul (!) Is so bad. But the dealer told me right away that all the Mercedes are lowered. Some are slower and some are faster. At the same time, if after starting the engine the suspension returns (rises) to its normal position, then, they say, "This is normal. Absolutely normal."))

And then, one fine day, she did not rise. Well, okay, I thought, and parked the car and drove a Porsche. But, damn it, it began to get colder and tired of stumbling about a Mercedes (gyyy), I decided that the time had come!

The price of a new compressor for Avito is on average 28 thousand. It changes quite easily. Will be replaced at any service in 30 minutes. Well, or you can change it yourself in the same time if you have the desire and the tool. And many will say fuuu ... myself .... But! Do not forget that when w221 lies down on the belly, you cannot move on it and you need a tow truck! And this same tow truck can not always come to the place where the suspension died. I know a case when people changed the compressor right in the courtyard of a residential building, since the tow truck could not squeeze through 5 dozen cars parked on the curbs. Therefore, all w221 owners will find it useful to read this video.

I have a Mercedes diagnostic computer SD-Connect, which immediately told me that the compressor was not working, and the diagnostic test showed that it did not create any pressure.

By the way, the same Avito is full of ads from services that offer to change your deceased compressor for a restored one from 12-16 thousand rubles. And so, a person from the very first service where I called (to evacuate cars to them) named Valery (God bless him) told me: - Check the fuse. (!)

If you open the hood, then the box with fuses and relays is located on the right side of windshield... It has 4 screws. We shoot and (sorry I didn't take a photo) in the case of my S350, the desired fuse is located on the edge of the akurat closest to the radiator grill in the middle. The 40A fuse is orange and very large. Located between two fuses of the same size, but different in color.

The dealer costs 218 rubles.

And yes, pneuma came to life !!

But the fuses just don't burn. Moreover, such amperage. It means that something wrong in the motor itself starts to happen. This can happen if the motor was very hard .... And why can it be hard for him? And then (and 99% of owners do not even know about it at all) I remembered the existence of the air suspension compressor filter. The filter is clogged, the motor is spinning, little air comes in, it works longer than usual, strains, strains, heats up, starts to consume more current than it should be and the fuse breaks. Is this option realistic? More than!

I must say right away that there is also a relay in the same box. In 90% of cases, it sticks, which leads to constant and non-stop compressor operation. And then there will be either bang (and you will hear it, and it's good if you are wearing a diaper) with the replacement of the valve block or the same fuse to begin with.

The dealer's filter cost 882 rubles.

Looks like that

In the nearest service it was changed for me within 15 minutes while I went for coffee. Issue price 1000 rubles. It is located in the same place as the compressor. It is more convenient to remove the front lower bumper protection on the lift, and on the ground - the front right wheel and wheel arch liner.

After the replacement, the machine began to rise noticeably faster, and the compressor intervals became shorter.

I was not lazy and took the old filter home and, having cut it with an engraver, looked inside.

Dealer Parts:

It took me 15 minutes to write this report, while I am sure that it will save tens of thousands of rubles for more than one owner who will certainly read it. Do not forget to share useful and interesting articles. Do good!))

Thank you for the inconvenience!))

Rear axle auxiliary air suspension kit for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35, four-wheel drive, 4x4, is installed in addition to the standard leaf spring suspension of the car and allows to reduce the load on the springs, increase the comfort of the car and improve cargo characteristics car. Installation of air suspension will allow Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 to carry more cargo without loss of controllability, relieve springs sagging and breakage, reduce body swing and roll. Air suspension for Mercedes Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is an excellent solution for extending the service life of the standard leaf spring suspension.

Installation of the auxiliary air suspension does not require special skills and takes an average of 4 hours. Install the auxiliary air suspension kit for Mercedes Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is possible: in our workshop, in any car service, as well as with your own hands.

Features of air springs for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35:

• Reduced wear of springs and shock absorbers (standard springs on your car will last longer, because the air suspension will reduce the load on them, as well as on other suspension elements)
• Elimination of noise and vibration of the suspension and bump stops during overload (air suspension completely eliminates the situation when a commercial vehicle lies on the bumpers)
• The ability to install air suspension on tired springs (after installing the air suspension, the springs requiring replacement will last a long time)
• Correct position of the body under any load (always horizontal position of the body of a commercial vehicle, regardless of the load, and this is the correct operation of the head light and a decrease in braking distance)
• Reducing the roll and rocking of the car (the air suspension does not allow the car to roll over the overloaded side, and is always in a horizontal position)
• Increase in comfort for the driver and passengers (a significant increase in comfort when driving cars on bad and uneven roads, both for the driver and for passengers (on passenger minibuses)
• Increase in profit from transportation (air suspension - air spring is the ability to transport 1.5 times more cargo per 1 trip + savings on replacement of springs and traffic fines for overload
• The ability to control the overhang of the vehicle during loading and unloading (adjustment of the rear clearance to level the floor of the booth of a commercial vehicle with the level of the ramp floor for convenient loading)
• High service life of the air suspension (the air suspension does not require any additional maintenance, and effectively works for 5-6 years under any operating conditions, be it frost, dirt, salts and reagents. Working pressure up to 8 atmospheres)
• Increase in comfort and softness possible
• The "Goat" effect is removed

Additional air suspension control options:

• It is possible to install a control system with adjustment from the passenger compartment
• The system can be installed on 1 circuit (total cushion pressure)
• Two circuits (different pressure in the pillows, reduces swing and allows independent alignment of the left and right sides)
• Possibility to additionally install a receiver for compressed air to increase the speed of operation (pumping) of the air suspension, as well as add the ability to connect pneumatic devices, for example, pumping wheels or pneumatic signal

Air suspension delivery set for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35

Air suspension kit specially designed for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 and includes two pneumatic elements, brackets for attachment to the frame and axle, fasteners, accessories for pumping from an external compressor, instructions for DIY installation.

The kit includes:

• American Pneumatic elements (air springs) of the bellows type, which are optimally matched to the dimensions for the given vehicle. They do not require any maintenance due to a reliable rubber cord construction and serves more than 400 thousand in vehicle mileage in any road conditions
• fasteners of our own factory production from 6mm Russian steel, specially designed for this vehicle. These brackets are reliable, easy to install and will last a long time. The brackets are powder coated, which protects them from rust for the entire service life
• a set of Russian bolts, washers and nuts for assembling the kit
• air fittings and pneumatic line from Camozzi, the kit includes 7 meters of air hose, which allows you to bring the pump nipple to any part of the car
• nipple for lowering and pumping with any external AirLift compressor
• installation instructions
• all equipment has been tested in various conditions, which gives us confidence in the reliability and durability of this air suspension kit. The kit is delivered completely disassembled with step by step instructions on installation. Unlike competitors, we do not hide what the kits are made of and give the client the opportunity to familiarize themselves with all the fasteners during installation to make sure that they are reliable and easy to install.

Installation of pneumatic kit:

Air suspension kit for Mercedes Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is installed in addition to the standard springs and does not make changes to the standard suspension elements. Therefore, this kit does not require changes to the vehicle title. Air spring for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is placed between the frame and the springs on the special mounting plates included in the kit. The upper mounting plate is placed on the frame in the standard holes. The bottom mounting plate is placed on the bridge.

The principle of air suspension operation:

When filling the pneumatic bellows with compressed air, the load is redistributed from the springs to the pneumatic elements. Further, when the car is moving along irregularities, the air in the pneumatic air bags is compressed even more, which will compensate for vibrations and swinging. Suspension behavior can be changed depending on the pressure in the air bags.

Recommendations for installing system components and maintenance periods:

• When installing the equipment, make sure that the suspension parts, brake system and other elements of the car will not damage the pneumatic elements and supply lines
• After assembly, check the system for air leaks (using soapy water)
• Re-test for leaks 100 km after installation

Attention! The minimum operating pressure in the cushions is 1 bar! Periodic cleaning of pneumatic elements significantly reduces the likelihood of their failure from adhering abrasives (sand, stones, dirt). The error in measurements of the air bag is not more than 5%. If the pressure is exceeded over 8 bar, the parameters of the diameter and height will not change (cushion without load). In the course of long-term operation, the parameters of the outer diameter of the pillow may increase by 10%.

The technical parameters of the product, as well as illustrations, are for informational purposes only. The manufacturer of the product reserves the right to deviate from the declared parameters without prior notice.

Air Leak Kit Diagnostics (Diagnostic Areas and Leak Corrective Actions):

With the correct assembly of the air suspension kit, the permissible pressure drop from the air bellows is 1 bar within 72 hours (GOST provision)

If the system pressure drops by large values \u200b\u200bor for shorter periods, it is worth diagnosing leaks of threaded connections, the connection of the air tube on the pressure gauge (if any), as well as the tightness of the air bags themselves.

Leak diagnostic tool - soapy water. If a leak is found, eliminate it by tightening the threaded connection with minimal effort, or disassemble and assemble the assembly using a sealing material (FUM tape, thread, thread sealant).

"Mercedes Vito" is a very popular minivan in Russia. This car is in demand primarily for its powerful and reliable engines, as well as a comfortable suspension. By default, Vito is fitted with coil springs at the front and rear. As an option, the manufacturer could complete the minivan with an air suspension. But there are very few such modifications in Russia. Most of them already have suspension problems. But what if you want to get a minivan on pneuma, which initially came with clamps? There is only one way out. This is a Mercedes Vito. It is possible to do this with your own hands. What does the air suspension do, how does it work, and what feedback does it get? Read about all this and not only in our today's article.

Characteristic

So what is pneuma? This is a type of suspension that involves the presence of air cylinders.

They are elastic elements in the chassis and allow you to change the ground clearance depending on the volume of filled air. Cylinders are installed instead of springs, and in our case, coil springs.

Why is she so popular?

First of all, such a suspension is popular due to its energy intensity. There are many opinions about this, but no matter how many levers are used in the chassis, air cylinders absorb impacts softer than springs (and there is no need to talk about springs). What are the other advantages of such a system? If it is a cargo "Vito", the installation of such a suspension will increase the carrying capacity of the machine. So, when fully loaded, the car will not sag as before.

Design

The main component of any pneuma is air cylinders. Their other name is pneumatic springs. It is these parts that play the role of elastic elements in the suspension. The cylinders take on the entire shock load. In addition, the car body itself is held on them. These air springs consist of dense multi-layer rubber and are able to withstand enormous pressure. There is a metal spacer on the top and bottom of the pillow, thanks to which the part is attached to the body and the suspension arms. This is a kind of platform for placing air springs. The cylinders themselves are cylindrical in shape, but they can change their height. Due to this, the vehicle's clearance is adjusted.

Compressor. As noted in the reviews, it may not be included in the Vito air suspension kit. The installation of pump nipples is proposed as a budget analogue. What does a compressor give? This element pumps up the cylinders. The unit is connected to the standard vehicle electrical system. Also, the compressor has its own "cut-off". When a certain pressure in the receivers is reached (usually ten atmospheres), it automatically turns off.

What are receivers? These are hollow metal containers that contain compressed air. As noted in the reviews, a five-liter receiver is enough for a Mercedes Vito. It is not too big and it is enough for several cycles of raising and lowering the body. The receiver and the air suspension compressor of the Mercedes Vito can be connected together. Manufacturers often supply ready-made compressors, which have a receiver. It is very comfortable. If you are installing air suspension on a Mercedes Vito with your own hands, you do not need to think about where and how to arrange these elements. It is enough to fix everything in the cabin (for example, under one of the seats).

The air suspension also includes a variety of hoses, fittings, and solenoid valves. The latter allow air to move through the system at the right time. And all this is connected to one control panel. Usually it is fixed near the driver's seat.

What do the owners say?

As noted in the reviews, the Vito air suspension kit should be purchased for several reasons. The first is a smooth ride. With this system, you can make the suspension travel even smoother without changing the rubber profile. The second reason is good handling. No matter how much luggage you carry, the car will be perfectly handled when cornering. The suspension can be made hard and soft - just adjust the pressure in the circuit. The third reason is the ability to adjust the clearance. For some, it helps to overcome snow drifts more easily, while others put on such a suspension to attract attention. On fully deflated pillows and beautiful disks, such a car looks very attractive.

At any time, the machine can be "dropped" on the ground and returned to the transport position. The process of lifting the air springs does not take more than ten seconds. But this applies only to those systems where there is a compressor and a receiver, they say in the reviews. The air suspension kit for Vito with a nipple and without a receiver forces the owner to carry a booster pump with him. Otherwise, there is no way to change the chassis configuration. As they say in the reviews, it is better to take the air suspension kit for Vito with a compressor. Having overpaid for it once, you will not suffer with pumping the system through the nipple, especially in winter.

Varieties

The air suspension is divided into several types. So, there are:

• Single-circuit system. This is the simplest and cheapest suspension scheme. In this case, the two pillows are controlled from a single valve. A single-circuit system is installed only on the rear axle. This is the most popular option among Vito owners. The car will not "goat" on the road when empty, while it is well controlled with a full load.
• Double-circuit. Such a system is installed on both axles of the vehicle. What is the peculiarity of such a scheme? Here it is somewhat different. On Vito, cylinders are placed for each wheel separately. But they are independently controlled in pairs. The driver can raise or lower separately only two front or two rear airbags. The cost of such a system is about 2 times higher than that of the previous one.
• Four-circuit. This is the most complicated and expensive air suspension system on Vito. Its device assumes the presence of a complex control panel with a whole set of solenoid valves. Air supply is carried out directly from the receiver or compressor. But if in the previous case two pillows were inflated at once, then here it is possible to control each air spring individually. The cost of a four-circuit system is 50 percent higher than the previous one. But as noted in the reviews, the air suspension on the Vito of such a plan will be superfluous. A dual-circuit system is sufficient for comfortable control.

The cost

The price of the most budgetary air suspension for Vito is 34 thousand rubles. This is a single-circuit system with nipple pumping, without a receiver and compressor. The kit includes:

• Plastic tubes.
• Fitting.
• Nipple adapters.
• Fittings.
• Air cylinders in the amount of two pieces.
• Rear axle mounting kit.

Additionally, it is proposed to install a compressor with solenoid valves and a receiver. This option costs about 25 thousand rubles. But as noted in the reviews, such a set of air suspension for Vito Mercedes will be the most optimal.

As for the two-circuit system, it will be more expensive by 30 thousand rubles excluding the receiver and compressor. Well, the price of a four-circuit suspension reaches a hundred thousand or more, depending on the brand of cylinders and other components.

Specifications

Below we will consider what air suspension characteristics on Vito have:

• The diameter of the air springs is 11 centimeters.
• The working pressure range is from three to eight atmospheres.
• The minimum allowable pressure is one atmosphere. If you operate the system with deflated cushions, they will quickly become unusable, even if the air springs are made of hard and strong rubber.
• The permissible lifting force is one and a half tons per one pneumatic element at a pressure of 10 atmospheres.

Suspension kit usually comes with a one-year manufacturer's warranty.

How is the air suspension installed on Vito? Process description

This procedure can be done both independently and with the help of the hands of specialists. The main difference between mounting air suspension on Mercedes Benz Vito is that the pillows are the main elastic element, and not an auxiliary one, as on the Sprinter and other commercial vehicles. Here the air spring is installed in place of the factory coil springs. And so that the part fits snugly in the cup, special metal spacers are provided. The reader can see how the finished air suspension on the Mercedes Vito looks in the photo below.

Thus, the cylinders are mounted between the arm and the body side member. It is not worthwhile to additionally strengthen the structure. Everything is installed at the factory. So, first of all, the Mercedes-Benz Vito is placed on a lift or jacked up on a level surface. It is advisable to unscrew the lower shock absorber mount. This is necessary in order to remove the old spring. If it somehow does not give in, a special spring puller should be used. At the next stage, you can start installing the air suspension on the Mercedes Vito. At the top and bottom, the metal spacer is secured with a heavy-duty bolt. It is necessary to strictly align the pillow so that there are no distortions. This is the only way the suspension will work properly on Mercedes-Benz Vito.

Then you can start laying the air lines. Please note that for safety reasons, they must not cross the brake pipes. The lines can be fastened with plastic ties. Then the outputs should be connected to the solenoid valves and the compressor. You also need to lay the wiring to the control panel, which will be in the cabin.

How is the air suspension installed on the Mercedes-Benz Vito next?

Then you need to connect the compressor to the vehicle network. After that, you can start the system. The compressor will pump air into the receiver, after which the cylinders will be filled with oxygen. Depending on whether the solenoid valve is open or closed, we lower or raise the suspension.

Installation without receiver and compressor

When choosing a budget system, you need to decide on the location of the swap nipples. They can be installed anywhere, such as under the passenger seat or at the bottom of the glove compartment. These nipples have the same shape as on a regular wheel. And the pumping will be done through a 12-volt pump powered by a cigarette lighter. The installation algorithm is identical. First, the old springs are removed, then the cylinders are mounted and bolted on both sides. Don't forget about the shock absorber.

We must fix it back, otherwise the buildup will be colossal. After that, the air line is laid to the passenger compartment. Using adapters and a T-shaped fitting, we connect both lines to a common terminal. So we will have a single nipple that simultaneously and evenly pumps two pillows. This completes the installation of the air suspension. You can start operating.

Before lowering the vehicle from a lift or jack, check the tightness of the system. To do this, the cylinders should be pumped up to ten atmospheres and a soap solution should be prepared. Using a brush, apply it to important joints. If bubbles are present, tighten the fittings even more. And so on until such breakdowns are completely absent in the system.

Service

In order for the new suspension to last as long as possible, it needs periodic maintenance. On the eve of winter, it is recommended to wash off the dirt from the cylinders and treat the rubber with silicone grease. So the material will not be so hard at minus temperatures and will not collapse from friction with itself.

It is the dirt that causes the etching of the pillows. It works like an abrasive, producing small damages, cracks and tears. Over time, they grow into holes through which air seeps out under pressure.

Conclusion

So, we have found out what air suspension is and what are the advantages of installing it on a Mercedes Vito. As you can see, this is a very useful acquisition. But you need to choose the right system. Do not overpay when buying a four-circuit system for one hundred thousand. But you also don't need to save too much, otherwise one day you will simply get tired of pumping up the cylinders through the nipple. The best option is a single-circuit system with a complete set, which includes cylinders, valves, a receiver and a compressor.