The most necessary things that every motorist should have are a jack, wires for lighting, a cable and a balloon. Fortunately, now all this can be bought at any auto shop. We are not looking for simple ways and will talk about how to make a homemade jack for a car.

Types of jacks and their features

First of all, I would like to draw your attention to the fact that there are several actual designs of jacks. The most popular are hydraulic, rolling and mechanical. Each type has its own advantages and disadvantages.

Mechanical jacks are very reliable, but most models are not designed for heavy loads. Hydraulics lift large masses, but very often oil leaks from under the gaskets at the seals. As for pneumatic, this is one of the best options. Making a homemade car jack is not so difficult, let's see how exactly. Let's start with the simplest.

One of the most popular types of vehicle lifts is the roll-on type. It is called so not because it can be transported on wheels from one corner of the garage to another. The principle of operation is that while lifting the car, the jack moves under the car. This happens due to the displacement of the lever in relation to the fulcrum.

As a basis for the upper and lower arms, a channel can be taken, as well as a pair of corners. It is worth paying attention to the fact that the jack itself can be hydraulic or pneumatic. The first option is more lifting, the second is less problematic in terms of maintenance. The displacement of the rolling jack is possible if there are two pairs of wheels, and this is the main condition.

On the advantages and disadvantages of the design

This drawing of a home-made rolling jack shows that in terms of the necessary tool and material, the design is quite expensive. Unless, of course, you have half the material in the garage that is there as junk.

From the material you will need a channel with 4.5 mm walls and 7.5 mm thick shelves. You also need a welding machine and an old bottle hydraulic or conventional pneumatic jack. Do not make the levers too long, 400-500 mm each. But if it was done that way, you should think about making an additional emphasis. The advantage of such a jack is that it is convenient to use. But at the same time, carrying it with you in the trunk is not the best solution. Best used as a stationary "garage" tool.

Hydraulic homemade jack

This is one of the simplest, but at the same time effective designs. For manufacturing, you will need a support platform. Its strength and rigidity should be as high as possible. This can be achieved with the help of additional stiffeners.

An important stage is the supporting structure, which is made of a profiled square tube. It is desirable that its thickness be at least 10 mm. We use an old bottle-type hydraulic jack as a basis. It is worth paying attention that even in this case, you will need a lot of metal profile, welding, as well as effort.

With a responsible approach to work, you will receive a high-quality and reliable design. Nevertheless, it is worth calculating the costs in advance. If the amount is more than 2,000 rubles, then it hardly makes sense to bother with this matter.

Buy or do?

Of course, you can make a homemade car jack. But this is worth doing if this procedure is appropriate. Now there is a huge selection of jacks in stores at an affordable cost. For example, for 1,500 rubles you can get a solid diamond jack. It is reliable, stable and does not take up much space, which makes it easy to transport.

For 2,500-3,000 rubles, good quality rolling jacks are sold. They have good carrying capacity and are reliable, although they are extremely bulky and heavy. You can make a rolling jack with your own hands. But this will require a lot of tools and material, which will ultimately result in serious costs.

A homemade car jack made by you personally will also have its advantages. If you approach the matter competently, then the output will be a reliable design, the resource of which will be clearly higher than the purchased device. But it's easy to make a mistake here. For example, some welds, especially on the bend of the lever, can burst, and this, in turn, will lead to sad consequences. In any case, it's up to you. The drawings presented in this article will help you in making a jack on your own. But it can take a whole day off and a lot of nerves and materials. But if there is a tool, and there is a lot of metal in the garage, then it is definitely worth a try. Especially since you know how to make a jack with your own hands.

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Reliable homemade jack

• Design and features
• Main characteristics
• Summarizing

The problem of lifting loads of large masses in front of mankind has been standing for a long time. In recent years, jacks have been increasingly used to solve it. The hydraulic jack stands apart in this row. He is able to lift really heavy loads with a minimum of effort. Hydraulics, since the advent of science, has come to the aid of man. There are situations when a lift of this kind is simply necessary, but there is no way to purchase it. How to make a homemade jack?

Scheme of a rolling hydraulic jack.

Design and features

Of course, before starting work directly, it is imperative to learn more about the design of the hydraulic jack. In fact, it is not so complicated as it might seem at first glance. The main elements are the body, pump, plunger, screw with lifting heel. The hydraulic jack is most often made of hardened steel. In this case, a special oil with high viscosity indicators acts as a working fluid. Conventional motor oil will not work in this situation.

Hydraulic jack device.

It is worth considering this when developing a device. Usually it is the body that is the main part of the hydraulic jack. It serves not only as a reservoir for the working fluid, but also as a real cylinder for the piston. The device of this design implies the presence of protective valves that ensure uninterrupted operation. It is equipped with a hand or foot pump.

The oil is drained using a special handle, which is part of the mechanism. At the same time, the lifting mechanism and a special retractable hydraulic cylinder are able to raise the working platform. A sufficiently high pressure is created, which allows you to lift loads of various masses. The body of such a device can be both short and elongated. The second option is most often used when carrying out repair work on heavy equipment. For example, it can be a bus or a heavy vehicle.

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Main characteristics

Screw jack device.

There are many options that allow you to use hydraulic jacks everywhere. They are unpretentious in terms of carrying capacity. An important point is the presence of a practically incompressible working material. It's about hydraulic oil. From this we can conclude that smooth running cannot be avoided in the work, that is, raising and lowering. At the same time, the load can be fixed at almost any height. It is worth noting that such devices have a fairly high efficiency, which is equal to 80%. At the same time, the lifting capacity of the mechanism can reach 200 tons. Of course, such powerful aggregates will not be considered in this paper, but the reader should be aware that they exist.

It is necessary to note the initial height of the rise. This indicator is better than that of ordinary mechanical models. Loads can be lifted from almost zero height. This is very convenient, especially when it comes to repair work with low-slung cars.

The device is a simple homemade jack.

There are, of course, disadvantages to hydraulic jacks. The main one is that it is very difficult to adjust the lowering height in such mechanisms. In order for the device to be constantly in working condition, it has to be checked. Here it is necessary to monitor the oil level, the condition of the valves, gaskets and seals. If necessary, these elements must be replaced. Sometimes it can be difficult to transport jacks. They must be stored and transported only in an upright position.

Otherwise, it is likely that all the liquid from the tank will simply leak out. Another disadvantage is the relatively large mass of the device. It is not always easy to transport it from place to place. The cost also makes many think about alternative solutions to the problem. Some people buy mechanical jacks because they are several times cheaper, while others make their own hydraulic jacks.

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Hydraulic press manufacturing

Hydraulic press device.

The hydraulic jack itself is not that interesting, since it is quite simple, but the press can be useful for every person who loves cars. It will serve as a real garage helper. With it, you can press bushings, punch holes in various metal blanks. A hydraulic jack will be used to create pressure in the structure. To work, you will need a grinder, a welding machine with a certain number of electrodes and an angle grinder.

The first node in this design will be the support platform for the jack. Since you will have to work with quite impressive weights, you need to make the platform as reliable and powerful as possible. Do not forget about this nuance. It is quite difficult to achieve the desired result. To do this, you need to apply several stiffeners at once. Only in this way will the design be truly of the highest quality and reliable.

For work, you can use both a square and a rectangular profile.

Drawing pneumohydraulic rolling jack.

Here the choice depends directly on the capabilities of a person and on what he has at hand. Further, these parts of the structure are laid base to each other. In this case, it is worth making as many welds as possible. This will achieve the required rigidity. You need to weld the elements to each other both from below and from above. In order for the design to be stable, it is necessary to additionally use a metal plate for the stand, the thickness of which will be at least 10 mm.

Next, you need to make emphasis and racks. To do this, you first need to prepare a profiled pipe, the cross section of which will be square or round. To calculate the height, you will have to add several values ​​\u200b\u200btogether. It is necessary to add to the height of the jack the value of the working stroke of the rod, as well as the height of the platform. The resulting number will be the result.

The emphasis must be made of the same metal from which the racks are made. Then all the elements are connected to each other. The result is a U-shaped design. In order to ensure the perpendicularity of all structural elements, it is necessary to make a very simple fixture. On a steel plate, the thickness of which will be at least 10 mm, it is worth laying two corners at an angle of 90 °. Then all these elements are welded together. Everything is quite simple, but at the same time the design turns out to be really as reliable as possible.

The load capacity of the screw jack is calculated by the formula.

In order to further make it more convenient to work, this device should be equipped with special clamping mechanisms. This will fix the resulting triangle and avoid further displacement along the axes.

The next stage of work is the creation of a special stop that will move along the guides, transferring pressure from the hydraulic jack directly to the workpiece. To work, you will need to use a special metal piece. Its thickness should not be less than 1 cm. The length of this part should be slightly less than the distance between the uprights.

It should be noted that the components of the stop are interconnected by welding. In this case, you should not save on electrodes. Only a good connection of all structural elements will make it possible to make a really high-quality design. Now you can proceed to the installation of the hydraulic jack itself. It is fastened with two bolts of the same length.

It is worth making it as strong and rigid as possible. If it is necessary during the execution of work to reduce the working stroke of the hydraulic jack rod, then it will be necessary to make the distance between the stop and the steel part of the structure, that is, its beam, smaller. For this, an additional metal plate of the corresponding profile is used.

In order to make this distance less impressive, you can use additional removable inserts. They should be additionally marked in order to make the fastest possible tool change during the work.

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Summarizing

So, the above revealed the advantages of hydraulic jacks. As you know, this device can be used not only for its intended purpose. For a garage-type press, it is quite appropriate. A hydraulic jack in this case becomes one of the best options for creating such a press. Of course, this is not the only such case of non-standard use of a hydraulic jack in practice. The hydraulic jack itself is extremely simple to make.

Knowing the design of this device, you can experiment with its designs. This is a great solution for every car enthusiast. The hydraulic body is made of hardened steel. Do not forget about high-quality materials for the piston itself. He will have to transfer the maximum load. Only hydraulic oil should be used as the working fluid. It has high viscosity.

Only such oil is capable of creating high pressure in the working mechanism. Knowledge will allow everyone to make a hydraulic jack and a press with their own hands.

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Do-it-yourself rolling jack

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Homemade rolling jack

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Homemade garage fixtures
Homemade rolling jack. light version.

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Universal lifting and transport device:
Unique properties:
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What is it used for and what problems does it solve:
1. This is a simple and versatile tool for lifting heavy loads.
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3. Using a crowbar, you can lift the load to a height of up to 145 mm
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Where applied:
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Making a homemade comfortable car jack from improvised materials is very simple! in the video a short overview, if you are interested in something about this invention, ask questions. and offers!

Good afternoon everyone. I have a diamond jack, I lost the handle from it, it was made in the form of a hook. Lifting a car with such a jack without a handle is not very convenient. In two or three stores I asked about a pen, they didn’t have one, it was decided to come up with something else. Therefore, it was decided to modernize this jack, so to speak. Moreover, it is already necessary to put summer wheels, winter has passed.

So, we take the grinder and carefully saw off this ear, where it was necessary to put the hook-handle in order for the jack to spin.

Here I sawed off the ear.

Now we need to find, or rather pick up the head, which we will weld instead of our ear. So I picked up such a head from myself, you don’t need to do anything extra with it, you just need to weld it well.

Now we take the welding machine and weld the head.

It turns out like this.

After welding, I turned this place a little, I did not turn it too much, so that a little iron remained for hardness.

With such a head, it is easy to turn the jack and raise the car, it is especially convenient to turn it with a ratchet.

Yesterday I tried the jack in action, changed all four wheels, put on summer tires, it became just convenient and easy to work with the jack.

Well, that's all, if this article helps anyone, I will be very happy. The idea was spied on by Alexei from Tambov.

The main function of the jack is to raise the wheel of the car in order to replace it or tire. The jack is used for independent replacement of car wheels in the absence of repair services. Also, sometimes you have to get under the bottom of the car in order to carry out repair work. A jack will come in handy in this case too.

Outside of automotive topics, jacks are often used to set structures to the required level during construction and repair work, when lifting goods in warehouses and spare parts in workshops.

You can read about how the crosspiece is replaced in the detailed material of our author.

You may also be interested in information on how to choose and securely fasten with your own hands.

The important characteristics of the jack are listed below.

1. load capacity. Each of the jacks has limitations on this parameter. When manufacturing the device, the weight of the vehicle must be taken into account. It is also necessary to take into account the weight of the cargo in the luggage compartment.
2. lifting height. This parameter is especially important for cars with a low bottom. In this case, the lifting height must be acceptable to be able to get under the car and carry out repairs.
3. pickup height. This is the height of the tool. This setting must be compatible with the vehicle's ground clearance (distance from the ground to the lowest point). This setting is different for each individual model. It is necessary to choose the height of the pickup so that it is comfortable to work.

Jacks are of various types according to the type of drive.

1. mechanical type, in which the rise occurs by pressing the handle. These jacks are designed for infrequent use. Such devices are compact, but require physical effort.
2. hydraulic type. Similar to the previous one, but requires less effort. The wheel rises due to the pressure created by the working fluid. Great for frequent use.
3. Pneumatic type. The device works at the expense of compressed gases. Gas cylinders are required for use. The gas creates pressure, the chamber increases in size, and the car begins to rise. No physical effort is required.

You will find detailed information on how to make it yourself in the material of our specialist.

Our expert will tell you in detail how to make a worker with your own hands step by step.

You can read information about making your own hands in the article of our specialist.

According to the principle of operation, jacks are divided into screw, rack, pneumatic and hydraulic. Jacks are stationary, mobile and portable. Homemade devices are most often portable, as they are small in size. Stationary jacks are designed for large loads, and are rarely of interest to car owners.

How to make a car jack with your own hands?

DIY hydraulic jack

Hydraulic jacks should be given special attention, as they have the highest carrying capacity, which is important when working with trucks or SUVs. It is possible to manufacture hydraulic jacks with different sizes and characteristics. Modern mechanisms are used not only in service stations and car repair shops, but even in the oil refining industry. The device can operate in both horizontal and vertical planes.

The main bearing elements of the device: the body, the working fluid (most often oil acts as its role) and the retractable piston. The body is short and elongated. At the same time, it is made of hardened steel so that the structure can withstand the required level of loads. The housing has the function of a guide cylinder for the piston and a reservoir for the working fluid.

The lifting device and the retractable cylinder are located in the openings of the housing. The descent is carried out by turning the T-shaped handle. The equipment is equipped with polyamide wheels that provide maneuverability. The body of the elongated type is designed for heavy vehicles.

Hydraulic lifting mechanisms are the most common and convenient, so let's start with them. The manufacture of a hydraulic jack is as follows. You will need a welding machine, a hacksaw, an angle grinder with a disc for metal, a steel profile for the structure.

Hydraulic jacks come in standard, rolling, bottle, hybrid, toe and rhombus jacks. The manufacturing process of a conventional hydraulic jack is described in detail below. There are many drawings on the network according to which these mechanisms are assembled.

1. First, a support platform for the mechanism is created. A steel rectangular profile measuring 50 by 50 millimeters is suitable. From the profile it is necessary to cut 4 parts with a length of 300 millimeters. Lay these done with side walls to each other and weld the joining seams from below and from above.
2. Make racks and stops. Saw off 2 pieces from the profiled pipe. The length of the parts is calculated relative to the maximum stroke of the rod, then the height of the jack and the support platform are added to this. The stop is made from the same material. Its length is equal to the width of the support platform. The stop and racks are connected by a weld, a U-shaped structure is welded to the base.
3. Production of a removable stop capable of moving along the guides and imparting pressure to the workpiece. It is made from several pieces of steel strip centimeter thick. The length of the parts must be less than the distance formed between the racks. The resulting parts are connected in several places by welding. During the installation of the block on the frame of the press from the hydraulic jack, it is necessary to pick up 2 bolts with washers and nuts and connect the resulting plates to the block in such a way that they will be placed on both sides of the racks. If necessary, you can reduce the distance between the moving stop and the upper beam of the structure when installing an intermediate square profile.

When manufacturing a rack jack, it is important to take into account that the stability of this design is affected by the strength of fixation and the quality of the support platform. It is important to assemble the mechanism in such a way that the product does not move out during operation. The force that is applied when lifting loads depends on the maximum possible mass.

The manufacturing process of a rack jack is quite simple. It is necessary to take 2 rack pipes and a welding machine. Pipes must be welded in such a way that they look like a truncated pyramid. Next, a steel sheet with a thickness of 5 millimeters is taken. The upper and lower base of the mechanism is made. A hole is made in the upper part, in which the nut must subsequently be welded. A hole is also made in the bottom base. Next, a mechanical bar is inserted there for rotation.

For the manufacture of the mechanism, it is better to use hardened steel parts. If you additionally attach a metal cable, then the rack jack, if necessary, can replace the winch. The average carrying capacity of such a product will be from 5 to 20 tons.

Do-it-yourself rolling jack

A rolling jack is easy to make, based on a bottle assembly with a pickup height of about 23 centimeters and a channel of 10 and 12 millimeters. The bottle jack is the simplest mechanism of this kind. Despite this, it is used to repair trucks. The principle of operation of the jack is based on the use of several working rods. The mechanism is based on a piston.

Lifting occurs with the help of a lever, which is driven by a hydraulic cylinder. From a channel of 12 millimeters a rack is created, from a ten-millimeter one - a lifting arm and a base. Rollers from a conventional washing machine are installed in front. The cup is taken from a car bump, and the braces are created from a 20 mm bar.

As a result, the rolling jack is similar in principle to the bottle jack, however, the axis of the working cylinder in this mechanism is located in the horizontal axis. The piston is not directly aligned with the pickup. The name "rolling" this mechanism was due to the fact that outwardly it resembles a cart on wheels rolling on a flat surface.

When lifting the lever, the jack moves under the load (car). The mechanism is set in motion by touching the lever, lowered by turning the valve screw. If the car needs to be lowered, the tubular handle is mounted on the valve screw. The partition then enters its groove. The screw rotates with the handle, relieving pressure in the working cylinder.

The screw jack consists of: base, lower and upper arms, stop and screw mechanism. A metal base (range) is taken, having a cross-sectional area of ​​\u200b\u200b2.63 cm square. 4 through holes are drilled, with a diameter similar to the diameter of the pin. It is desirable to attach the base to a wider removable platform. Next, the upper and lower shoulders are made from a metal base.

The shaft is made of a metal bar. The diameter of the rod is 12 mm. There should be a thread on one end, and a latch on the other, attached to the shaft with a pin through a through hole. An axis is made, relative to which the arms rotate. The axles on both sides are pins with flat cylindrical heads, fastened with cotter pins. A through hole with a diameter of 10 millimeters is drilled in one of the stops, an internal thread is made in the second. The latch acts as a shaft fixing on the rotation side and transmits torque to the shaft.

The screw jack can be made in three different variations: with trapezoidal thread, diamond-shaped, lever-screw.

You can read more detailed information about the positive and negative sides in the article of our author.

It is relatively easy to make a do-it-yourself airbag jack, given that this type of unit is a very interesting device. Pneumatic jacks are indispensable when it comes to precise installation. When working on uneven or loose surfaces, such a lifting mechanism is indispensable. A rubber-cord flat shell made of reinforced fabric is the basis of the device. The shell expands when compressed air is supplied. The device is also quite complex in terms of design.

So, for the manufacture of the mechanism, the following materials will be needed: an old pillow from a truck, a bolt, a ball that can act as a bearing, a wheel bolt from a VAZ, a chamber fitting and a drill.

A bolt must be screwed into the hole in the pillow. Before that, you need to drill a hole in the bolt, which will be occupied by the fitting. It is also necessary to make a hole in the wheel bolt from the VAZ. It will act as a valve. The elements are connected. A ball is placed in the existing outlet, which closes the passage of air during operation. A pump is required to use the device. The jack will be located under the bottom of the car. You will also need a wooden block resting on the car.

Do-it-yourself electric jack

It is easy to make a homemade car jack for a car with your own hands when it comes to mechanical devices that work on the physical efforts of users, compressed air and working fluid. Making a do-it-yourself electric jack is somewhat more difficult.

Electric lifting mechanisms are the result of the synthesis of mechanical moving components and an electric drive. The power supply of such a jack can be carried out from the power supply of the car. You can connect the device through the "cigarette lighter".

The starting materials for manufacturing can be different. Motors for power windows are suitable (as an example, you can take a motor from the “tens”). The drive and cables must be removed, leaving only the motor and gearbox. You will need a head, in which the tetrahedral side is equipped with edges of 7 millimeters. An ordinary screw rhombus jack can act as a basis.

Our task is to create an electric drive so as not to make any effort when using it. Fastenings are made of steel strips. The fasteners must be cut and shaped to the desired configuration, and then attached to the gearbox. The mount and head on the gearbox are welded to the device. The device can be controlled using a button from the power window mechanism.

Device Comparison

Trapezoidal screw jacks with high load capacity retain their simplicity of design, light weight and ease of operation. The rhombic design of such mechanisms is distinguished by the presence of a long drive handle, which reduces the required effort to lift the load. Also, the design is lightweight and has good stability.

1. Lever-screw lifting mechanisms are distinguished by large lifting heights and small dimensions.
2. Rack and screw jacks have high stability and rigidity.
3. Rack type structures are characterized by the possibility of using in different directions and ease of operation, as well as a high rate of lifting force.
4. Bottle hydraulic jacks have the simplest design and high rigidity of the connection during operation. Lifting effort is minimal.
5. Rolling jacks are stable, have a small initial installation height and considerable rigidity during operation.
6. Electric jacks perform best in extreme conditions, do not require physical effort and have high accuracy and stability.
7. Pneumatic lifting mechanisms provide convenience and reliability of use due to large supporting surfaces. They are also distinguished by noiselessness and good speed, high efficiency and unpretentiousness.
(6 ratings, average: 5,00 out of 5)

Jacks are usually used in the process of car repair, although such a device is also indispensable in the construction of bridges, as well as laying power lines. In order for such equipment to be as efficient as possible, a rack model should be preferred. With basic knowledge and experience, you can do it yourself.

Types and principle of operation

All rack and pinion jacks can be electric or manually operated. Despite this difference, the principle of operation of the device is preserved. So, there is an interaction of the ratchet mechanism with the rail. The body is lifted and moved along the rail. There is a support and a lever. There is also a mechanical casing that protects all parts from possible contamination.

rack models are divided into two groups:

• gear - a handle with gears is provided here;
• lever - such jacks are driven by a lever.

The simplest equipment lifts a weight not exceeding 8 tons. There are special models on sale that are designed to perform various construction work. Due to their complex design, they are able to withstand a weight of about 10 tons. This figure for single-stage varieties is 15 tons, and for three-stage ones - 20 tons. Moreover, it will be possible to move the load horizontally and vertically.

The tool works when a certain force is applied to the corresponding mechanism. If necessary, it is even possible to lift the load directly from the ground. This is facilitated by low pickup.

The main disadvantage of all rack jacks is their impressive dimensions. So, equipment designed to work with loads of 5 tons, have a weight of about 40 kg. Accordingly, it is not always convenient to use them at home.

Important technical specifications

To purchase or make a reliable jack with your own hands, it is worth take into account several key parameters. They affect the efficiency and safety of the performance of various works.

Self-made jack

Almost everyone can make a jack with their own hands with the appropriate experience and all the necessary details. It is worth noting that self-assembly in practice always comes out cheaper than buying ready-made equipment. When creating such a device, use different schemes, although overall performance remains the same.

It is worth noting that to create a jack with your own hands, it is better to take parts made of hardened steel. If we talk about the screw, then the best solution would be a product with a trapezoidal thread. A properly made device can be safely use in car repair and construction work. If you connect a metal cable here, then the jack can replace the winch. Such a device will lift a load weighing 5-20 tons.

Features of equipment operation

In order for the jack to be effective, reliable and durable, you need to use it correctly. So, in the process of unfolding, the supporting “heel” is gently pushed inward. Thanks to this, the device will be smooth and stable. Otherwise, it will tilt slightly, which means that the load may move or even fall out.

Once the device is in the desired position, move the switch to the up position, and then pull the lever up so that the “heel” rests on the load. Only after this stage can you start lifting.

When working with a jack, be aware of safety precautions. It is worth being on the left side of the tool and holding the lever with your right hand. It is additionally taken with the left hand, placing the thumb on the side. When doing this, make sure that the fingers do not touch the rails, and the head is not between the lever and the rail. If these recommendations are not followed, injury to the fingers and concussion may occur.

The lever itself is gently rocked up and down. If during operation it seems that the jack is slightly warped, you should reinstall it and start all over again. After lifting the load, the lever is fixed in accordance with the diagram.

It is worth noting that lowering the load is considered a more traumatic procedure, because it is performed very carefully and slowly. Possible damage usually results key exit. To avoid this, it is important to hold the lever firmly until the load touches the ground.

A rack jack is indispensable for every motorist. Such equipment is easy to do with your own hands, using several steel pipes, sheets and fasteners. The finished product must be periodically cleaned of dirt by pouring water from a hose. Such simple care is enough for the correct functioning of the structure.

A jack is a device that should be located both in the trunk of a car and in the garage of a car enthusiast. At the same time, it is better to choose the second option more massive with universal functionality and a high load capacity. These characteristics are 100% do-it-yourself, which will not be difficult to do.

Characteristics of the pneumatic device

There are three main criteria by which a homemade inflatable jack is evaluated:

1. load indicator. To ensure safe operation, this value must exceed the weight of the vehicle. For a passenger car, a characteristic of about two tons will be enough; maintenance of heavier vehicles requires a carrying capacity of at least 2.5 tons.
2. Pickup height. This aspect plays an important role if the car has a small ground clearance. The optimal indicator is a value of at least 100 mm.
3. Lift level. Homemade pneumatic type jack has a height of not more than 500 mm. This reserve is quite enough for changing wheels and some other work, the rigging unit with connection to the compressor allows you to raise the car up to 70-80 cm.

Definitely, when choosing a jack and its manufacture, first of all, you need to focus on your car, the conditions for its operation and storage.

How to make a jack yourself?

To build a jack with your own hands, you will not need much material and effort. You need to select the following items:

• a used pillow from a truck;
• suitable bolt;
• ball element;
• wheel VAZ lock;
• union;
• drill as the main tool.

The structure is assembled from the presented elements. A bolt is screwed into the hole in the pillow. First you need to make a socket for the fitting from the camera.

A wheel bolt from a VAZ is used as a valve, in which a hole is drilled. At the next stage, the existing elements are connected after a ball is installed in the hole, which will serve as an air intake.

Peculiarities

For the practical implementation of this device, a special pump is required. The inflatable jack is installed under the bottom of the vehicle. For safety, it is advisable to use a wooden stand that will interact directly with the machine.

This mechanism has one significant drawback. Since the cargo cushion has a decent size, a low-slung car will have to be raised beforehand to install the device in question. If you attach a cart with wheels to the bottom of such units, you will get home-made ones for cars.

Comparative characteristics

The pneumatic version lifts the load due to the compression force of the air mass. Such modifications work from connection to additional equipment or from the exhaust of the machine. The air mass enters the chamber. Due to compression and increase in volume, the car rises. The advantage of the models is that you do not need to make special efforts, and in the presence of a compressor unit, the process takes a matter of seconds.

A mechanical jack for a car involves bringing it into operation by rotating or twisting a special handle. Such modifications have a low price and compact size.

The principle of hydraulics is similar to the mechanical version. The difference lies in facilitating the process of pumping out the working part of the jack, due to the presence of liquid in the working system. Such modifications have a long service life.

A mechanical jack with an electric drive is powered by mains power, all the main work of the device is performed by electricity. The advantages of the device are undeniable, but you need to connect it to the outlet.

Security measures

Despite the fact that the inflatable jack is one of the most elementary in terms of operation, its use requires certain precautions.

To prevent the unit from flying out from under the car, it must be installed correctly. Before installing a new pneumatic device, it is advisable to deflate it once without load, after which it descends and fits itself accordingly. To protect the jack from damage, it is better to lay a rug on the floor.

For the manufacture of the working chamber of the device, materials based on PVC are suitable. At sub-zero temperatures, this design hardens and becomes rough. According to experts, the optimum operating temperature is up to -10 degrees.

Hydraulic lifting device

It is quite possible to make a hydraulic jack with your own hands. It is based on a body, the main bearing function is performed by a retractable piston and a working fluid (oil). Variations of the fixture can be made with a shortened or elongated steel frame. The housing is a reservoir for oil and a guide cylinder for the piston.

A special adjusting screw with a lifting heel is screwed into the plunger, if necessary, you can increase the maximum lifting height. Such a device is equipped with a manual, foot or air type drive.

The working mechanism and the retractable cylinder are located in the holes of the frame. The unit is lowered by turning the T-handle. Some devices are equipped with polyamide wheels that provide maneuverability. Operational safety is ensured by safety valves.

Positive and negative sides of the hydraulic device

Before you make a jack with your own hands, you should consider all its pros and cons. The advantages of a hydraulic device include the following indicators:

• the device is unpretentious in maintenance and operation at a fairly high power rate;
• smooth running of the working rod, reliable fixation of the load at the desired height, braking accuracy;
• high efficiency (up to 80%) and load capacity (over 150 tons).

The disadvantages of using the hydraulic model include a high initial lifting height, the problem of the accuracy of lowering position control, a decent price and quite a lot of weight. Store and transport the device only vertically, otherwise the working fluid may leak out.

Conclusion

Making a jack with your own hands will not be a particular problem. Depending on the possibilities, the scope of use and other objective circumstances, you should choose the right model for the type of work. For use on the road, a compact device of a mechanical or hydraulic type is suitable, and in the garage an inexpensive and practical pneumatic device will work perfectly.