Rolling jack: repair, specifications, oil change

Every motorist sooner or later faces the need to use such an important car aggregate as a rolling jack. Repairing the machine or replacing the wheels very often can not do without this device. But first you need to figure out what kind of mechanism it is.

A jack is a special device that allows you to lift and fix a heavy weight at a certain height. Each owner of the machine will be able to appreciate its advantages.

The most convenient and effective device is the hydraulic jack, which works thanks to a special hydraulic oil and piston. Such a rolling jack, repair of which is very simple, is useful not only for car repairmen, but for every owner of an iron friend.

The operating principle of a rolling jack

The jack-up jack is considered hydraulic, but has a slightly different structure. It distinguishes it from the other exterior of the case, since it adds two pairs of new wheels. The device is able to gradually lift the car, while it itself is rolled up under it. The jack is podkatnoy (the device and repair can be studied independently) is set in motion by rocking the lever. But to lower it, you need to use a special valve screw, turning it.

There are different types of rolling hydraulic jacks. They are divided according to the weight of the cars that they will have to lift. It can be as cars, weighing up to three tons, and cargo, weighing about twenty tons. In spite of such huge weight indicators, a sub-hydraulic jack performs its work quickly and efficiently.

The main causes of breakdowns

A jack-in jack, which can be repaired at home, can have several causes of breakdowns. The most common of these are: a complete or partial failure of the device to lift heavy loads, as well as the flow of oil. Each of these problems requires immediate repair.

Rolling jack (repair, oil change, characteristics are described in detail in this article) very often fails as a result of oil leakage. In this case, you will have to completely disassemble the device. Be sure to remove the pistons and check for corrosion. Thoroughly clean all components and remove all kinds of dirt. Now check the stem. If you find that it has a twisted and broken shape, you may not even try to perform the repair yourself. In this case, most likely, you will have to purchase a new jack.

Another common cause of the failure of the device is the clogging or breakage of special valves, which, in fact, are responsible for lowering and lifting the mechanism.

Rolling jack: repair of valves

Beginning to repair the oil valve, unscrew it and check for accumulated dirt. Also do not forget to pay attention to the presence of different types of deformations. If you find even the slightest change in the appearance of the valve, immediately replace it with a new one.

If you find a large accumulation of contaminants, then without cleaning the valve, you will begin to notice how the oil flows out. This is due to the fact that the ball is attached to the socket is not very tight.

Flushing Valves

Repair of sub-hydraulic jacks should start with a thorough flushing of the valves. This is done in order to thoroughly clean the device of all accumulated contaminants. Before carrying out this procedure, prepare a special container in advance, in which you will merge the old liquid. While the liquid will merge, be sure to pump the system. Do this by using the working lever by lowering and raising.

After this procedure, which in no case can not be ignored, it is necessary to flush the valves, cleaning the device from the remains of the old working fluid and accumulated contaminants. The repair of a roll-up car jack in-house implies the mandatory replacement of all cuffs and sealing gaskets. If the contaminants have got directly into the working surface, clean it by turning off the head of the housing.

Now fill the tank with a special washing liquid or kerosene and pump through. After you do this, fill the tank with a clean working fluid.

Malfunction resulting from the formation of air bubbles

Very often the jack may start to function poorly for such a reason as the accumulation of air bubbles in the working area. Most often, this phenomenon is observed with a very small amount of oil.

Repair of rolling hydraulic jacks with such a problem can be done at home. To begin with, you'll have to remove the cork in the oil tank, while opening the bypass valve. After this procedure, you should quickly pump the pump of your jack. By the way, you need to do this at a very fast pace. With this procedure, you can transfer the bubbles into the oil tank.

Now that you have done this procedure, do not forget to close the oil tank cap and the bypass valve itself. If you follow all the instructions clearly, your jack will work perfectly, just like after the purchase. If, after this procedure, you can detect air debris, then repeat these steps one more time.

Another way to remove air

The method described above is not the only method for removing air bubbles. This can be done in another way. To do this, unscrew the locking needle two turns. Now lift the plunger by hand, bringing it up to the utmost point. After he is raised, he will return to his lower position. Do this several times.

To ensure that the air does not get into the working surface, do not forget to monitor the oil level and top up it in time.

Choosing and buying a quality jack

If you want to buy a jack-lift 3t, then, despite how expensive your tool is, it will still break down from time to time. Therefore, you just need to read the basic rules of its operation, as well as the basics of repair at home. In order to self-repair, do not forget to buy a special set of wrenches, as well as a special washing liquid and oil.

Choosing a hydraulic jack undercarriage, you need to consider several parameters. If you want to use it at home, then you can buy an assembly that will perfectly fit the weight of your car. Most often it is a 3t jack. If you want to buy a device for work in the workshop, then you need a device with a large load capacity and a high rate of recovery. When buying a jack, it's better not to save, as a quality product will break less often and will last you much longer.

Care instructions

If a rolling jack 2 t does not lift, repair can be carried out and at home. But that this does not happen, you need to conduct timely prevention. Of course, no one says that the device will serve for an infinitely long time, but you can extend its service life several times.

Create good storage conditions for the jack. Keep track of the quantity and quality of the working fluid. In time, clean the device of contamination. Do not forget that the device is not recommended to overload heavily.

How to fill in oil

First, prepare a jack. Check that it is completely omitted. Now find the hole intended for oil filling. Remove the bolt and proceed to the process of filling the barrel. Pour in the oil until it starts to drain. As soon as you find this, stop the process immediately. Complete the process by closing the neck with a stopper.

Helpful hints for use

Immediately before the oil filling process, carefully read the recommendations for the operation of your particular hydraulic jack model. After all, sometimes there are cases when the process of pouring oil slightly differs from that described above.

Before use, it is recommended to get rid of excess air accumulated in the device. Lift the device and lower it to the minimum. So you remove all unnecessary air.

Use only time-tested fluids. Do not use liquids containing alcohol.