How to pour oil into a bottle hydraulic jack

How much oil to pour into the jack

Hydraulic jacks are used for lifting heavy objects, such as cars. It is a standard tool in any auto store. The operation of a hydraulic jack is based on fluid squeezing a cylinder that pulls heavy objects off the ground. You can buy a hydraulic jack and special oil at any auto parts store. Use the tips below to put oil in the hydraulic jack.

The range of uses for a jack is much wider than just using it when changing tires on a car. Any experienced car owner knows when to use this device. But in addition to the rules of operation, it is important to know how to properly perform maintenance and change hydraulic material.

Unlike existing lifting mechanisms the jack is small and light, easy to operate, comfortable and highly reliable. For every car owner, such a tool is a necessary and very important thing.

There are several basic types of jacks:

Can be operated manually and electrically. Some models can support loads up to several hundred tons.

Hydraulic jack

Hydraulic jack. a device that allows you to lift and hold heavy objects at a specified height. The following manipulations can be done with this mechanism:

  • lift and hold the car body in the process of repair work;
  • Raise the span of an axle;
  • to tension the high-voltage wires;
  • transport construction loads and fixtures;
  • piping.

There are single-plunger and double-plunger models. According to the type of construction mechanisms can be:

Why are the hydraulic models considered to be the best of the jack line?? They have significant advantages:

  • high efficiency (80%);
  • Smoothness and quietness;
  • rigidity and sturdiness of design;
  • Brake and stop at a precisely defined location;
  • high load capacity.

But in addition to the pluses, it is necessary to note the disadvantages of the design:

  • Transportation must be done in a strictly vertical position to avoid oil spillage;
  • low speed;
  • Lifting at low heights;
  • Impossibility to set the height when lowering the load.

The capacity range of hydraulic models is from 2 to 200 tons. The bottle design is the most popular model, as it is the easiest to operate.

The jack can only work on a level and hard surface. This mechanism is mounted on wheels, has a rather large lever, which makes it difficult, if necessary, to reduce the force.

Clean oil level and viscosity is essential for long time trouble free operation.

What should be the oil

We use hydraulic oils for filling the jack. As a basis for the product is base oil, obtained in the process of oil refining. An additive is added to this base oil, which provides the required technical characteristics and the absence of foam formation. Generally speaking, there are three types of hydraulic oils: petroleum, synthetic and glycol. A good oil for filling the jack must meet the following requirements:

  • The need for a high viscosity index and temperature indices;
  • The oil must filter well and not create foam during these manipulations;
  • The composition must have high anti-corrosion parameters;
  • Viscosity should not be too high or too low, as this affects the ease with which the machine can move. Try to choose materials with a medium viscosity;
  • Try to choose synthetic options. This oil will not freeze, even in severely cold conditions.

How to refill oil in a hydraulic jack

How to pump the hydraulic jack by yourself?

The question of how to pump a hydraulic jack is asked by many people who have this type of equipment. In order to know how to perform and perform this operation, it is necessary to study the structure of the hydraulic jack and the reasons of the decrease in its effective functioning.

The hydraulic jack is a device that is used in a wide range of tasks. The most widespread are jacks in service stations and car repair shops. These devices allow you to lift a decent amount of weight to the required height.

However, over time, the effectiveness of the equipment decreases, and there are a number of reasons for this.

Before you start pumping hydraulic equipment, you need to determine the causes of deterioration of its operation.

Normal jack operation can be impaired by dirt and air in the tool’s working cavity.

Corrosion, damaging working cylinder surface, may limit jack capabilities. The most common reasons why a jack needs to be pumped are:

  • Remove any air bubbles;
  • Internal corrosion of the device;
  • High load that caused bending of the hydraulic rod;
  • contaminated oil that has been pumped into the jack, causing damage to the mechanism.

In order to get rid of these defects, you should perform a certain list of works in the following sequence:

  • Carefully and completely unscrew the fasteners.
  • Remove the valve responsible for the process of draining the working fluid.
  • Remove the primary piston, inspect its surface for damage.
  • Inspect the equipment to check the condition of the gaskets and balls on the valves and replace them if their condition is unsatisfactory.
  • Clean mechanisms, included in the jack design, of impurities and foreign elements.
  • After reassembling the mechanism, pour in new oil and pump the jack.

Only special types of oil must be used for the proper functioning of the hydraulic mechanism, because otherwise the equipment will not be able to operate at full capacity.

Pumping of the hydraulic system is required in the event of malfunctioning of the equipment. It is also recommended that the jack be pumped regularly to keep the equipment in good working order.

Frequency and frequency of purging and priming depends on how often the equipment is used.

Pumping should be performed almost monthly if the equipment is used very often to ensure stability, but if the equipment is used infrequently, it should be pumped at least 2-3 times per year.

For a jack to last a long time, it is necessary to monitor the presence of oil in it, as well as the condition of the oil seal and the valves.

Oil and flushing fluid are required for priming and flushing of hydraulic equipment. Hydraulic equipment is highly reliable in operation, but even such a mechanism requires regular care and maintenance. Preventive maintenance is required in the following cases:

  • if the capacity rating of the machine has been reduced;
  • when the capacity of the jack is reduced and it is not possible to perform operations that were previously performed without problems;
  • appearance of a large number of air bubbles in the oil of the device;
  • contamination penetration into the device.

Preventive work in accordance with maintenance schedule allows to avoid problems in jack’s work. Regular pumping and deflation of air from the oil helps to return the power to the jack.

Procedure of changing the liquid in the hydraulic jack

In order to perform pumping of the hydraulic jack, you should prepare the following materials and tools:

Hydraulic jack pumping diagram.

Jack filling begins with unscrewing the filling plug and draining the old working fluid. The mechanism is charged with a special flushing fluid. The hydraulic mechanism is flushed to remove impurities. Flush the unit several times to remove all contaminants.

After each flushing, the liquid must be drained into a suitable container. After flushing the jack is filled with oil. The jack is placed as low as possible during filling so as to fill to the maximum level.

While filling with oil, the jack can be easily lowered by turning the special screw into the “drain” position.

After each flushing with functional liquid, the jack is pumped and then the jack is refilled. Fill and flush until the oil has dropped below the maximum mark. Flushing does not require complex manipulation or work.

In order to pump the hydraulic devices, it is necessary to choose the right oil. For example, in the winter period, it is necessary to use a special frost-resistant synthetic oil that meets the technical requirements during the operation of the device in the winter period to the maximum.

Before pumping, you need to learn the technology of pumping and know how to pump hydraulic jacks.

Basic properties of hydraulic oil

The main thing that is required from such oil is to carry out the transmission of power during control, movement and drive. This fluid is an irreplaceable assistant in maintenance of bridges, production mechanisms, locks and various apparatuses that require lubricant.

Hydraulic oil

There are different types of hydraulic oils:

  • oil for industrial equipment and transport;
  • oil for ships;
  • oil for flying vehicles;
  • oil for shock absorber and hydraulic brake systems.

Each type of fluid has its own composition, and therefore there is a classification “A”, “B”, “C”:

  • “A”. mineral oil without additives;
  • “B”. with anti-corrosion and antioxidant additives;
  • “B”. purified oil, which has anti-corrosion, anti-wear and anti-oxidation additives in its composition.

Types of Hydraulic Jack Fluid

There are three main types of hydraulic fluids:

The second type is the safest, but it is also the most expensive, because it was created in a complicated technological process. Glycol hydraulic fluids also have good indications for jacks because they do not interact with working surfaces and also do not harm metals. In terms of price and quality, they correlate with synthetic ones.

The cheapest versions of hydraulic fluid should be considered the petroleum or mineral type. For artisanal conditions, it will suit perfectly, although it does not guarantee good and long-lasting operation of the jack. For those who have a preference for cheaper options, the use in the jack will be a good use of used machine oil that has been replaced in the engine. But before you fill up with recycled oil, you should make sure it is clean.

The range of jack applications is much wider than just using it to change tires on a car. Any experienced car owner knows when to use this device. But in addition to the operating rules, it is important to know how to service and replace the hydraulic material correctly.

Unlike existing lifting mechanisms, the jack is small and light, easy to operate, comfortable and highly reliable. For every car owner such a tool is a necessary and very important thing.

There are several basic types of jacks:

Controls can be manual and electrically operated. Some models can handle loads up to several hundred tons.

Oil Change Recommendations

Before changing or topping up the service fluid, carefully read the jack operating manual and follow the recommendations contained therein.

It is not recommended to pour brake fluid into the hydraulic jacks, nor alcoholic compounds. they can destroy the material of the rubber gaskets and seals used in the construction of the device.

Fill the jack with oil in small increments making sure no air bubbles form in the fluid. Bleed out any entrapped air along with the oil after refilling. To do this, it is necessary to fully inflate several times (raise to maximum and then lower). The plug must then be fitted firmly in the filler opening.

Do not unnecessarily disassemble the check valves and blocking valves. Valve springs and balls require special care.

Only use special quality compounds for filling the jack. Saving on quality will not only significantly reduce the service life of the tools. Liquids not designed for hydraulic jacks reduce the safe operation of these devices and cause accidents.

Timely maintenance and use of quality oil for the hydraulic jack will ensure long service life of the jack.

Qualitative characteristics of oils

When choosing a service fluid for the tools, you should always pay attention to its quality characteristics and compare them with the model of the device, because each of them may have its own requirements.

The main oil properties are viscosity, corrosion resistance, resistance to oxidation, flash and pour point, and the absence of aggression towards the materials of the mechanism.

Viscosity. It directly affects the power of the device, the movement of the material through the nodes of the device and the lubrication conditions as a whole. If the viscosity is minimum, the system is considered more reliable, but it will wear out more quickly with friction, and at low values, there is still the possibility of leakage in the valves. Too much viscosity is not always good for the operation of the equipment, because at low temperatures or when the machine is underpowered, the whole process becomes more difficult.

Corrosion and oxidation resistance.

The higher the oxidation and chemical stability of the oils, the longer they will be good for the function of the equipment.

If oxidation stability is not sufficient, fluid viscosity will begin to change and deposits will appear. In addition, the material of the device, which can be metals and alloys, is affected by the oil. When oil is oxidized, acids and water are released, consequently, sooner or later the material begins to corrode. To prevent it from foaming, anti-corrosion additives and special inhibitors are added to the lubricant to slow down the oxidation process.

In addition to the oil’s viscosity and resistance to oxidation, it is just as important whether the fluid foams or not. There are occasional spikes in pressure inside the equipment, and then air separates from the substance and then becomes foam, which is not very useful and also affects the appearance of erosion.

Filling mechanisms

Here’s how to properly pour the recommended oil into the jack. Sometimes improper transportation can cause hydraulic fluid to leak out and the voids to fill with air. This will cause the jack to malfunction. In this case, change oil.

The rack mechanism is quite large, it is used not only to lift the body, but also to repair old buildings. Before changing the lubricating fluid, it is necessary to lower the mechanism completely. To be sure, release any residual tension by turning anti-clockwise the discharge valve.

The hole where you fill is usually on the body of the tank, often at the bottom of the cylinder. Loosen the neck bolt or plug securely protecting the oil in the reservoir. Then you need an oiler, the nozzle of which should be inserted into the throat and make the pouring.

The hydraulic fluid is sufficient when it begins to overflow. Now you just have to screw in the bolt or plug with force.

The way to fill the bottle jack with grease is a little different. But first it is also necessary to make sure that the mechanism is lowered to the stop. The same method as for the rack and pinion jack is a good insurance measure.

With the bottle design, look for the plug on the top of the master cylinder head. To begin with, the plug is removed and the filling is carried out using a grease gun, which should first be filled with hydraulic oil and vented. In this case, the oil level should be 1/8 inch below the fill hole.

Oil change in a hydraulic jack has its own peculiarities. The mechanism should be disassembled and cleaned before filling. Dirt and rust can form on the piston. The next step is to inspect the gaskets (they wear out rather quickly), and replace them if their integrity is compromised.

Tip: when draining the old oil, you can lose the metal ball located in the valve. The jack will not work without this small part. Drain as carefully as possible.

Do not open the valves yourself. This can lead to failure of the entire unit.

Before you fill up with oil you need to pump the mechanism so it becomes free of air and drain the old liquid. Then you can fill in the oil through the hole in the plug. It is sealed tightly with a threaded plug.

The required level is marked with a marking on the housing. When the level is reached, screw in the plug and pump the mechanism to remove any air s. The piston should be raised to its maximum. Then unscrew the cap again and fill and recirculate. Repeat this procedure several times until fluid begins to leak out. This indicates proper charging. The procedure is easier to perform with an assistant.

As you have seen, filling and changing the oil in the jack is simple enough, you just need to follow the recommendations from this article and it will not be difficult to perform this operation yourself.

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