Information about hydraulic jacks
There are many different types of jack, depending on the desired purpose and weight. Remember to buy a suitable outlet for this purpose, because it is crucial not to overload, as this will break the internal seals. If you are worried that you are overloaded, you can check to see if the oil has spilled around the piston. This is a sure sign.
Even though these are hydraulic jacks, there is no need to add any liquids or hydraulic oil to them during their service life and use. Only in some cases, when you find that there is a leak, you need to add additional oil. Sometimes, in rare cases, the air is introduced, in which case, oil can be added to facilitate the lifting process. If you feel the need to add oil, you can do this by first finding the three screw heads. Two to check the valves, a third to add fluid. Whatever you do, do not open the LED screws. You can quickly lose small ingredients. You can find a screw to fill the liquid in the cylinder body. You will find the “oil” written on it. This is the only place you can add oil, and do not try to add oil anywhere else. When adding oil, make sure that the tank is full, waiting for the liquid to come out of the hole. It is also important that the piston is in the lower position.
In some cases, air may enter the master cylinder of the hydraulic jack. To fix this, lift the piston all the way up and then lower it with the bleed valve. You will need to hear a light “psst” sound when air comes out of the master cylinder, and you can do this by slightly loosening the oil screw. The air may not fall entirely for the first time, which may require you to repeat this several times. Again, do not open other screws that should be checked by valves; if you do, you can simply add more air to the cylinder.