The use of hydraulic machinery in heavy construction is widely spread; likely because of the large amount of power that can be transferred through the different parts of the machine in a short amount of time. Compared to, for example, pneumatics, hydraulics contain enough power to smoothly lift heavy burdens without becoming jerky, which is why it's particularly suited for heavy construction operations. Hydraulic cylinders are the main parts of these systems and are of vital importance for the entire machine. It's therefore important to keep the cylinder in top condition. Leaking cylinders or unnecessary wear can prove disastrous for the hydraulic system, as well as for the entire machine.
Repairing errors -- dissemble and reassemble
To repair a faulty hydraulic cylinder, it might be necessary to dissemble the entire hydraulic system. This can be done on your own if you feel that you are capable, but in the case of reappearing errors, it's advised to get the help of a professional hydraulic cylinder service. It might be unnecessarily complicated to dissemble the entire hydraulic system to find the flawed component within the cylinder. To reassemble the parts correctly might be even more of a hassle. This is especially the case when it comes to reappearing errors, since it then has to be done many times. The easiest solution is to get in contact with a professional who can evaluate the hydraulic system and come with solutions right away, instead of having to take the machine apart multiple times just to be stuck with the same problem all over again.
Doing it yourself
With so many different brands and types of cylinders, it's not always easy to find the one you need for your machine. Many spare parts can be ordered over the internet, along with appropriate repair kits for the type of work you wish to perform. On the internet there are also many sources of DIY-manuals on how to repair your cylinder. Sometimes it's possible just to repair the leaking cylinders, replace the hydraulic fluid and put it back; other times you might have to replace the cylinder or other parts of the system entirely. It all comes down to how much money you are willing to spend. If the cost of the replacement hydraulic liquid starts to overshadow the cost of what a new cylinder would amount for, then it's probably for the best to just replace it. Again, if you feel secure that you can do it, it's fully possible to manage on your own. Otherwise, workshops are an option worth to consider.