In hydraulic systems, components are connected together by different fittings and pressurized fluid passes through it. Fluids under high temperature can be dangerous to workers and the environment if it leaks. It will be more clear by reading the blog Hydraulic Fluid Dangers.
If you are thinking to purchase a perfectly sealed hydraulic system without any leakage. Then, just erase that thought. Because till this moment, no such system is created in my knowledge. It doesn’t mean that you won’t get any completely sealed hydraulic system. I’m trying to explain that there are a lot of systems that last for a long time by providing extreme performance. But eventually, their performance will reduce due to leakage caused as a result of
- Damaged Seals, fittings, lines, etc..
- The vibration of the hydraulic system
- Overtight/loosened fittings
These leakages can be the major reason for premature hydraulic system failure if it is not maintained properly. Most of the systems use hydraulic seals and fittings to prevent internal and external leakages. But still, gradually these seals and fittings will get damaged and results in hydraulic system leakage.
Hydraulic system leakages are categorized into:
The leakages caused as a result of damaged hydraulic lines that can be recognized easily are external leakages. Here, the fluid will leak on to the floor and any user can easily spot that leakage. This type of hydraulic leakage can be repaired quickly but at the same time are harmful to both workers and the environment. This issue will reduce the operating pressure and increases system vibration.
Internal leakages occur within the hydraulic system and it can be intended or unintended. Intended hydraulic fluid leakages will lubricate spools, valves and pistons. But, unintended excess hydraulic fluid leakages are difficult to troubleshoot and will negatively affect the system performance.
Whenever you detect a hydraulic system leakage, then there are few safety precautions that you need to obey before fixing it. First of all, you need to realize that hydraulic leakages can be dangerous if you try to fix it without enough experience. If are fixing hydraulic leakages for the first time, please take the assistance of an experienced technician. This article will provide theoretical knowledge only, to fix hydraulic leakage issues in your system practical knowledge is necessary. Following are the precautions that you need to consider while repairing.
- Depressurize the system before inspecting the leakage.
- Use protective wears.
- Don’t use bare hands to check leakage.
- Clean the fittings while replacing or reassembling.
- Don’t overtight the fittings
- Hydraulic fluids can be flammable. So, don’t expose it to fire.
Also, Read: Is Hydraulic Fluid Flammable
The hydraulic hose and cylinder are the two components having a high risk of leakage. As a leakage preventive measure, it is important to inspect the system at a regular interval. Checking the fluid level, replacing seals, lubricating fittings, etc.. will help you to troubleshoot hydraulic system leakage.
How to fix hydraulic Hose Leak?
Hydraulic hose leakages can be a result of improper installation or wrong selection of hydraulic fittings. Leakages at the connecting ends will be caused due to damaged or missing seals. Such problems can be eliminated by reducing the number of connectors in the hose assemblies and by using suitable seals and fittings. If the leakage occurs at any other hose section other than end connectors, it will be suitable to replace it.
How to fix a leaking hydraulic cylinder?
Hydraulic cylinders play a major role in every hydraulic application. Piston seal leakage is one of the important cause of hydraulic cylinder malfunctions. Replacing the piston seal is the only solution for eliminating this leakage issue. For this, you can contact a hydraulic cylinder repair shop or can be done yourself(only if you have enough practical experience).