Things to Check When Your Hydraulic System Stops

Blog | March 12th, 2020

Even though modern hydraulic systems are more reliable than ever before, they still stop working correctly occasionally. A hydraulic system can fail for a variety of reasons that range from a failing pump or a severe leak. When it stops working, it can cause a slowdown in production or might bring it to a complete halt depending upon your setup. Locating the source of the problem requires knowledge, common sense and experience. For this reason, we provide you with the following list of things to check when your system stops operating.

Hydraulic Fluid Levels and Type

Always verify whether the hydraulic fluid levels are where they should be when there is a problem with your system. If the levels are low, there may be other issues causing it or you may just need to add new fluid to bring up the level. In addition, if the type of fluid is inappropriate for your system’s temperature, it can work more slowly than recommended.

Hydraulic Filters

Filters that are clogged or dirty will severely impact the performance of your hydraulic system. Replace the filters regularly to avoid this issue.

Hydraulic Lines

When these lines cannot deliver hydraulic fluids at the appropriate rate, the entire system is affected. Reasons for issues with these lines include them becoming clogged or collapsing.


Problems with the pump also can cause a malfunction in your system. If the pump is dirty, out of alignment or due for replacement it can dramatically lower the performance of your system. Also, a pump contains couplings, belts or suction lines that may require attention to prevent issues.

Air Trapped in the System

Another thing to check for is there is air trapped in your system. This can cause it to operate erratically.

Oil Level

At times, a hydraulic system becomes excessively noisy or develops undesirable vibrations. Either can be caused by an insufficient oil level or the oil containing air. Check not only the oil level but also the suction line and inlet screen to ensure they are not plugged or clogged. Remember to be certain that the oil is the right viscosity on top of all this.

Heat Levels

Excessive heat in a hydraulic system also is a reason for the system malfunctioning. One purpose of the hydraulic fluid is to control the generated heat, but when the system overheats it can cause the fluid to heat up as well. The fluid overheating can be due to the levels being too low or contaminated. Oil may be seeping through the relief valve too, and the control valve may need adjusting. Worn components also can make the system develop excessively high temperatures.

The above are just some examples of the things to check when your hydraulic system malfunctions. Be certain to include every part of it in your inspection to locate the issues.

Mobile Hydraulic Specialties Pty Ltd

Factory 89, 38-40 Popes Road
Keysborough, Victoria, 3173

Phone: (03) 9798-6511

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Contact Us

Mobile Hydraulic Specialties Pty Ltd

Phone: (03) 9798-6511
Address: Factory 89, 38-40 Popes Road, Keysborough, Victoria, 3173