When Changing A Hydraulic Filter What Should You Do First
When replacing hydraulic filters, it is important to do it the right way. Not doing this can cause a lot of problems. While the steps are easy to follow, knowing how to replace a filter isn't enough. This article will also explain how to choose the right type of filter and when to replace it.
Replacing a hydraulic filter takes just a few steps:
Lock the machine.
Secure the filter wrench or strap wrench to the bottom of the filter.
Turn the wrench to remove the filter.
After removal, verify that the old seal is completely detached and clean the filter head
Wipe the seal on the new filter with clean oil.
Put the new filter in place, rotate until the seals just touch, then tighten 3/4 turn to finish.
Unlock the machine and operate.
Double check to verify that a good seal has been achieved.
For safety and to prevent equipment damage, the machine must be locked. When removing the filter, you should not grab it from the middle or the top. This can damage the old filter and increase the time it takes to replace the new filter.
Choosing the Right Type of Hydraulic Filter
Orange hydraulic filter isolated on white background.
The type of hydraulic filter chosen as a replacement is usually specified by the manufacturer of the machine/system. Failure to use the correct filter can damage the machine.
When to change the hydraulic filter
In this modern era, most hydraulic filters have indicators that notify you when they need to be replaced. Green means the filter is OK. However, once it turns yellow, it's time to replace the filter. Yellow means the filter is starting to clog. This reduces performance, so it's important to replace the filter when the light turns yellow.
If the light turns red, the hydraulic filter must be replaced immediately. Bypass (not filtering) is happening and the only remedy is to replace the filter as soon as possible.
In addition to looking at indicators, hydraulic filters should be checked every 400 hours during scheduled preventive maintenance. You should check the filter to see if there is any back pressure. If there is hydraulic oil back pressure, replace the filter at this time (although the indicator light is green, it is close to yellow.)
Hydraulic oil monitoring can also determine if the filter needs to be changed. If the oil contamination level is satisfactory, the filter is working properly and does not need to be replaced. If the levels start to change, it may be time to replace the filter.
At Xueyuan Filter, we have the experience and expertise to not only help you choose the right filter for your equipment, but also help you with all your hydraulic system maintenance needs. Contact us today to find out how we can help you!
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Keeping the cylinder fluid and tank clean sounds easy.
After all, fluid cleanliness is an essential process for high-performance hydraulic cylinders to remain functional.
But if it were so easy to determine when a hydraulic cylinder filter should be changed, everyone would change the filter at any time without issue.
One of the main problems with changing hydraulic filters is changing them too early or too late.
If you change your filter too early, you risk wasting money by replacing the filter when it's not completely full.
If you change the filter too late, you can increase particle contamination and can cause component damage.
Damaged components increase the likelihood of system failure and the need to replace or repair hydraulic cylinders.
Offline filtration (also known as renal circulation). Continuous filtering is allowed.
These filters provide flexibility in placement.
Pressure filtration. Designed to withstand system pressure, filtering particulate contamination from pressure lines protects downstream components.
Return to filter. Preventing contamination when the fluid returns to the tank, filtering the return line is an economical way to maintain fluid cleanliness.
Oil return filtration is the most commonly used filtration method for hydraulic systems.
Hydraulic filters clogged with particulate contamination can cause pressure drops and hydraulic system damage.
Monitoring pressure drop is becoming increasingly important for fluid cleanliness and the overall function of hydraulic filters.
Differential blockage indicators provide continuous monitoring, enabling you to receive pressure drop alerts, which can serve as a warning of potential component problems or system failure.
Its main function is to remove dirt and particles from hydraulic components.
Particle contamination can wreak havoc on your systems and can potentially cause your mobile equipment to fail parts, component failures, and downtime.
More advanced monitoring options include continuous monitoring of filter pressure drop.
These visual or electronic monitoring systems can provide more accurate filtering information to help you maintain your hydraulic cylinder filters and keep them running at optimum capacity.
Ideally, the hydraulic filter should be replaced when the filter's dirt holding capacity is about 80% before the filter is bypassed