In most cases, if there's no external leakage, rapid settlement of the hydraulic cylinder often indicates an internal leak in the load oil circuit. To assess the sealing integrity of a hydraulic cylinder, the most straightforward method is to perform a sealing test (and always prioritize safety during this process).
For instance, when testing the boom cylinder's sealing performance, you should first position the boom and bucket at a 90-degree angle. Next, seal the oil ports and lines connected to the bottom chamber of the boom cylinder. Start the engine and raise the bucket until it’s slightly off the ground to measure the settling speed.
When performing the settlement and sealing test on the bucket cylinder’s rod chamber, extend the bucket rod so that the bucket touches the ground. Then, block the oil ports and lines linked to the rod chamber. After starting the engine, lift the boom to raise the bucket off the ground and record the settlement rate. The procedure for testing the bucket cylinder is quite similar.
There are several potential causes for rapid settlement in an excavator’s hydraulic cylinder:
1. Internal leaks within the hydraulic cylinder itself.
2. Leaks occurring between the valve spool and valve body of the control valve.
3. Malfunctioning overload relief valves.
4. The valve spool not being in its neutral position.
To address these issues, Henan Kexing has spent years refining its technology and eliminating outdated practices to ensure superior quality in our hydraulic cylinders. If you're seeking custom hydraulic cylinder solutions, feel free to reach out to Henan Kexing, a dedicated manufacturer specializing in hydraulic cylinder customization.
This content was originally published by Henan Kexing Hydraulic Co., Ltd. Reposting is allowed, but please credit the source.
If you’re looking to enhance your machinery's performance or replace worn-out components, investing in high-quality hydraulic cylinders can make all the difference. At Henan Kexing, we pride ourselves on delivering durable, efficient, and reliable hydraulic solutions tailored to meet your specific needs. Whether you're repairing existing equipment or building something entirely new, our team is here to support you every step of the way. Don’t hesitate to contact us for more information or to discuss your next project!
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