How to check hydraulic fluid for contamination?

How to Check Hydraulic Fluid for Contamination?

Regularly checking hydraulic fluid for contamination is crucial for maintaining the performance and longevity of hydraulic systems. Here are the steps to follow:

1. Ensure the hydraulic system is powered off and has cooled down sufficiently.
2. Locate the hydraulic fluid reservoir or sight glass, usually positioned on top of the hydraulic pump or cylinder.
3. Inspect the reservoir or sight glass for any visible impurities, such as dirt, debris, or water. Use a flashlight if needed.
4. If the reservoir or sight glass is transparent, check the fluid level against the recommended level markings. If it is opaque, proceed to the next step.
5. If possible, drain a small amount of hydraulic fluid into a clean container for further examination.
6. Visually inspect the drained fluid for any signs of contamination, including cloudiness, discoloration, or the presence of solid particles.
7. If the drained fluid appears contaminated, it is advisable to send it to a laboratory for professional analysis.
8. If no visible signs of contamination are found, it is still recommended to periodically send a sample for analysis to ensure the hydraulic fluid's overall condition.
9. After completing the inspection, properly dispose of the drained fluid and refill the reservoir with clean, recommended hydraulic fluid.

By regularly checking hydraulic fluid for contamination and addressing any issues promptly, you can maintain the efficiency and reliability of your hydraulic system.