How to Identify Internal Leaks & 'Bypassing' in Your Lift Cylinder

Introduction:

Hydraulic lift cylinders are integral to the efficient functioning of hydraulic systems. However, internal leaks within these cylinders can lead to reduced performance, potential hazards, and increased maintenance costs. Identifying and addressing internal leaks promptly is crucial to ensure the safety and longevity of your hydraulic equipment. In this blog post, we'll provide you with a step-by-step guide on how to recognize internal leaks in your lift cylinder.

Signs of Internal Leaks in Lift Cylinders:

1. Slow or Jerky Movement: One of the most common signs of internal leakage in a lift cylinder is a noticeable decrease in its smoothness of movement. If you observe sluggish or jerky movements during operation, it's likely that internal leaks are affecting the cylinder's performance.

2. Drifting Load: A telltale sign of internal leaks is when the lift cylinder fails to maintain pressure, causing the load to slowly drift down, even when the control valve is in the neutral position. This drifting indicates a loss of pressure due to internal leakage.

3. Decreased Lifting Capacity: Internal leaks result in a reduction of effective force in the lift cylinder, leading to a decreased lifting capacity. If you notice that the cylinder is unable to lift loads it could handle before, it may be experiencing internal leaks.

4. Overheating Hydraulic Fluid: Internal leaks generate additional heat within the hydraulic system. Check for overheating of the hydraulic fluid as it may indicate inefficiencies caused by internal leaks.

5. Fluid Accumulation: Inspect the exterior of the lift cylinder for any visible signs of hydraulic fluid around the seals or joints. Fluid accumulation on the cylinder's surface suggests internal leakage.

6. Abnormal Noise: Internal leaks can lead to cavitation or aeration of hydraulic fluid, resulting in unusual noises like hissing or sputtering during cylinder operation.

7. Excessive Hydraulic Fluid Consumption: If you find yourself frequently topping up hydraulic fluid levels or notice a significant decrease in fluid level without any apparent external leaks, it could be a sign of internal leakage.

8. Cylinder Extension or Retraction Issues: Uneven extension or retraction of the cylinder could indicate internal leakage on the slower side.

Conclusion:

Detecting and addressing internal leaks in lift cylinders is vital for maintaining the efficiency and safety of hydraulic systems. By recognizing the signs of internal leakage and following the steps outlined in this guide, you can promptly take appropriate action to resolve the issue. Regular maintenance and timely repairs will not only extend the life of your lift cylinder but also ensure smooth and reliable performance for years to come.