Morio here!

It’s really cold, isn’t it?
With heavy snow and cold waves hitting various regions, I imagine many people are struggling. I hope spring arrives soon!

In the last blog, I talked about the **mechanism of hydraulic jacks**. This time, I’ll introduce **how to properly maintain hydraulic equipment for long-term safe use and how to troubleshoot problems**!

Proper maintenance helps machines retain their performance and **prevents breakdowns**—and hydraulic equipment is no exception. Let’s dive right in!

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## **1. Basic Maintenance of Hydraulic Equipment**

Hydraulic equipment operates under **high pressure using hydraulic fluid (oil)**, so regular maintenance is crucial. Keeping the following points in check will help prevent failures.

### **(1) Managing Hydraulic Fluid (Oil)**
Hydraulic oil is the **heart** of the system. Since oil degradation and contamination often cause issues, keep an eye on these aspects:

✅ **Check the oil’s color and transparency!**
New oil is clear, but over time, it can **become cloudy or dark**. If dirt accumulates, the **filter may clog, causing stress on the system**. Regular replacement is necessary.

✅ **Prevent foreign substances from entering!**
If dirt or moisture gets mixed into the oil, it can cause **hydraulic cylinders and valves to malfunction**. Always work in a clean environment when refilling oil, and make sure the oil tank is tightly sealed.

✅ **Choose the right viscosity oil!**
The viscosity (thickness) of the oil should match the operating environment.
For **cold climates, use low-viscosity oil**, and for **hot environments, use high-viscosity oil** to accommodate temperature changes.

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### **(2) Checking and Replacing Filters**

Hydraulic equipment has **filters to keep the oil clean**. If a filter gets clogged, **oil flow decreases, reducing system efficiency**. Regular inspections and replacements are necessary.

🔴 **What happens if the filter clogs?**
– The hydraulic system moves **slower**
– Oil flow decreases, causing **overload on pumps and cylinders**
– Internal pressure rises abnormally, leading to **seal (packing) damage**

A good rule of thumb is to **inspect filters every 6 months to 1 year**, depending on the environment and oil condition!

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### **(3) Inspecting Cylinders and Hoses**

Cylinders and hoses **transfer power in hydraulic systems**, so routine inspections are essential!

🔵 **Cylinder Inspection Points**
– **Check for oil leaks** (around pistons and seals)
– **Look for rust or scratches** (damage inside the cylinder can cause malfunctions)

🔵 **Hose Inspection Points**
– **Look for cracks or wear** (especially around bends)
– **Check for oil seepage at connections**

Since deteriorated hoses cause **oil leaks and pressure drops**, replacing them **every 5 years** is recommended!

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## **2. Troubleshooting Hydraulic Equipment Issues**

Even with careful maintenance, **unexpected problems** can occur. Here are common hydraulic issues and their solutions!

### **(1) The Hydraulic System Won’t Move!**
🔍 **Possible Causes**
– Oil is low
– Filter is clogged
– Pump is not working properly
– Electrical system issues (solenoid valve or sensor problems)

🛠 **How to Fix It**
– **Check the oil level and refill if needed**
– **Inspect and replace clogged filters**
– **Listen for abnormal pump noises (if noisy, it may be failing!)**

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### **(2) The Hydraulic System Moves Slowly or Lacks Power!**
🔍 **Possible Causes**
– Oil viscosity is incorrect (thickens in cold conditions)
– Internal pressure is low
– Hoses or valves are clogged

🛠 **How to Fix It**
– **Use the appropriate viscosity oil**
– **Check hoses and valves for blockages and clean if necessary**
– **Inspect the pressure gauge and adjust if needed**

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### **(3) Oil Is Leaking!**
🔍 **Possible Causes**
– Deteriorated seals (packing)
– Aged hoses or loose connections
– Internal cylinder or valve damage

🛠 **How to Fix It**
– **Identify the leaking point and replace the seals**
– **Tighten or replace hoses and connections**
– **Check the cylinder’s condition and repair if necessary**

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## **Summary**

Today, I talked about **hydraulic equipment maintenance and troubleshooting**!

✅ **Basic Hydraulic Equipment Maintenance**
– **Manage hydraulic oil** (regular replacement & prevent contamination)
– **Inspect filters regularly** (replace every 6 months to 1 year)
– **Check cylinders and hoses** (look for leaks and deterioration)

✅ **If Trouble Occurs…**
– **Won’t move?** → Check **oil levels, pumps, and filters!**
– **Moves slowly?** → Check **oil viscosity, pressure levels, and valves!**
– **Oil leak?** → Replace **seals and hoses!**

To **use hydraulic equipment safely and efficiently for a long time, daily inspections are crucial**! In the next blog, I’ll go into **detailed inspection procedures**.

Stay tuned for the next post!

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This blog was created using generative AI.