How to Rebuild a Welded Hydraulic Cylinder?

Introduction 

 

Welded hydraulic cylinders play a remarkable role in the generation of energy. They transform the fluid force into linear work and help optimize work efficiency.

 

Whether pressing or pushing, heavy-duty tasks can degrade the functionality of the hydraulic cylinders. They need the repair and timely assessment.

 

That is where you have to come up with the rebuilding ideas. How can you rebuild a welded hydraulic cylinder? If not, this guide is for you. We will discuss rebuilding a welded hydraulic cylinder and enjoying a flawless performance.

 

Why should you rebuild a welded hydraulic cylinder?

Rebuilding can be a good idea because it comes with tons of benefits. All those benefits are related more to savings and offer hassle-free functionality.

 

Let’s see why you should think of rebuilding!!

 

Cost efficiency 

 

Do you want to buy a new hydraulic cylinder? Buying a new one can be more expensive than repairing the current one. So, it saves costs and decreases the overall budget.

 

Reduced downtime 

 

Purchasing the new tools comes with the hassles of visiting the place and waiting for the installation. On the other hand, repairs occur on the site and provide better access.

 

Sustainability

 

Recycling and reuse of different components is always an eco-friendly idea. It is because of the positive impact on the environment.

 

Signs that show the rebuilding of welded hydraulic cylinders

Hcl-Welded Hydraulic Cylinder-1

It is not always repairing you who should go with the rebuilding. There are a few signs you should look for before thinking of rebuilding.

 

Leaking hydraulic fluid

 

Closely assess the various components of the hydraulic cylinders. See the fittings. Can you observe any leakage of the hydraulic fluid? If yes, it is time to go for the rebuilding.

 

Decreased performance 

 

Decreased performance is a clear-cut sign of the hydraulic cylinder wearing. It can also prompt the hydraulic cylinder rebuild and repair for efficient functionality.

 

Abnormal sounds

 

Can you hear the excessive sounds? Excessive knocking and grinding are other signs that you must go for the repair of your hydraulic cylinders.

 

Physical damage

 

Bent rods and barrels are physical signs to observe. If you find any signs, get ready to do real-time tasks here.

 

Tools and materials needed for rebuilding 

Welded Hydraulic Cylinders

Before you start rebuilding, it is better to prepare your tools.

 

So, what tools do you need? Here is the comprehensive list.

 

  • Wrenches. These help tighten up the fittings. Sometimes, you can help remove bolts and fittings.
  • Hydraulic Seal Kit. This kit has all the replacement seals and O-rings. Ensure they match the specifications of the hydraulic cylinder.
  • Cylinder Repair Bench. A secure place to work on the cylinder.
  • Snap Ring Pliers. They help remove retaining rings.
  • Pry Bars and Screwdrivers are premium tools for the disassembly of different components.
  • Torque Wrench. For precise reassembly, torque wrenches stand out as premium tools. 
  • Cleaning Supplies. Rags, solvents, and brushes are ideal for cleaning your hydraulic cylinders.
  • Measuring Tools. Calipers or micrometers give accurate readings for your measurements.
  • Grinder or Cutting Torch. They are impactful for the elimination of welded end caps.
  • Hydraulic fluid is the magic fluid that delivers vital power. Refill the system with hydraulic fluid after rebuilding.

 

Step-by-step Instructions to rebuild a welded hydraulic cylinder 

Robot welding Hydraulic Cylinders

Rebuilding a welded hydraulic cylinder is not challenging if you know the step-by-step guide. Let’s explore the various steps here.

 

Step 1: Prepare workspace 

 

Have all your tools ready. Prepare your safety kit with goggles, gloves, and other components.

 

Choose a stable surface for work. Check if you have all the replacement components.

 

Step 2: Drain hydraulic fluid 

 

Disassembly can cause the spillage of the hydraulic fluids. Therefore, drain it. Open and disassemble all the hoses and fittings to drain all the hydraulic fluid from different components. 

 

Step 3: Disassemble Parts

 

Real work starts now! Disassembly of the different components tests your skills. You can consider:

 

Cut the welds

 

Cut the weldings. Use the cutting torch while saving the end caps. Reduce the damage by thoroughly cutting the components.

 

Remove rod

 

Remove the rod and piston out of the barrel. Avoid any damage during the sliding activities.

 

Disassemble rod

 

Now, you can remove all the components thoroughly. Piston, rod, and seals. Remove all the parts. Use snap ring pliers for this job.

 

Scrutinize components 

 

Now, look at all the components. Can you see the signs of wear and tear? If yes, it is time for repair and a timely approach.

 

Step 4: Clean Hydraulic System

 

You should assess all the hydraulic cylinder components. Scratches, dents, and cracks are prominent in the hydraulic cylinders. Also, check the piston for wear and tear.

 

Step 5: Replace Seals and O-rings 

 

Seals and O-rings are often the culprit for most of your wearing tasks. For example, their wearing and improper functionality can leak the fluids and damage other components. Behind the decreased performance of hydraulic cylinders are also crucial components.

 

So, replacing the old and worn-out seals with the newer ones is better. Use the seal kit and install the newer seals and rings. Recheck for the leakage of fluid. Verify the fundamental working mechanisms.

 

Step 6: Reassemble 

 

Once you have removed and cleaned parts, it is time for reassembly. You can reassemble by:

 

  • Install rod assembly. Prepare the piston and gland to attach it to the rod.
  • Insert the rod into the barrel. Slide the rod into the barrel.
  • Secure end caps. Weld the end caps and secure all the components.

 

Step 7: Test System 

 

Congrats! You have done a great job! It is time for the final hit— test the system. Inspect components and check the functionality.

 

Conclusion 

 

Do you want to reduce the need for welding? Come up with thrilling ideas, such as buying quality hydraulic cylinders. They reduce the need for repairing and prove to be profitable in the long term.

 

Do you want to purchase the welded hydraulic cylinders?

 

You already have a top-notch supplier— QuanYe Hydraulic Cylinder Manufacturer. We have 10+ years of experience in manufacturing top-notch hydraulic cylinders. Also, you get the affordable prices. Check out the quality hydraulic cylinders right away!