Replacing the control arm on a Kubota KH 51 excavator might seem daunting, but with a clear step-by-step guide, you can tackle it even with minimal mechanical experience. click here for more details on the download manual…..
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Here’s a simplified explanation of the process:
### Tools and Materials Needed:
– Wrenches and sockets (specific sizes depending on your excavator)
– Screwdrivers
– Pliers
– A jack or lifting equipment
– Safety glasses and gloves
– Replacement control arm
– lubricant (like grease)
– Service manual (optional but helpful for specific details)
### Step-by-Step Guide:
#### 1. **Safety First**
– Before you start, ensure you’re wearing safety glasses and gloves. Safety is paramount when working with heavy machinery.
#### 2. **Prepare Your Excavator**
– **Turn Off the Machine**: Ensure the engine is off and the key is removed.
– **Stabilize the Excavator**: If the excavator has tracks, make sure it’s on a stable, flat surface. Use a jack or lifting equipment to safely raise the machine if necessary.
#### 3. **Identify the Control Arm**
– Locate the control arm that needs to be replaced. It’s typically a large metal component that connects the machine’s body to the wheels or tracks.
#### 4. **Remove the Old Control Arm**
– **Loosen Bolts**: Use the appropriate wrench or socket to loosen and remove the bolts that hold the control arm in place. Keep these bolts safe if you plan to reuse them.
– **Disconnect Any Attachments**: If there are any hydraulic lines or cables connected to the control arm, carefully disconnect them. Be cautious as some fluid may leak out.
– **Take Out the Control Arm**: Once all bolts and attachments are removed, gently pull the control arm away from the excavator. If it’s stuck, you might need to tap it lightly with a rubber mallet.
#### 5. **Prepare the New Control Arm**
– **Inspect the New Part**: Before installation, check the new control arm for any defects or damage.
– **Lubricate**: Apply some lubricant to the bolt holes to help with installation.
#### 6. **Install the New Control Arm**
– **Position the New Arm**: Align the new control arm with the mounting points on the excavator.
– **Insert Bolts**: Start by hand-tightening the bolts to secure the control arm in place. Once all bolts are in, use your wrench or socket to tighten them securely.
– **Reconnect Attachments**: If you disconnected any hydraulic lines or cables, Reconnect them now.
#### 7. **Final Checks**
– **Double-check Tightness**: Ensure all bolts are tightened properly,
and nothing is loose.
– **Check for Obstructions**: Ensure no tools or parts are left in the work area.
#### 8. **Test the Excavator**
– **Lower the Excavator**: If you used a jack or lifting equipment, safely lower the excavator back to the ground.
– **Start the Engine**: Turn on the excavator and test the movement of the control arm. Ensure everything is functioning smoothly.
### Conclusion
Congratulations! You’ve replaced the control arm on your Kubota KH 51 excavator. If you encounter any difficulties during the process, don’t hesitate to consult the service manual or seek help from someone with more mechanical experience. Always prioritize safety and best practices when working with machinery.
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