How to Change a Bit on a Hydraulic Concrete Breaker Attachment

Changing the bit on a hydraulic concrete breaker is a crucial maintenance task that ensures optimal performance and safety during operations. This guide will walk you through the necessary steps to efficiently and safely change the bit on your Bobcat HB Series Hydraulic Breaker, including models HB280, HB380, HB580, HB680, HB880, HB980, and HB1180.

Precautions Before Starting

Before you begin, it’s essential to take the proper safety precautions:

1. Ensure Safety: Place the hydraulic breaker in a horizontal position. This prevents the bit from falling unexpectedly, which could cause injury.
2. Disconnect Hydraulic Hoses: Make sure that the hydraulic hoses are completely disconnected from the breaker to avoid accidental activation.
3. Be Mindful of Weight: The bit can be heavy. Use caution to ensure it does not fall on your foot or cause injury.

Steps to Change the Bit

Step 1: Remove the Top Pin

To start the process, you will need to remove the top pin that secures the bit in place. Here’s how:

• Use a Punch and Hammer: Take a punch and a hammer, and carefully tap on the top pin to drive it away from the holder dowel. Ensure you do this gently to prevent damage to the components.

Step 2: Remove the Old Bit

Once the pin is removed, you can take out the old bit. Here are some tips:

• Check for Wear: Inspect the bit for signs of wear and tear. If it’s heavily worn, it’s time to replace it with a new one.
• Store in a Safe Place: Keep the old bit in a safe place until you securely install the new one to avoid any loss.

Step 3: Install the New Bit

Now, it’s time to install the new bit:

• Align the New Bit: Carefully align the new bit with the holder dowel. Ensure it fits snugly into place.
• Insert the Pin: Once aligned, insert the top pin back into its original position to secure the new bit. Use the punch again if necessary to ensure it’s properly seated.

Step 4: Reconnect Hydraulic Hoses

After securing the new bit, reconnect the hydraulic hoses to the breaker:

• Check Seals and Connections: Ensure that the connections are tight and free from leaks.

Step 5: Test the Breaker

Finally, it’s important to test the breaker to make sure everything is functioning correctly:

• Operate the Breaker: Start the hydraulic breaker to ensure the new bit is working properly. Listen for any unusual sounds that may indicate a problem.

Conclusion

Changing the bit on a hydraulic concrete breaker attachment, such as the Bobcat HB Series, is a straightforward process when done correctly. By following these steps and taking the necessary precautions, you can ensure that your hydraulic breaker remains in excellent working condition, ready to tackle any concrete demolition task. For further detailed instructions, refer to the Bobcat HB Series Hydraulic Breaker Workshop Repair Service manual, which is an invaluable resource for maintenance and repair.

By keeping your equipment well-maintained, you’ll improve its lifespan and performance, making your construction tasks more efficient and safer.