When it comes to enhancing your excavator’s versatility, the IMPACT Hydraulic Power Thumb is a must-have attachment. Designed for superior grip and control, it’s perfect for handling logs, rocks, demolition debris, and other bulky materials.

Built tough to suit a wide range of machines—from 1T mini excavators to 10T heavy-duty units—our hydraulic thumbs deliver strength, reliability, and performance in all conditions.

If you’ve just purchased one, here’s a step-by-step guide on how to install it on your machine.

Step-by-Step: Installing Your IMPACT Hydraulic Power Thumb

Step 1: Position the Boom

Tilt the boom to the correct position as shown in your installation guide and ensure the quick hitch is curled in. This gives you the right working angle for mounting.

Step 2: Align the Frame

Centre the power thumb frame both at the top and bottom on the excavator boom. Proper alignment is critical for smooth movement and functionality.

Step 3: Mark Your Weld Points

Once aligned, mark the locations where the frame will be welded onto the boom. Double-check positioning before moving to the next step.

Step 4: Prepare the Surface

Grind off any paint or coating in the areas to be welded. This ensures a clean, solid weld and prevents contamination.

Step 5: Tack Weld the Frame

Apply tack welds to hold the frame in place temporarily. This allows you to test the thumb's positioning before final welding.

Step 6: Bucket Clearance Test

Using your excavator buckets, test the thumb's range of motion. Ensure it clears the bucket properly and matches the curvature of your digging tools.

Step 7: Final Weld

Once satisfied with the test fit, remove the hydraulic thumb and proceed with fully welding the frame to the boom. Follow standard safety and welding procedures.

Step 8: Connect Hydraulic Hoses

Install the hydraulic hoses and connect them to your machine’s auxiliary hydraulic ports. Make sure all fittings are tight and leak-free.

Step 9: Test Operation

Fire up your machine and give your new hydraulic thumb a full test run. Check for smooth movement, proper gripping, and hose clearance.

Why Choose the IMPACT Hydraulic Power Thumb?

• Suits a wide range of excavators (1T–10T)
• Made from high-grade, wear-resistant steel
• Easy to install with standard tools
• Designed for maximum gripping power and operator control
• Backed by a 1-year warranty and Australia-wide shipping

Ready to Upgrade Your Machine?

Whether you're working in demolition, landscaping, civil construction, or forestry, the IMPACT Hydraulic Power Thumb will make your job faster and more efficient.

Browse the full range and request a quote today at impactattachments.com.au

Or contact us directly to speak with an expert on 03 9971 2089