Replacing Worn Out Rubber Tracks on a Kubota KX121-2 Mini Excavator

Replacing Worn Out Rubber Tracks on a Kubota KX121-2 Mini Excavator

Regular maintenance and part replacement are crucial for heavy equipment like the Kubota KX121-2 mini excavator to keep it running smoothly for years. One of the most important wear parts to keep an eye on are the rubber tracks. The rubber tracks provide traction and allow the excavator to move around the job site. But over time, they can become damaged or worn out and need replacing.

In this article, we'll go over everything you need to know about replacing worn out rubber tracks on a Kubota KX121-2 mini excavator. We'll cover how to inspect the tracks, removing and installing new ones, plus tips for extending the life of the replacements.

When to Replace the Rubber Tracks

The rubber tracks on excavators like the Kubota KX121-2 are considered normal wear parts. With regular use, it's typical for them to need replacement every 300-500 hours or 1-2 years. Here are some signs it's time for new rubber tracks:

• Cracks, punctures, or tears in the rubber
• Noticeable stretching or deformation
• Metal components poking through the rubber
• Frequent track derailments
• Excessive vibration during operation
• Reduced traction and mobility

Catching damaged tracks early before a blowout can prevent further issues. Routinely inspect the tracks for cuts, embedded rocks, dry rot, and missing or damaged lugs. Also check the sprockets, idlers, rollers and tensioners for wear.

Removing the Old Rubber Tracks

Once you've determined the tracks need replacing, follow these steps to remove the old ones:

1. Park the excavator on a firm, level surface with the tracks facing up. Engage the safety locks.
2. Clean away any built-up mud or debris from the tracks, idlers and rollers.
3. Locate the master link that connects the two ends of the track. It will be different from the other links.
4. Use a hammer and punch to drive out the master link bar and disconnect the ends.
5. Loosen the track tensioner to create slack in the system.
6. Roll the track off the idler and drive sprocket. Watch for stuck links that may need persuasion with a hammer.
7. Inspect the rollers, idlers and drive sprockets for wear now that the tracks are removed. Replace components as needed.

With the old rubber tracks removed, now the excavator is ready for the new replacement tracks.

Installing the New Replacement Rubber Tracks

Here are the steps to install new OEM replacement rubber tracks on a Kubota KX121-2:

1. Clean the drive sprocket, idler, rollers and frame surfaces to remove dirt, debris and rust.
2. Compare the new and old track lengths side by side. They should match.
3. Lay out the new track and connect the ends with the master link. Tap in the retaining bar.
4. Loop the track around the rollers and feed it onto the sprocket and idler.
5. Take up slack in the track by tightening the tensioner until proper tension is achieved.
6. Rotate the track a few times to seat it and check for stiff links. Lubricate if needed.
7. Repeat the process for the other side.

That covers the basics of removing the old worn rubber tracks and installing new replacements on a Kubota KX121-2 mini excavator. Properly maintaining the rubber tracks is important for optimal performance and reliability.

Tips for Extending Track Life

To maximize the lifespan of the new rubber tracks on your KX121-2, keep these tips in mind:

• Maintain proper track tension. Tracks that are too loose can derail and be damaged.
• Avoid sharp turns and spinouts which can tear and stress the rubber.
• Keep tracks free of embedded rocks and debris.
• Lubricate to prevent stiff and frozen links.
• Store indoors or use a track cover when not in use.
• Consider track chains or rubber pads when working on abrasive surfaces.

By regularly inspecting the Kubota KX121-2 rubber tracks and following the manufacturer's maintenance recommendations, you can get the maximum return on your investment. Just be sure to replace them promptly when wear becomes excessive. Installing new OEM factory tracks will restore traction and mobility, preventing further damage.

For quality heavy equipment parts like Kubota KX121-2 excavator rubber tracks, shop at a reputable dealer. They can ensure you get the right replacement parts for optimal fit and performance. Proper maintenance and using OEM parts is key to get the most value from your Kubota mini excavator.

FAQs

How can I tell when the rubber tracks need replacing?

Look for cracks, punctures, stretching, metal components poking through, frequent derailments, excessive vibration, and reduced traction. If the lugs are badly worn or missing, it's definitely time for new tracks.

Can I replace just one rubber track or do I need to do both?

It's recommended to replace both tracks as a set, even if only one is worn out. Having unequal wear between old and new tracks can cause performance issues.

What tools do I need to remove and install the tracks?

Basic hand tools like a hammer, punch, pry bar, sockets, and torque wrench. You'll also need a way to safely lift and support the excavator to access the tracks.

Should I buy OEM or aftermarket replacement tracks?

OEM factory Kubota tracks offer the best fit, performance, and safety. Aftermarket options are cheaper but may wear faster or not fit correctly.

How can I make the new tracks last longer?

Maintain proper tension, avoid sharp turns, keep tracks free of debris, lubricate often, store indoors when possible, and use track protection on rough terrain.