Inspecting and Adjusting Crawler Tension on the Takeuchi TL140

[MikePhua]

The Takeuchi TL140 is a versatile and powerful compact track loader commonly used in construction, landscaping, and forestry. It’s equipped with a highly efficient hydraulic system and strong undercarriage, making it ideal for handling tough terrains and lifting heavy loads. However, like all tracked machines, proper maintenance is essential to keep the machine running smoothly and extend its lifespan. One key aspect of this maintenance is inspecting and adjusting the crawler tension, which plays a crucial role in the performance and durability of the tracks.
Importance of Proper Crawler Tension
The crawler tension of a compact track loader like the Takeuchi TL140 is vital for ensuring proper track alignment, preventing premature wear, and reducing the likelihood of track damage or derailment. Tracks that are too loose can cause excessive wear on both the tracks and the sprockets, while overly tight tracks can put unnecessary strain on the undercarriage and drive components, leading to costly repairs.
Maintaining the correct track tension also improves the overall efficiency of the machine. Properly tensioned tracks maximize the machine’s traction, stability, and comfort for the operator, while minimizing wear and fuel consumption. Therefore, regular inspection and adjustment of the crawler tension are essential parts of the machine's maintenance routine.
When to Inspect and Adjust the Crawler Tension
Typically, the crawler tension should be inspected at regular intervals, such as every 50 hours of operation, or more frequently if the machine is used in harsh conditions. Operating in extreme temperatures, wet conditions, or rough terrain can accelerate wear and cause the tracks to shift or become misaligned. Additionally, if the machine begins to experience track slippage or unusual sounds during operation, it could indicate that the crawler tension needs adjustment.
For the Takeuchi TL140, the manufacturer recommends checking the track tension during routine maintenance, which includes the 50-hour interval for basic checks and adjustments. This routine inspection helps identify issues early, preventing them from developing into more significant problems.
How to Inspect the Crawler Tension on the TL140
Inspecting the crawler tension involves checking for both the visual alignment of the tracks and the slack in the system. The process is straightforward but requires a few specific steps to ensure proper adjustments.
Step 1: Safety First
Before performing any maintenance, it’s crucial to ensure the machine is parked on a level surface and the engine is off. Use the appropriate safety gear, including gloves and safety glasses. Secure the machine to prevent movement while you are working underneath or near the tracks.
Step 2: Visual Inspection of the Tracks
Visually inspect the tracks for signs of excessive wear, cracks, or damage. Check the condition of the track pads, ensuring they are not excessively worn or missing. A significant amount of wear can indicate that the tracks are not properly tensioned, as they can cause uneven contact with the ground.
Additionally, check for debris buildup between the track rollers and undercarriage. Dirt, mud, or plant material can cause irregularities in how the tracks move, which may lead to uneven tension.
Step 3: Measuring the Track Tension
To measure the track tension on the TL140, you’ll need to check the amount of deflection in the track. This is done by pressing down on the track between the front and rear sprockets and measuring the amount of movement. Generally, the track should deflect about 1-1.5 inches when applying moderate pressure. If the deflection is too much, the tracks are too loose. If the deflection is too little, the tracks are too tight.
Step 4: Inspect the Track Roller
Check the condition of the track rollers, idlers, and the track adjuster itself. Look for any signs of wear, such as flat spots on the rollers or excessive wear on the idlers. If these components are damaged, they may affect the overall tension and require replacement before further use.
Step 5: Check the Track Adjuster
The track adjuster is a critical component that regulates the tension of the tracks. Locate the adjuster bolt on the side of the undercarriage, which can usually be found near the front of the track roller. On the TL140, this is often a grease-filled chamber that is used to adjust the track tension. Inspect the adjuster for leaks or damage, and ensure the grease is properly filled.
How to Adjust the Crawler Tension
If you find that the track tension is off, it can be adjusted using the track adjuster. Follow these steps to make the adjustment:
Step 1: Loosen the Lock Nut
The first step in adjusting the crawler tension is to loosen the lock nut on the track adjuster. This allows the adjuster bolt to be turned and makes it easier to change the tension.
Step 2: Adjust the Track Tension
Use a wrench or suitable tool to turn the adjuster bolt. To tighten the tracks, turn the bolt clockwise. To loosen the tracks, turn the bolt counterclockwise. Small adjustments are recommended—making large changes at once can lead to over-tightening or over-loosening the tracks, which can lead to damage.
Step 3: Check the Tension Again
After making the adjustment, recheck the tension to ensure it falls within the correct range. Check the track deflection once again to confirm that it is within the recommended 1-1.5 inch range.
Step 4: Secure the Lock Nut
Once the proper tension is achieved, tighten the lock nut on the track adjuster to prevent it from moving during operation. This will keep the track tension stable.
Step 5: Inspect for Leaks
After adjustments are made, it’s important to check for any leaks from the track adjuster. If there is any grease leakage, the adjuster may need to be repaired or replaced to maintain proper track tension and hydraulic performance.
Common Issues and Troubleshooting
While adjusting crawler tension is typically a straightforward task, there are a few common issues that may arise:

• Track Slippage: If the tracks are still slipping after adjustment, it may indicate that the tracks are excessively worn or the undercarriage components, such as the rollers or sprockets, need to be replaced.
  
• Hydraulic Leaks: If the track adjuster is leaking hydraulic fluid or grease, it could indicate a damaged seal. This can lead to loss of pressure in the system, making it difficult to maintain the proper tension.
  
• Uneven Track Wear: Uneven track wear may be caused by improper tension or an issue with the track adjuster. Regular inspection of the undercarriage components and track alignment is essential to preventing this problem.
  

Conclusion
Inspecting and adjusting the crawler tension on the Takeuchi TL140 is a vital part of regular maintenance that ensures the tracks are functioning efficiently and that the machine can perform optimally. By following the outlined steps and checking both the track tension and the condition of the undercarriage components, you can avoid excessive wear, reduce downtime, and extend the lifespan of your machine. Routine maintenance like this not only keeps the tracks in good working order but also contributes to the overall performance, safety, and cost-effectiveness of the loader. Regularly inspecting the tracks ensures that the Takeuchi TL140 continues to work at its best, whether you're operating it on construction sites, landscaping projects, or in forestry applications.