Kobelco Track Issues: Troubleshooting and Solutions

[MikePhua]

Introduction: The Importance of Track Systems on Excavators
Track systems are integral to the performance and maneuverability of excavators, including those from Kobelco, one of the leading brands in the heavy equipment industry. The track system not only supports the weight of the machine but also provides traction, stability, and mobility across different terrains. When issues arise with the track system, it can severely affect the machine’s productivity and operational safety.
In this guide, we will explore the common problems that can occur with Kobelco excavator tracks, the causes behind them, and how to troubleshoot and resolve these issues. Whether you're dealing with wear and tear, alignment problems, or track tension issues, understanding the root causes and knowing how to fix them is essential for maintaining smooth and efficient operation.
Common Kobelco Track Problems

1. Uneven Track Wear
   

Uneven wear on tracks is a common issue that can be caused by various factors, such as incorrect track tension, misalignment, or worn-out undercarriage components. Uneven wear not only reduces the lifespan of the tracks but also affects the stability of the machine.

• Symptoms: One side of the track shows more wear than the other, or the track appears to be “bowing” or “tilting” as it moves.
  
• Possible Causes:
  • Incorrect Track Tension: If the tracks are too tight or too loose, they will wear unevenly. Over-tightening can increase friction, while under-tightening can cause slippage.
    
  • Misalignment: If the track is not properly aligned on the sprockets or rollers, it can cause the track to wear unevenly. This can be due to damaged or worn-out sprockets, rollers, or idlers.
    
  • Worn-out Undercarriage: As the undercarriage components, including rollers and sprockets, wear out, they can affect the track’s movement, leading to uneven wear.
    
• Solution:
  • Check Track Tension: Refer to the manufacturer’s specifications for the correct track tension and adjust accordingly. Tighten or loosen the track as needed to ensure it operates smoothly.
    
  • Inspect Undercarriage Components: Check the sprockets, rollers, and idlers for signs of wear or damage. If any components are excessively worn, replace them to restore proper track alignment.
    
  • Regular Maintenance: Perform regular inspections to ensure that the track is aligned properly and that the tension is set correctly.
    

1. Track Slippage
   

Track slippage occurs when the tracks fail to grip the ground properly, leading to a loss of traction. This can significantly reduce the excavator’s ability to move efficiently, especially in challenging conditions like muddy, sandy, or uneven terrain.

• Symptoms: The machine struggles to move forward or backward, even though the engine is running normally. You may notice the tracks slipping when the machine is under load or on steep inclines.
  
• Possible Causes:
  • Worn Tracks: Over time, the rubber or steel links on the tracks can wear down, reducing the surface area in contact with the ground and causing slippage.
    
  • Improper Track Tension: Both over-tight and under-tight tracks can contribute to slippage. If the track is too tight, it can increase friction and reduce movement. If it’s too loose, it may not make proper contact with the ground, leading to slipping.
    
  • Dirty or Icy Conditions: Mud, ice, or snow can accumulate in the track links, reducing traction and causing the tracks to slip.
    
• Solution:
  • Replace Worn Tracks: If the tracks are excessively worn or damaged, they should be replaced. Ensure that new tracks are compatible with your Kobelco model.
    
  • Adjust Track Tension: Recheck the track tension and adjust it to the correct level based on the manufacturer’s recommendations.
    
  • Clean the Tracks: Regularly clean the tracks to remove mud, snow, or debris that can impair traction. If operating in extreme conditions, consider using track shoes or pads that provide better grip.
    

1. Track Tension Issues
   

Track tension plays a crucial role in the performance and longevity of an excavator. Both over-tight and under-tight tracks can cause a variety of issues, including track wear, excessive friction, and poor machine performance.

• Symptoms:
  • Under-tight tracks: If the tracks are too loose, they may slip or make excessive noise, and the machine may experience difficulty moving or turning.
    
  • Over-tight tracks: Tracks that are too tight can cause excessive wear on the undercarriage components, leading to increased friction and overheating.
    
• Possible Causes:
  • Environmental Factors: Operating in extreme conditions (muddy, rocky, or cold environments) can cause changes in the track’s natural tension, requiring periodic adjustments.
    
  • Incorrect Initial Tensioning: If the tracks were not properly tensioned during installation or maintenance, they can result in performance issues.
    
  • Hydraulic Issues: For excavators with hydraulic track adjusters, problems such as fluid leaks or pressure loss can lead to incorrect track tension.
    
• Solution:
  • Check and Adjust Tension: Use a tension gauge to check the track tension. If the tracks are too tight or too loose, adjust them according to the manufacturer’s specifications. Typically, there should be a specific amount of slack or deflection when the track is under load.
    
  • Inspect Hydraulic Track Adjusters: If your Kobelco excavator uses hydraulic track adjusters, inspect them for leaks or pressure issues. If there’s a hydraulic failure, the adjuster will need to be repaired or replaced.
    

1. Track Misalignment
   

Misalignment of the track system is a common issue in excavators, particularly as they age. Misaligned tracks can lead to excessive wear, reduced efficiency, and even damage to the machine’s undercarriage components.

• Symptoms: The tracks may appear to be off-center or skewed, and you may notice uneven wear on the track or sprockets. The machine may also pull to one side when driving.
  
• Possible Causes:
  • Worn Sprockets or Rollers: Misalignment can occur if the sprockets, rollers, or idlers become worn out or damaged. These parts help guide the track, and any wear or damage can cause the track to shift off-center.
    
  • Improper Installation: If the tracks were not installed correctly, they could become misaligned over time.
    
  • Dirt or Debris: Dirt, mud, or other debris stuck in the track or sprockets can interfere with the track's alignment.
    
• Solution:
  • Inspect Sprockets and Rollers: Check for wear or damage in the sprockets, rollers, and idlers. If these parts are damaged, they should be replaced to restore proper alignment.
    
  • Clean the Track System: Regularly clean the tracks and sprockets to remove any debris that could affect their alignment.
    
  • Reinstall Tracks: If the tracks are misaligned due to improper installation, they should be removed and reinstalled correctly.
    

1. Track Tensioning System Failure
   

The track tensioning system, especially in hydraulic track adjuster-equipped machines, plays a critical role in maintaining proper track tension. A failure in this system can result in either too tight or too loose tracks, both of which can cause significant issues.

• Symptoms: Inconsistent or improper track tension, hydraulic fluid leaks, or the inability to adjust track tension properly.
  
• Possible Causes:
  • Hydraulic Leaks: Leaks in the track tensioning system can lead to loss of pressure, which prevents the tracks from being adjusted properly.
    
  • Damaged Track Adjusters: The track adjusters themselves may wear out or become damaged over time, leading to malfunctioning or ineffective tensioning.
    
• Solution:
  • Inspect and Replace Adjusters: Inspect the hydraulic adjusters for leaks or damage. If the adjusters are worn or malfunctioning, they may need to be replaced.
    
  • Check Hydraulic System: Inspect the hydraulic lines and connections for leaks, and ensure that the hydraulic system is functioning properly.
    

Preventative Maintenance Tips for Kobelco Tracks

1. Regular Inspection: Inspect tracks, sprockets, rollers, and idlers regularly for signs of wear or damage. Timely detection of problems can prevent costly repairs.
   
2. Proper Track Tension: Ensure that track tension is correctly adjusted to avoid premature wear or damage. Adjust the tracks according to the manufacturer’s specifications.
   
3. Track Cleaning: Clean the tracks periodically to remove dirt, mud, and debris that can impact performance and alignment.
   
4. Lubrication: Properly lubricate the undercarriage components to reduce friction and wear.
   

Conclusion: Keeping Your Kobelco Excavator in Top Shape
Track issues can be a significant concern for excavator operators, but understanding the common problems and how to address them can save both time and money. By staying on top of routine maintenance, adjusting track tension properly, and replacing worn-out components as needed, you can ensure that your Kobelco excavator continues to perform optimally and remains reliable for many years.
Regular inspection and prompt attention to any track-related issues are essential for maintaining the longevity of your equipment and ensuring maximum productivity on the jobsite.