Kubota KH-191 Excavator Track Issues: Troubleshooting and Solutions

[MikePhua]

The Kubota KH-191 Excavator, a reliable and efficient mini excavator, is commonly used in construction, landscaping, and various small-scale projects. However, like all heavy equipment, prolonged usage can lead to several track-related issues. Tracks are a crucial part of an excavator, affecting the machine's stability and operational efficiency. This article will explore common track problems with the Kubota KH-191 Excavator and provide potential solutions.
Common Track Issues and Solutions

1. Loose Tracks
   Loose tracks are one of the most common issues encountered during the operation of the Kubota KH-191. When tracks are too loose, it can decrease the machine's stability, increase wear on other components, and result in jerky operations.
   • Cause: Loose tracks are typically caused by a loose track tension system or insufficient hydraulic pressure in the track tensioner. Extended use without proper maintenance can exacerbate this issue.
     
   • Solution: Regularly inspect the track tension system and adjust it according to the manufacturer’s specifications. If the tensioning device is damaged or excessively worn, it should be replaced.
     
2. Track Wear
   Extended use, especially on hard surfaces or rough terrain, can lead to significant track wear. Worn tracks not only affect the machine’s performance but may also lead to track breakage and other severe issues.
   • Cause: Track wear occurs due to rough ground conditions, overloading, or inadequate maintenance. Tracks are more prone to wear when operating on soft ground such as mud or sand.
     
   • Solution: Frequently inspect the track surface, particularly the outer edges and contact areas. If excessive wear or cracks are found, the tracks should be replaced. For better durability, consider using tracks with higher wear resistance.
     
3. Track Jamming
   Track jamming is a situation where the track fails to move smoothly, often leading to halted operations. This issue usually occurs when there is a malfunction in the track's internal components or in the track drive system.
   • Cause: Track jamming is typically caused by malfunctions in the drive system, including the rollers, sprockets, or idlers. Blockages or debris in the system can also lead to jamming.
     
   • Solution: Inspect the drive system, including rollers, sprockets, and idlers, and ensure they are free from debris. If any parts are damaged, replace them immediately. Regular lubrication is essential to prevent jamming.
     
4. Track Breakage
   Track breakage is a severe issue that typically results in downtime and costly repairs. It occurs when the tracks suffer significant damage, making them incapable of supporting the machine's weight and movements.
   • Cause: Track breakage often results from prolonged excessive wear or impact with hard obstacles. High-pressure operation or collisions with rocks or debris can cause the tracks to crack or break.
     
   • Solution: Ensure that the machine undergoes regular maintenance checks to prevent excessive wear. Avoid overloading the excavator and refrain from operating it on overly rough terrain that could cause track breakage. If the tracks are cracked or severely damaged, replace them immediately.
     
5. Track Drive System Failures
   The track drive system is the core mechanism responsible for the operation of the excavator's tracks. If it fails, the tracks will not function correctly, leading to severe performance issues.
   • Cause: Failures in the drive system are usually due to issues with the hydraulic system, motor malfunction, or damage to the drive components.
     
   • Solution: Regularly check the hydraulic system and motor for any signs of malfunction or damage. Ensure that the system is properly lubricated and that the drive components are free from damage. If any part is faulty, it should be repaired or replaced promptly.
     

Track Maintenance Tips

• Regularly Check and Adjust Track Tension: Track tension that is either too loose or too tight can affect the stability and functionality of the excavator. Regularly check and adjust the tension according to the manufacturer’s specifications.
  
• Clean the Tracks and Drive System: When working in muddy or sandy conditions, debris can accumulate in the tracks and drive system. Clean these parts regularly to ensure smooth operation and prevent damage.
  
• Inspect and Lubricate Components: Ensure that all track components, including rollers, sprockets, and idlers, are well-lubricated and in good working condition to minimize wear and prevent jamming.
  
• Avoid Overloading: Overloading the excavator can cause excessive wear on the tracks and the drive system. Always adhere to the recommended load limits to extend the lifespan of the equipment.
  

Conclusion
Track-related issues in the Kubota KH-191 Excavator, while common, can be managed with proper maintenance and timely interventions. Understanding the causes of common track problems and taking proactive measures can significantly extend the lifespan of the tracks and improve the machine’s overall performance. If any issues arise, it’s essential to quickly identify and resolve them to keep the excavator operating efficiently. For more complex issues, it's recommended to consult a professional technician. Regular maintenance and care are key to ensuring the smooth operation of your excavator and minimizing costly repairs.