CAT 259 Compact Track Loader Common Issues and Troubleshooting Guide

[MikePhua]

The CAT 259 is a powerful compact track loader, widely used in construction, landscaping, and agricultural sectors. Despite its exceptional performance, some users may encounter issues while operating the machine. This article summarizes common issues with the CAT 259 and provides solutions to help users better understand and troubleshoot problems.
Common Issues

1. Engine Starting Difficulties
   If the CAT 259 fails to start, the issue could be due to insufficient battery power, a faulty starter motor, or fuel system problems. Check the battery voltage to ensure it's sufficient, and verify that there are no blockages or air in the fuel system.
   
2. Hydraulic System Failure
   A failure in the hydraulic system can lead to the bucket or other attachments not functioning properly. Common causes include low hydraulic oil, a faulty hydraulic pump, or leaks in the hydraulic lines. Check the oil level and quality, and inspect the lines for any leaks.
   
3. Track Tension Issues
   Improper track tension can lead to increased wear on the tracks or unstable operation. Tracks should be properly tensioned—too loose or too tight will affect machine performance.
   
4. Overheating Issues
   If the machine is overheating during operation, the issue may be with the cooling system, low coolant levels, or a clogged cooling system. Inspect the radiator and coolant system, ensuring that the radiator is not blocked, and the coolant is at the proper level.
   
5. Control System Issues
   Some users may experience unresponsive or sluggish controls. This could be due to issues with the electronic control unit (ECU) or sensors. Check the electronic systems and reset or update the ECU if necessary.
   

Solutions

1. Engine Starting Issues
   • Check the battery voltage to ensure it's fully charged and in good condition.
     
   • Inspect the starter motor's wiring connections for any loose or corroded contacts.
     
   • Check the fuel system to ensure the fuel pump is working correctly and the fuel filter is not clogged.
     
2. Hydraulic System Failure
   • Ensure the hydraulic oil level is sufficient and there are no leaks.
     
   • Inspect the hydraulic pump for proper operation.
     
   • Check the hydraulic lines for any leaks or damage.
     
3. Track Tension Adjustment
   • Inspect the track tension to ensure it is set correctly—not too loose or too tight.
     
   • Adjust the track tensioner according to the manufacturer's guidelines to ensure stable operation.
     
4. Overheating Troubleshooting
   • Inspect the cooling system and ensure the radiator is not clogged. Check for dust or dirt buildup that may be blocking airflow.
     
   • Ensure that the coolant level is sufficient and top it up if needed.
     
5. Control System Troubleshooting
   • Inspect the control panel and ensure all buttons and levers are functioning correctly.
     
   • Use diagnostic tools to check the ECU for any errors.
     
   • If necessary, reset or reprogram the ECU to ensure it is operating correctly.
     

Conclusion
The CAT 259 compact track loader is an outstanding machine, but, like all heavy equipment, it can experience various issues over time. Regular maintenance and inspections of key components like the battery, hydraulic system, tracks, and cooling system can help prevent many common problems. Performing routine maintenance not only enhances the machine's performance but also extends its service life. If you encounter problems that cannot be resolved on your own, it's advisable to consult a professional technician to get the machine back to working condition.