Troubleshooting Faults on Kobelco SK210LC Excavator

[MikePhua]

The Kobelco SK210LC is a reliable and powerful excavator, but like any piece of machinery, it may occasionally show fault codes or fail to perform as expected. When multiple faults appear on the diagnostic system, it can be difficult to determine the root cause. This article outlines common issues, how to troubleshoot the faults, and how to resolve them effectively.
Common Faults in the Kobelco SK210LC Excavator

1. Overview of Faults on the Kobelco SK210LC:
   • The Kobelco SK210LC, like many modern excavators, is equipped with an advanced diagnostic system that displays faults when something goes wrong. These faults can appear due to electrical, hydraulic, or mechanical issues.
     
   • Diagnostic System Role: The system is designed to provide fault codes to assist operators and technicians in identifying and addressing issues promptly.
     
2. Numerous Faults Indicated:
   • Several users have reported experiencing multiple faults simultaneously, which can be confusing. Common issues reported include problems with the engine, hydraulic systems, and electrical components.
     
   • Fault Codes: These codes may vary, but some common ones involve issues like overheating, pressure problems in hydraulic lines, electrical wiring faults, or sensor failures.
     

Troubleshooting the Faults

1. Check the Engine Fault Codes:
   • Many issues on the SK210LC are engine-related, such as overheating, fuel system errors, or issues with the engine control unit (ECU). When multiple faults occur, start by focusing on the engine diagnostic codes.
     
   • Steps to Take:
     • Check the coolant level and ensure the engine is not overheating.
       
     • Inspect the fuel system for blockages or leaks.
       
     • Check the air filters and fuel filters to ensure they are clean and functioning properly.
       
     • If the ECU shows faults related to the engine, it may require recalibration or resetting.
       
2. Inspect the Hydraulic System:
   • Hydraulic faults can trigger multiple codes, especially if there is a drop in pressure, a leak, or contamination in the hydraulic lines.
     
   • Common Hydraulic Issues:
     • Low hydraulic fluid levels or dirty fluid can affect the excavator’s performance.
       
     • Pressure sensor failures can result in inaccurate readings, triggering fault codes.
       
   • Solution:
     • Check hydraulic fluid levels and inspect for leaks in the hoses or connections.
       
     • Clean or replace the hydraulic filters.
       
     • If necessary, replace or calibrate hydraulic sensors.
       
3. Examine the Electrical Components:
   • Electrical issues such as faulty wiring, malfunctioning sensors, or damaged connectors can lead to multiple fault codes being displayed.
     
   • Steps to Diagnose Electrical Issues:
     • Check all wiring for visible signs of wear, corrosion, or damage.
       
     • Inspect sensor connections and verify their functionality with a multimeter.
       
     • Pay particular attention to the battery and alternator, as electrical faults can often stem from power supply issues.
       
   • Solution:
     • Repair any damaged wiring or replace faulty components.
       
     • Reset the system after repairing electrical faults to ensure proper system operation.
       
4. Performing a System Reset:
   • After addressing the underlying faults, it is crucial to reset the excavator’s diagnostic system. This can clear stored fault codes and allow the system to recalibrate for optimal performance.
     
   • Steps for Resetting:
     • Follow the manufacturer's instructions to reset the diagnostic system.
       
     • Clear any error codes using the appropriate tools or software.
       
     • Verify that the system is no longer showing any active faults.
       

Preventative Maintenance for the Kobelco SK210LC

1. Regular Inspections:
   • Regularly inspect the engine, hydraulic system, and electrical components to prevent issues before they escalate. Clean the air and fuel filters regularly, check fluid levels, and keep the excavator well-maintained.
     
2. Monitor Fault Codes:
   • Pay attention to any fault codes or warning lights that appear during operation. Early identification of issues can help prevent major breakdowns.
     
3. Service the Hydraulic System:
   • Ensure that the hydraulic system is flushed regularly and that the hydraulic fluid is clean. This prevents contamination that could cause multiple issues with the excavator’s performance.
     
4. Keep the Electrical System in Check:
   • Inspect and clean the battery and alternator terminals to prevent corrosion. Make sure wiring is in good condition to avoid electrical faults.
     

Conclusion
When multiple faults appear on the Kobelco SK210LC, it is essential to approach the problem systematically. Begin by checking engine-related faults, inspecting the hydraulic system, and examining the electrical components. By performing regular maintenance and addressing faults as they arise, you can keep the machine running smoothly and avoid costly repairs. Remember to follow manufacturer recommendations for troubleshooting and resetting the system, and always consult with a technician if necessary for complex issues.