+- Excavator Forum (https://www.panswork.com)
+-- Forum: Diesel Power Talking (https://www.panswork.com/forum-1.html)
+--- Forum: Operator Talking (https://www.panswork.com/forum-44.html)
+--- Thread: PC130-6 Excavator Fault Codes and Diagnostic Solutions (/thread-6950.html)
PC130-6 Excavator Fault Codes and Diagnostic Solutions - MikePhua - 07-05-2025
The PC130-6 excavator, manufactured by Hitachi, is a widely used mid-sized machine in construction, earthmoving, and mining applications. Like many modern excavators, the PC130-6 is equipped with an electronic control system capable of diagnosing and reporting potential issues through fault codes. Understanding these fault codes and addressing them appropriately is essential for maintaining optimal performance and prolonging the machine's lifespan.
Common Fault Codes and Their Meanings
- Error Code 131 (Engine Overheating)
This error code indicates that the engine cooling system may be malfunctioning. Common causes include low coolant levels, a clogged radiator, a faulty water pump, or a failed temperature sensor. To resolve this issue, check the coolant level and quality, clean the radiator, and ensure the water pump is operating correctly.
- Error Code 132 (Hydraulic Oil Overheating)
Hydraulic oil overheating can cause a decrease in hydraulic system efficiency. This problem is usually caused by overfilled hydraulic oil, a dirty oil cooler, a faulty pump, or poor-quality hydraulic fluid. To fix this, check the hydraulic oil level and quality, clean the oil cooler, and inspect the hydraulic system's pressure.
- Error Code 133 (Insufficient Oil Pressure)
Low oil pressure is commonly caused by hydraulic system leaks or a malfunctioning hydraulic pump. Check for any leaks in the oil lines and ensure the hydraulic pump is delivering sufficient pressure. If necessary, replace the hydraulic pump or seals.
- Error Code 134 (Engine RPM Abnormal)
This fault code typically indicates that the engine RPM is either too high or too low. Inspect the throttle control system, the electronic control unit (ECU), and the engine RPM sensor to ensure everything is working correctly.
- Error Code 135 (Low Battery Voltage)
When the battery voltage is low, the electronic control system may fail to operate properly. This issue is typically caused by a low battery charge or a problem with the charging system. Check the battery voltage and confirm that the charging system (such as the alternator and charger) is functioning correctly.
- Use Diagnostic Tools to Read Fault Codes
Using professional diagnostic tools can quickly read the fault codes from the excavator, helping operators pinpoint the exact issue. Diagnostic tools provide the fault codes that help identify specific components or systems that need attention, saving time and reducing repair costs.
- Inspect the Hydraulic System
Hydraulic system issues are common in the PC130-6. If the error code points to high hydraulic oil temperature or low oil pressure, first check the quality and level of the hydraulic fluid and clean the oil cooler. If the pressure is still abnormal, inspect the hydraulic pump and oil lines to ensure there are no leaks.
- Inspect the Cooling System
For overheating engine issues, check the coolant level and ensure the radiator is clean. Also, inspect the temperature sensor and verify that the water pump and fan are functioning correctly.
- Inspect the Battery and Charging System
For low battery voltage issues, check the battery's charge level. If the battery is low, charge it. If the battery is fine, inspect the alternator and charger to ensure they are working correctly, allowing the battery to recharge.
- Regularly Check Hydraulic Oil and Cooling Systems
Regularly check the hydraulic oil's quality and level, and replace it when necessary to keep the hydraulic system operating smoothly. Also, monitor the cooling system to ensure the coolant is at the proper level and the radiator is clean, preventing engine overheating.
- Check the Battery and Charging System Periodically
Periodically inspect the battery for charge and voltage, ensuring the charging system works properly. If the battery cannot maintain a charge, consider replacing it. Check the alternator and charger to confirm they are functioning as expected.
- Address Fault Codes Promptly
When the equipment displays fault codes, use diagnostic tools to perform a detailed diagnosis and address the identified issues promptly. Timely repairs can prevent small problems from escalating into larger, more expensive failures.
The fault code system in the PC130-6 excavator provides operators with an efficient method of diagnosing and addressing machine issues. By understanding common fault codes and their associated problems, operators can quickly identify issues and take corrective actions. Regular equipment inspections and prompt fault resolution not only extend the life of the machine but also improve overall work efficiency.