Used Komatsu Excavators Repair & Maintenance is a critical process to ensure the machine operates smoothly, extends its lifespan, and reduces downtime. Regular maintenance and timely repairs help minimize operational interruptions, avoid high repair costs, and improve overall productivity.
Here’s an overview of common repair and maintenance tasks for Komatsu excavators:
1. Common Repair Issues
Hydraulic System Failures: The hydraulic system is one of the most critical parts of an excavator. Hydraulic pump failures, oil leaks, and issues with cylinders are common, especially after long periods of heavy use. Hydraulic pressure instability or oil leakage can also occur.
（1）Engine Problems: Issues such as hard starting, power loss, overheating, or poor emissions can occur. These may be caused by fuel system blockages, clogged air filters, or coolant system failures.
（2）Undercarriage and Travel System Failures: Problems such as loose tracks, excessive wear, or issues with the travel mechanism are also common. Tracks are particularly prone to wear and tear in harsh working conditions.
（3）Electrical System Failures: Battery problems, issues with the alternator, control circuit board, or sensors can lead to difficulties starting the excavator or operational malfunctions.
2. Daily Maintenance
Regular checks and maintenance are essential to keep the used original Komatsu excavator in optimal working condition. Common daily maintenance tasks include:
（1）Check Hydraulic Oil and Change Fluids: Hydraulic oil is crucial for the hydraulic system. Regularly check the oil level and quality, and change it when necessary. Using poor-quality oil can accelerate the wear and tear of the hydraulic system.
（2）Change Engine Oil and Filters: Engine oil and filters should be replaced regularly to ensure proper lubrication and cleanliness of the engine. The change interval depends on operating hours and conditions.
（3）Check and Clean Air Filters: The air filter prevents dust and debris from entering the engine. Regularly check and clean the filter, and replace it when needed to ensure optimal airflow and engine performance.
（4）Check the Cooling System: Make sure the radiator and coolant system are free from leaks. Regularly check the coolant level to maintain proper cooling performance.
（5）Check Battery and Electrical System: Regularly inspect the battery’s charge and voltage, clean the terminal connections, and ensure that the electrical system is functioning properly.
3. Periodic Maintenance Checks
Comprehensive checks and regular servicing help detect potential problems early, preventing unexpected breakdowns. Common periodic maintenance tasks include:
（1）Check and Adjust Track Tension: The track system must maintain proper tension to ensure smooth travel and prevent excessive wear. Regularly check the tracks and drive wheels, and adjust or replace them when needed.
（2）Inspect Hydraulic System: Check the hydraulic hoses, fittings, pumps, and cylinders for leaks, wear, or damage. Regularly inspect the oil quality and oil level.
Change Fuel Filters: Clean fuel is critical for engine performance. Regularly change the fuel filters to prevent clogs and potential engine damage.
（3）Inspect Hydraulic Oil Coolers: The hydraulic oil cooler helps maintain optimal oil temperature. Regularly inspect the cooler to ensure it’s not clogged or damaged.
（4）Check Engine Coolant Temperature: Ensure that the coolant temperature is within the normal operating range. Overheating or inadequate cooling can lead to engine damage.
4. Tips to Extend Equipment Life
（1）Avoid Overloading: Overloading the excavator can accelerate the wear of mechanical components, especially the hydraulic system and engine.
（2）Proper Shutdown and Cleaning: After long working hours, ensure the second-hand excavator machine is properly shut down and cleaned, especially the exterior and interior, to prevent dust and dirt from affecting the system.
（3）Use Proper Fuel and Hydraulic Oils: Ensure that the fuel and hydraulic oils used meet Komatsu’s specifications. Avoid using substandard oils.
（4）Regular Inspections and Record-Keeping: Regularly record maintenance and repair activities to monitor the machine's condition and prevent unexpected failures.
Shanghai Yuqiang Construction Machinery Co., Ltd. focuses on the sales and service of second-hand excavator, and is committed to providing global customers with high quality and high efficiency second-hand excavator equipment. The company has many years of industry experience and professional technical team, committed to providing customers with one-stop solutions.