The excellent performance of the excavator engine, as the core component, is the key to the normal operation of the excavator. The following are the maintenance methods for each engine component on the excavator:
Air filter
Regular cleaning and replacement: Every 50-100 hours of operation, the air filter element should be removed and the dust on the surface of the filter element should be blown out with compressed air from the inside out. Every 200-300 hours of work, the air filter element should be replaced. If the working environment is harsh, such as high dust, the replacement cycle should be shortened.
Check installation seal: When installing the air filter, ensure that the filter is tightly connected to the engine intake pipe without any air leakage. Otherwise, unfiltered air entering the engine will accelerate engine wear.
Oil filter
Timely replacement: Generally, the oil filter needs to be replaced every 200-250 hours of operation. When replacing, use genuine filters that meet the requirements of the engine to ensure the filtering effect.
Check sealing performance: When installing the oil filter, apply an appropriate amount of oil to the filter sealing ring, and then use a special tool to tighten the filter to the specified torque to prevent oil leakage.
Fuel filter
Regular maintenance: Every 200-300 hours of operation, the fuel filter needs to be drained and drained. The fuel filter element should be replaced every 500-1000 working hours.
Ensure fuel quality: Use clean fuel that meets engine requirements to avoid filter clogging and engine failure caused by poor quality fuel.
Engine oil
Regular replacement: Depending on the usage of the engine and the quality of the oil, it is generally necessary to replace the oil every 200-250 hours of operation or every 3-6 months. When changing the oil, the oil filter should be replaced at the same time.
Check the oil level: Before starting or 10-15 minutes after stopping the engine, check the oil level and keep it between the upper and lower marks on the dipstick.
Choose the appropriate engine oil: Based on the engine model and usage environment, choose the appropriate viscosity and quality grade of engine oil. For example, in cold regions, choose engine oil with good low-temperature fluidity.
Cooling fluid
Regular inspection and replacement: Every 200-300 hours of operation, check the coolant level and keep it between the upper and lower markings of the cooling water tank. The coolant needs to be replaced every 1000-1500 working hours or annually.
Choose the appropriate coolant: According to the requirements of the engine, choose a coolant with the appropriate freezing and boiling points. Generally, ethylene glycol type coolant can be used.
Prevent coolant leakage: Regularly inspect the water pipes, joints, radiators, and other components of the cooling system to ensure that there are no leaks. If leaks are found, they should be repaired in a timely manner.
Fan belt
Check and adjust tension: Every 100-150 hours of operation, check the tension of the fan belt. Generally, press the middle of the belt with your fingers, and the belt should sink between 10-15 millimeters. If the belt is too loose or too tight, it should be adjusted in a timely manner.
Check belt wear: Regularly inspect the surface wear of the fan belt. If cracks, severe wear, or slippage are found on the belt surface, the belt should be replaced in a timely manner.
Spark plug (for gasoline engines)
Regular inspection and replacement: Every 200-300 hours of operation, check the electrode gap and carbon deposition of the spark plug. The electrode gap should generally be between 0.6-0.8 millimeters. Spark plugs should be replaced every 1000-1500 working hours.
Choose the appropriate spark plug: Based on the engine model and compression ratio, select the spark plug with the appropriate calorific value and model to ensure normal ignition and combustion of the engine.
Fuel injector (for diesel engines)
Regular cleaning: Every 500-1000 hours of work, use professional fuel injector cleaning agents to clean the fuel injectors to prevent clogging and affect the fuel injection efficiency of the engine.
Check fuel injection pressure: Regularly check the fuel injection pressure of the fuel injector to ensure that it meets the requirements of the engine. If the fuel injection pressure is abnormal, the fuel injector should be adjusted or replaced in a timely manner.
Turbocharger
Check lubrication and cooling: Regularly check whether the lubricating oil pipe and coolant pipe of the turbocharger are firmly connected and have no leakage. Ensure that the turbocharger has good lubrication and cooling conditions.
Avoid sudden acceleration and deceleration: When operating an excavator, avoid sudden acceleration and deceleration to prevent damage to the turbocharger due to rapid changes in speed.
Regular component inspection: Every 500-1000 hours of operation, check the impeller, bearings, and other components of the turbocharger for wear, looseness, and other abnormal conditions. If there are any problems, replace the components in a timely manner.
By carefully maintaining the various components of the excavator engine, the service life of the engine can be effectively extended, the performance and reliability of the engine can be improved, and the normal operation of the excavator can be ensured.
