# 5 Key Steps to Extend the Service Life of a Wheel Loader

As the core power source of construction machinery, the health of the engine directly determines the service life and working efficiency of the wheel loader. Drawing on years of industry experience, Changjian Heavy Machinery has summarized the following five key maintenance steps to help you easily extend equipment life and reduce maintenance costs. 1. Regularly change engine oil and filters Engine oil is the "blood" of the engine and must be changed strictly according to schedule: Replacement interval: every 200 hours or once per quarter; shorten to 150 hours under harsh working conditions. Key points: Use the oil type recommended by the original manufacturer, and replace the oil filter at the same time to ensure that impurities and metal particles are effectively filtered out. 2. In-depth maintenance of the air filter Dust is the "invisible killer" of the engine, and cleaning the air filter is essential: Inspection frequency: clean the filter element every 50 hours; when dust accumulation exceeds 50%, clean or replace it immediately. Cleaning method: backflush with tap water or low-pressure air, and avoid cleaning methods that damage the filter paper structure. Extreme environments: in dusty areas such as mines and quarries, it is recommended to install a pre-filter device. 3. Fine maintenance of the fuel system Fuel quality directly affects engine performance and emissions: Filter replacement: replace the fuel filter every 200 hours to prevent impurities from clogging the injector nozzles. Fuel tank management: drain accumulated water from the water separator before daily operation to prevent water from mixing into the fuel. Fuel selection: use national-standard diesel, and switch to low-pour-point fuel in winter (such as -10# diesel) to prevent diesel waxing. 4. Cooling system maintenance Engine overheating accelerates component aging, so the cooling system requires special attention: Coolant management: replace antifreeze every 2,000 hours or every six months; the freezing point must suit the local minimum temperature (recommended -25°C or lower in winter). Radiator cleaning: clean dust accumulated in the radiator monthly to avoid airflow blockage that triggers high-temperature alarms. Water pump inspection: check the water pump seal every 500 hours to prevent water leakage that leads to insufficient coolant. 5. Ignition system and daily work practices From operating habits to parts maintenance, ensure stable engine operation in all respects: Ignition system inspection: clean the spark plug every 200 hours and adjust the electrode gap to 0.7-0.9 mm to ensure ignition efficiency. Standardized operation: avoid prolonged overload operation, and stop immediately to cool down when the dashboard water temperature exceeds 95°C. Seasonal adjustments: install a preheating device in winter and regularly clean the air-conditioning condenser in summer to adapt to environmental needs. Summary from Laizhou Changjian Machinery: Establish a maintenance record sheet to track the time and content of each maintenance session and achieve preventive management. Regularly entrust professional institutions to test exhaust gas and cylinder pressure to detect hidden faults in advance. Through the systematic maintenance of the above 5 steps, your wheel loader engine will continue to run efficiently, and its service life can be extended by more than 30%! Welcome to follow Laizhou Changjian Machinery to learn more equipment maintenance tips.