Rammer Maintenance

• Maintenance of diesel engines for pile drivers

  Dec 27, 2024

  The following engine maintenance knowledge takes the Yuchai 91Kw four-cylinder turbocharged diesel engine commonly used by our pile driver manufacturers on solar pile drivers as an example: Daily maintenance Check the oil: Check the oil, coolant and fuel levels before starting the machine every day to see if they are within the normal range. If they are insufficient, add them in time. Appearance cleaning: Open the hood at the rear end of the pile driver and wipe the oil and dust on the engine surface with a rag frequently to keep the engine appearance clean, so as to find out if there are any abnormalities such as leakage in time. Check the belt: Check the tension and appearance of the engine belt regularly to see if there are any abnormalities such as cracks and wear. If any problems are found, adjust or replace them in time.   First-level maintenance (performed after 100 cumulative working hours) Replace the engine oil and clean the crankcase: Replace all the engine oil in the crankcase and clean the crankcase with diesel. Drain the oil and clean the crankcase after the machine is warm so that the impurities in the engine oil can be discharged better.Generally, the engine oil can be filled to the middle of the yellow area at the end of the dipstick.During the running-in period of the pile driver, a lot of metal debris and other impurities will be produced, which need to be cleaned up.     Clean the air filter: Open the air filter, remove the filter element, and remove the dust and dirt on the filter element. If the filter element is damaged, replace it immediately.Note: The air filter element cannot be rinsed with water. Dust and dirt can only be blown away with a high-pressure airflow. If water is used for rinsing, the air filter element will be damaged. Check the diesel filter: After 200 cumulative hours of operation, remove the diesel filter element and clean it with clean diesel. If the filter element is damaged, replace it immediately. Secondary maintenance (performed after 500 cumulative working hours) Check and adjust valve clearance: Check and adjust the clearance of intake and exhaust valves to ensure the normal opening and closing of valves and the normal intake and exhaust of the engine. Injector maintenance: Check the injection of injectors, clean the injectors and correct the injection pressure to ensure the normal injection atomization effect of the injectors and improve the combustion efficiency. Check valve seal: Check the sealing of valves and valve seats, and grind and correct them if necessary to prevent valve leakage and affect engine performance. Check fasteners: Check the fastening and anti-loosening of cylinder head nuts, connecting rod nuts, and flywheel nuts to ensure that all components are firmly connected. Piston connecting rod assembly inspection: Take out the piston connecting rod assembly, check the piston ring opening clearance, clean and remove carbon deposits in various places on the piston head and piston ring groove. Check crankshaft oil seal: Check the crankshaft oil seal. If hardening or lip damage is found, it should be replaced. Wear measurement: For every 1000 cumulative working hours, the following maintenance items need to be added: Check and measure the wear and clearance of the cylinder liner and piston; check and measure the wear and clearance of the crankshaft connecting rod journal and connecting rod bearing; check the wear and clearance of the valve rocker arm and rocker arm shaft, valve and valve guide hole.  

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