1.Pre-startup operation
After inserting the key, release the main clutch first. Preheat for 3 to 5 minutes before starting the tractor or excavator(especially after a long period of parking).
After startup, conduct a no-load test run to check if the implement's lifting, rotating and other actions are flexible and if the instrument parameters are normal.
2.Special treatment after long-term parking
Comprehensive inspection: Replace the fuel and hydraulic oil of the tractor or excavator that may have deteriorated, and check the rubber parts (such as seals) for aging.
Re-inspection after startup: Pay close attention to the oil temperature, water temperature and the operating condition of the hydraulic system to ensure there is no abnormal vibration or noise.
1. Basic Maintenance and Lubrication Management
Replace the oil and filter element regularly
Tractor: Regularly change the engine oil, hydraulic oil and coolant to prevent oil contamination from causing wear on the engine and hydraulic system parts.
Excavator: Keep the hydraulic oil clean, replace the filter in time to prevent impurities from entering precision components (such as hydraulic pumps and valve bodies).
General: All lubrication points (such as bearings and pins) need to be lubricated with grease at regular intervals to reduce friction losses.
Fastening and adjusting
Tractor: Regularly inspect the hub bolts, steering devices and front wheel alignment to prevent loosening and deformation of the traveling components.
For excavator: Reinforce the bolts of the track plates, the installation bolts of the support wheels, etc., to prevent loosening from causing track breakage or wear of the rail chain links.
2. Operating Norms and Load Control
Operate smoothly
Tractor: Avoid sudden acceleration and braking. Drive at a low speed during field operations to reduce the impact on the transmission system.
Excavator: Reduce turning on inclined ground, choose straight travel and large turns, and reduce the side wear of the rail chain links and drive wheels.
Reasonable load
General: Overloading operation is strictly prohibited. Long-term high-load operation will accelerate the fatigue wear of parts (such as engine crankshafts and hydraulic cylinders).
Excavator: Adjust the bucket entry depth according to the soil quality and working conditions to avoid excessive squeezing causing the bucket teeth to break.
3.Environmental and Corrosion Protection
Dust and clean
Tractor: Regularly clean the radiator and air filter to prevent sand and dust from entering the engine and causing cylinder wear.
Excavator: After operation, clean the chassis and traveling parts to prevent the accumulation of mud and sand from accelerating the rusting of the track plates.
Anti-corrosion measures
General: Avoid long-term immersion of equipment in water (especially in salt-containing environments), regularly inspect the coating status of metal parts, and repaint in a timely manner.
Tractor: Cover exposed parts when parked to reduce rainwater erosion.
4. Special Working Condition Handling
High and low temperature management
General: Control the temperature of the engine and hydraulic system through coolant and lubricating oil to prevent the oil film from breaking due to high temperature or the decrease in fluidity at low temperature.
Excavator: Preheat the hydraulic oil before starting in winter. In summer, avoid prolonged exposure to the sun to prevent the rubber seals from aging.
Repair in tim
Tractor: When abnormal vibration or noise is detected, stop the tractor immediately for inspection to prevent minor malfunctions from evolving into part damage.
Excavator: If the sprocket or idler wheel gets stuck, it should be repaired in time to avoid grinding the rail chain link.
Key precautions
Lubrication priority : Insufficient lubrication is the main cause of wear. Special grease (such as high-temperature grease) should be selected as per the instructions.
Replacement cycle of accessories : Wear parts (such as tractor belts, excavator bucket teeth) should be inspected regularly and replaced immediately when wear exceeds the limit.
Environmental protection requirements : Waste oil, filter elements and other contaminants must be professionally recycled. Random disposal is prohibited.
The above measures can significantly extend the service life of the construction and agricultural machinery and reduce maintenance costs.
1. Park the tractor or excavator to a horizontal position, then turn off the engine and let it stand for more than one hour.
2.Drain the old engine oil
Drain operation
Locate the oil drain screw of the oil pan at the bottom of the engine, then place the oil collection basin below, then slowly loosen the screw with a wrench to ensure that the old engine oil is completely drained.
Disassemble the oil filter: Use a special tool to unscrew the old filter. Be careful that the residual oil may flow out. Use an oil collection basin to catch it.
Use an air gun to blow and clean the oil drain port and the filter interface to ensure that all residual oil is removed completely.
3. Install the new filter and seal
Filter treatment
Apply a small amount of new engine oil evenly on the sealing ring of the new filter to enhance the sealing performance.
Manually tighten the new filter (avoid deformation caused by excessive force), and then use a tool to reinforce it by half a circle.
Reinstall the oil drain screw and replace the gasket. After tightening, wipe off the oil stains around.
4. Add new engine oil
Oil level control
Open the oil filling port, use the funnel to slowly pour in the new oil, and measure the liquid level multiple times with the oil dipstick to ensure it is between the upper and lower limits.
For some models, the engine needs to be started and run for 1 to 2 minutes. After turning off the engine again, check the oil level and add engine oil if necessary.
5. Post-startup inspection
Run verify
Start the engine and let it idle for 5 to 10 minutes. Observe whether the oil pressure indicator light on the dashboard goes off and check if there is any leakage at the oil drain screw and the filter interface.
Listen to the sound of the engine running and make sure there is no abnormal noise or vibration.
6.Precautions
Suggested replacement cycle
Under normal working conditions, the engine oil of the tractor or excavator should be replaced every 200 to 300 hours or every half a year. If working at high load for a long time, the cycle needs to be shortened.
Filter replacement
Each time the oil is changed, the filter must be replaced to prevent impurities from the old filter element from contaminating the new engine oil.
