As the summer harvest nears its end, it's time to prepare for the next season by performing a thorough reloading and maintenance operation on your combine harvester. Proper maintenance not only extends the life of the machine but also ensures optimal performance when the next harvest season arrives.
Start by thoroughly cleaning the machine. Open all inspection covers and remove any protective guards. Carefully clear out debris from the roller chamber, bridge transfer area, and other hard-to-reach spots. Take off the small jitter board, the bottom cover of the cleaning chamber, and clean both the inside and outside of the fan housing. Don’t forget to remove straw, weeds, mud, and other residues from the frame, engine exterior, and other parts. Once everything is cleaned, start the machine and let the working components run at high speed for 3–5 minutes to flush out any remaining material. Then rinse the exterior with water and restart the machine at high speed again to remove excess moisture.
Next, lubricate the machine according to the manufacturer’s guidelines. Refer to the lubrication chart, lubrication table, and diesel engine manual. After applying the appropriate lubricants, let the diesel engine idle at a low throttle for 5–10 minutes to ensure even distribution.
Maintaining the cutting knife is crucial for efficient harvesting. Remove and inspect the knife, cleaning away any dirt or residue. Check if the blade rivets are loose, if the blade is worn beyond acceptable limits, or if the tool bar is bent. Tighten any loose parts immediately, replace worn blades, and straighten deformed bars as needed. Reinstall the knife, ensuring the gap between blades is within 0.20 mm. Make sure the power rod moves smoothly without any resistance, and apply oil to prevent rust.
Inspect the threshing roller and replace any damaged or overweight threshing arches. Correct any lateral misalignment to maintain proper function.
Check all fasteners for tightness. Any loose bolts or nuts should be tightened promptly to avoid mechanical failure during future operations.
Examine the drive chains. Remove them, clean thoroughly, and check for cracks or wear. Replace any faulty chains immediately to prevent breakdowns.
For the drive belts, remove them and inspect for signs of wear, such as slippage, aging, or damage. Replace any defective belts. If the belts are still in good condition, clean them, dust with talcum powder, reinstall them, and adjust tension as required before the next harvest season.
Paint the exposed metal surfaces to protect against rust and corrosion. This step helps maintain the structural integrity of the machine over time.
Finally, adjust all snails and move the header and pull-out wheel to their lowest positions. Ensure the plunger rod is fully retracted into the cylinder for storage.
By following these steps, you’ll keep your combine harvester in excellent condition, ready for the next season’s work. Regular maintenance is key to maximizing efficiency and minimizing downtime.
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