1、 Daily maintenance (per shift/per day)

1. Cleaning and Inspection
   • Clean the surfaceAfter homework, remove debris such as grass and dirt from the outside of the gearbox to prevent blockage of the heat dissipation holes or corrosion of the casing.
   • Check fastenersConfirm that the fixing bolts, blade bolts, and other fasteners of the transmission box are not loose to avoid vibration causing component detachment.
   • Check the sealing performanceObserve whether there are oil stains on the outside of the transmission box. If oil leakage is found, check the oil seal or box joint in a timely manner.
2. Lubrication and maintenance
   • Bearing lubricationAdd lubricating grease (such as lithium based grease) to the bearings inside the transmission box to reduce wear and prevent rust.
   • chain lubricationIf the transmission case involves chain transmission, it is necessary to lubricate the chain with a brush dipped in engine oil daily to avoid chain looseness or breakage.
3. Running status monitoring
   • Abnormal noise and vibrationAfter starting, observe whether the gearbox makes metal friction sounds, clicking sounds, or high-frequency whistling sounds. If there are any abnormalities, stop the machine immediately for inspection.
   • temperature monitoringIf the temperature exceeds 60 ℃ (normally ≤ 60 ℃) when touching the outer shell of the transmission case by hand, check the amount of lubricating oil or heat dissipation.

2、 Regular maintenance (every 50-100 hours)

1. Change the engine oil
   • Oil inspectionCheck the gear oil level and quality every 50-100 hours. If the oil turns black, emulsified, or has too many impurities, replace it with new oil (recommended model such as GL-4 80W-90).
   • Oil seal replacementIf the oil seal ages, hardens, or cracks, it should be replaced and sealed with sealant (such as Loctite 515) in a timely manner.
2. Component inspection and replacement
   • Gears and bearingsDisassemble the transmission case and check whether the gear teeth are worn, broken, or corroded, whether the bearing balls are worn, and whether the cage is broken.
   • Chain and beltCheck the tension of the chain (deflection should be 2% of the center distance between the active and passive sprockets), and adjust or replace it if necessary; Check the tension of the belt to avoid aging or looseness.
3. Heat dissipation optimization
   • Clean the heat dissipation holesClear the grass debris outside the gearbox, ensure that the ventilation holes are unobstructed, and avoid poor heat dissipation that may cause high temperatures.
   • Reduce loadAvoid cutting too thick branches or working continuously for a long time to prevent malfunctions caused by excessive load.

3、 Long term storage and maintenance (seasonal discontinuation)

1. rust prevention treatment
   • Fill up with lubricating oilBefore long-term storage, fill the gearbox with lubricating oil to prevent rusting of internal metal components.
   • Apply rust inhibitorApply rust inhibitor to the external metal surface of the transmission case to prevent corrosion in humid environments.
2. storage environment
   • dry and well-ventilatedStore the gearbox in a dry and well ventilated room, avoiding direct sunlight or rain.
   • Elevated storageUse wooden blocks to support the gearbox, keeping the blades off the ground to prevent deformation.

4、 Fault warning and handling

1. Common faults and solutions
   • Transmission failureIf the blade does not rotate or the speed is abnormal, check whether the gears are worn, whether the belt/chain is broken, and replace the damaged parts in a timely manner.
   • Abnormal vibrationIf the equipment vibrates violently, check the gear mesh clearance, blade balance, and bearing status, adjust the gear clearance or calibrate the blade balance.
   • oil leakageIf there are oil stains on the outside of the transmission case, check whether the oil seal is aging, whether there are cracks in the case, replace the oil seal or weld the case.
2. Professional repair
   • If the internal gears, bearings, and other components of the transmission box are severely damaged, it is necessary to contact professional maintenance personnel to disassemble and repair them, in order to avoid expanding the fault due to self operation.