Lubrication requirements:

　　1. Clean the inside of the reducer and replace the high-temperature butter (maintenance once every 500 hours in total);

　　2. Keep the three pin shafts of the brake foot clean and add oil or grease (not less than once per shift);

　　3. Clean the rigid clutch and add oil (to ensure good lubrication);

　　4. Keep the friction parts of the bracket clean and add butter;

　　5. Add butter to each bearing.