1、Maintenance of motor and reducer
Crane parts maintenance technology to master the essence, first of all, we must often check the motor shell and bearing parts of the temperature, motor noise, vibration there is no abnormal phenomenon.
In the case of frequent starting, due to the low speed and lower ventilation and cooling capacity, and higher current, the temperature rise of the motor will increase quickly, so it should be noted that the temperature rise of the motor should not exceed the upper limit specified in its manual.
Adjust the brake according to the requirements of the motor instruction manual.
The daily maintenance of the reducer can refer to the instruction manual of the manufacturer. And should often check the reducer foot bolt, the connection must not be loose.

2, the walking device lubrication
Secondly Crane parts maintenance technology to remember good ventilation fan lubrication, such as when using should first open the reducer ventilation cap, to ensure good ventilation to reduce internal pressure. Before work should check whether the height of the lubricant surface of the reducer reaches the requirements, if lower than the normal oil surface, should increase the same type of lubricant in time.
The bearings of each wheel of the travel mechanism are filled with sufficient grease (calcium-based grease) at the time of assembly, so there is no need for daily refueling. Every two months, the grease can be replenished through the oiling hole or by opening the bearing cover, and the grease is folded and removed, cleaned and replaced once a year.
Each open gear meshing place apply grease once a week.

3, the winch group maintenance and maintenance
Often observe the crane gearbox oil window, check whether the lubricant oil level is within the specified range, when lower than the specified oil level, should be timely replenishment of lubricant.
In the crane use is not very frequent and the sealing condition and the use of good environment, the lubricant in the gearbox is replaced every six months, and when the use environment is poor, every quarterly replacement. When it is found that the crane box into the water or oil surface always has foam and determine the oil has deteriorated, should immediately change the oil. When changing the oil, the oil should be replaced strictly in accordance with the oil specified in the manual of the gearbox, do not mix the oil.