When excavators are performing maintenance, the problem that everyone should pay attention to is to maintain the floating oil seal of the excavator. Every day, it has to be cleaned. When cleaning the fuel tank, everyone should check if there is any oil leakage. It is found that there is oil leakage, which means that the sealing of the whole oil seal is problematic. At this time, it is necessary to check and solve the actual problem in time. Always check the oil level of the oil. If there is too much oil impurity, there is alloy powder. In the case of metal iron filings, the new oil should be completely replaced. The oil brand and quality should be changed according to the season requirements. If it is delayed, it will directly affect the problem of normal work, so it is quite important to check each part.