In The Elevator, What Should We Know About The Oil Quality And Oil Level? In Addition, If The Lift Can't Rise, Or The Lifting Force Is Weak, How Should We Deal With It? These Two Questions, Which Will Be Involved In The Following, Are Put Forward Mainly For The Purpose Of Leading Out The Content Of The Article, So That We Can Learn Better. In The Elevator, We Should Know About The Oil Quality And Oil Level: (1) When The Lifting Platform In The Elevator Rises To A High Level, The Hydraulic Oil Level Should Be Higher Than The Bottom Of The Oil Tank, Generally 40-50mm. (2) When The Oil Color Of The Hydraulic Oil Becomes Dark, The Oil Quality Is Sticky, Or There Is Foreign Matter In The Oil, It Should Be Replaced In Time. The Main Reasons For This Problem Are As Follows: (1) The Pressure Regulation Of The Relief Valve Is Not Correct, At This Time, It Should Be Adjusted Correctly. (2) If The Oil Cylinder Leaks, Replace It. (3) If The Reversing Valve Is Stuck Or Leaking, Repair Or Replace It. (4) If The Oil Level Is Too Low, It Should Be Added In Time To Make The Oil Quantity Sufficient.