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How to identify whether the hydraulic oil of the excavator is deteriorating?

Jun 28, 2018

How to identify whether the hydraulic oil of the excavator is deteriorating?


Based on years of experience in excavator maintenance, the Ritt excavator repair plant teaches you how to identify whether the hydraulic oil of the excavator is deteriorating.

1) remove some of the oil from the hydraulic pump. If it is found that it has a milky white cloudy (sometimes like yellow milk) and is identified by the combustion method, it is found that it contains a lot of water and has lost the stickiness with the hand feeling, which indicates that the oil has been thoroughly emulsified and deteriorated.

2) remove a little oil from the tank and filter it with filter paper. If there is a black residue on the filter paper and a pungent smell, it shows that the oil has been oxidized and deteriorated. Some precipitated sludge can be removed directly from the bottom of the tank. If there are many asphaltenes and colloid precipitates, it is put on the finger to knead it. If it feels a lot of gelatin and adhesion, it shows that the oil has been oxidized and deteriorated.


Please change the hyraulic oils for the machines,espectional for the used excavator,used wheel loader,used motor grader,used bulldozer and other used construcion machines on time .