Everyone knows that the pollution of hydraulic oil will affect the progress of the excavator, but how to check whether the hydraulic oil of the excavator is polluted is not known by many new mobile phone owners, so today I will share with you to check whether the hydraulic oil of the Caterpillar excavator Analysis of contaminated methods and causes of contamination.
Excavator hydraulic oil pollution is directly related to the work of the hydraulic system, which not only affects the performance of the hydraulic system and the service life of the hydraulic components, but also directly affects whether the hydraulic system can work normally. Most failures of the hydraulic system are related to the contamination of the hydraulic oil, and it is very important to control the pollution of the hydraulic oil.
Cause Analysis:
First of all, the external dust, sand, etc., enter the hydraulic oil through the reciprocating piston rod during the operation of the hydraulic system, and the leakage oil that flows back to the oil tank. In addition, when overhauling, a little care will also allow dust, lint, etc. to enter the hydraulic oil.
Secondly, the sand, chips, abrasives, welding slag, rust, dust and other dirt in the hydraulic system pipelines and hydraulic components are not cleaned before the system is used for washing. When the hydraulic system is working, these dirts enter the hydraulic oil .
Finally, the hydraulic system itself continuously generates dirt, and directly enters the hydraulic oil, such as the wear particles of metal and sealing materials, particles or fibers of the filter material, and the jelly generated by the oxidation and deterioration of the oil due to the increase in oil temperature. .
Currently used in hydraulic systems are basically swash plate plunger pumps, which have poor anti-pollution ability. Especially for the closed hydraulic system, the oil tank is small, the oil in the system is always circulating in the system and cannot be filtered, and the oil temperature is always high. When the hydraulic oil is contaminated, the pump damages faster than the open hydraulic system.
Tips: If you find that the hydraulic oil is contaminated, please stop using it immediately to prevent damage to the hydraulic components. Cause greater losses. The entire hydraulic system including the hydraulic oil tank, pipelines and other hydraulic components must be thoroughly cleaned, and then all hydraulic oil filter elements and hydraulic oils should be replaced. When filling hydraulic oil, the hydraulic oil filter with a filtering accuracy of 10-20μ must be used for filtering. If only the hydraulic oil is replaced without cleaning the entire hydraulic system, then the system cannot be guaranteed to be clean, and there is a risk that the system will fail again in a short period of time.
