Selection of hydraulic pump oil

Regardless of the composition of the structure or the scope of application, maintenance and maintenance, agricultural machinery and construction machinery have many differences, hydraulic pump is an important part of mechanical equipment, hydraulic oil selection is also more stringent and cautious.

Pay attention to the selection of hydraulic oil, because all kinds of hydraulic suspension system design structure is different, in the way of oil and oil specifications are not the same. Such as Dongfanghong -28 tractor hydraulic suspension system: oil specification is summer (more than 4T areas throughout the year) with 30 ordinary diesel engine oil, winter (less than 4T area) with 20 ordinary diesel engine oil. Therefore, the locomotive user must select the correct hydraulic oil according to the locomotive instructions. Otherwise, the hydraulic oil specification does not meet the requirements, which will cause the hydraulic suspension system difficult to estimate the loss of the fault.

Keep the hydraulic oil clean, pay attention to the key points to keep the hydraulic oil clean, is to maintain the hydraulic suspension system normal work, reduce the wear of the important guarantee. The main points of attention are as follows: the fuel tank and funnel must be cleaned, and when filling, don't add dirty oil to the hydraulic tank or drive box.

The hydraulic oil and gearbox common locomotive, in the new load test run, to separate from Ying drive oil. Otherwise, the iron filings produced during the running in are entered into the hydraulic system.

When you replace hydraulic oil, you should pay attention to the operation method. If you want to replace the hydraulic oil, first of all, when the hydraulic system work, the oil temperature is higher, when the impurities have not been precipitated, the oil is released, and the handle is moved to the "falling" position, so that the oil in the cylinder is discharged at the same time. Then wash the hydraulic system with Chai Shan, release the cleaning fluid and then add clean hydraulic oil.

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