Firstly, the problem of insufficient system pressure is caused by the failure of the pressure regulating valve or the abrasion of the valve core of the pressure regulating valve. At this time, the oil filter needs to be removed to observe whether there are metal debris

If there are bright steel particles, it indicates that the working pump of vertical roller mill has wear problems.

If aluminum particles are found, it indicates the wear of vertical mill.

If there are black or copper particles, it means that the clutch wear failure.

In addition, the magnetic filter screen under the oil pan needs to be removed for inspection to see if there is any steel debris. Through the inspection of the above parts, it can be determined whether the oil temperature rise is caused by the component damage.