Issues with the high-speed pump auxiliary oil pump
Thread Content
The oil pressure is low after the horizontal high-speed pump and the auxiliary oil pump start up. What’s the reason?
Try rotating the pump; due to the structure of the high-speed pump’s main oil pump, there is a possibility that oil may flow back to the main oil pump； Then is there a problem with the pump? Is there a leak in the pipeline? Is the inlet pipe leaking? Is the filter pressure difference high? If everything else is fine, then it’s likely that the bearing clearance is too large, causing pressure leakage!
There are no leaks on the outside; the pump is new, and the pressure gauge is located in front of the filter
Could it be that the inlet valve didn’t open fully, or is the inlet filter clogged?
Oil pumps are equipped with built-in or external safety valves; check whether there is any internal leakage in these valves. The oil pressure of the high-speed pump’s auxiliary oil pump is not very high to begin with
1. Check and adjust the relief valve to achieve the required pressure. 2. Verify whether the auxiliary pump can reach the designed pressure and whether it is too low. 3. Has there been any change in the oil’s temperature or viscosity?