Hi everyone,
Hope all is well. I've been having this issue where a 88HQ (Aux Hydraulic) pump of a GE Frame 5PA turbine is always running/in operation and would never stop after we conducted a major overhaul. We tried calibrating and replacing 63HQ and also replacing the 88HQ but to no success. We also tried to purge the lines to make sure that no plugging is causing a reduction in Hydraulic pressure but still to no avail.
My next assumption is that the main hydraulic pump can't generate enough pressure, therefore we tried to replace the main hydraulic pump,which mitigates the issue for a while but with a finding that the pressure gauge reading (near 63HQ) indicates the pressure is consistently fluctuating. And after a couple of weeks, 88HQ continues to start again and would never turn off.
I was wondering if any of the members here had any similar experience and what would be the cause of the issue?
Even though 88HQ always operating is a minor issue and may not create further issue if left running, I prefer it to operate based on the operating philosophy as I'm not sure the pump is rated for continuous operations.
If there are other documents or info required, please inform me so I can provide it to the best of my capability
Thank you very much and best regards
Hope all is well. I've been having this issue where a 88HQ (Aux Hydraulic) pump of a GE Frame 5PA turbine is always running/in operation and would never stop after we conducted a major overhaul. We tried calibrating and replacing 63HQ and also replacing the 88HQ but to no success. We also tried to purge the lines to make sure that no plugging is causing a reduction in Hydraulic pressure but still to no avail.
My next assumption is that the main hydraulic pump can't generate enough pressure, therefore we tried to replace the main hydraulic pump,which mitigates the issue for a while but with a finding that the pressure gauge reading (near 63HQ) indicates the pressure is consistently fluctuating. And after a couple of weeks, 88HQ continues to start again and would never turn off.
I was wondering if any of the members here had any similar experience and what would be the cause of the issue?
Even though 88HQ always operating is a minor issue and may not create further issue if left running, I prefer it to operate based on the operating philosophy as I'm not sure the pump is rated for continuous operations.
If there are other documents or info required, please inform me so I can provide it to the best of my capability
Thank you very much and best regards