Hydraulic Fluid Replacement frequency
Hydraulic Fluid Replacement frequency
(OP)
How do you determine how often to change hydraulic fluid?
We have a custom-made hydraulic test machine that is fairly low pressure (2000 psi max), and it's been 10 years since the fluid was changed. We use it almost daily, but probably 1-2 hours of operating time a day.
Will the fluid break down, or will filtering for contaminants be enough? It's a pretty well sealed system, so the seals and other contacting surfaces are about the only thing that will contaminate it.
Thanks!
We have a custom-made hydraulic test machine that is fairly low pressure (2000 psi max), and it's been 10 years since the fluid was changed. We use it almost daily, but probably 1-2 hours of operating time a day.
Will the fluid break down, or will filtering for contaminants be enough? It's a pretty well sealed system, so the seals and other contacting surfaces are about the only thing that will contaminate it.
Thanks!





RE: Hydraulic Fluid Replacement frequency
It is time to replace the fluid.
You could have the fluid chemistry checked. But your are time ahead to just change the fluid.
Ted
RE: Hydraulic Fluid Replacement frequency
Johnny Pellin
RE: Hydraulic Fluid Replacement frequency
The system doesn't get too hot, as it's usually running at a lower pressure than I mentioned (2000 psi max, 800 psi norm).
And we have right around 50 gallons, so it's probably just one of those borderline decisions. Actually, with 2 machines we'll be up to 100, so it may be worth checking the cost for testing if we can find someone close.