metalmagpie
Titanium
- Joined
- May 22, 2006
- Location
- Seattle
This is the hydraulic unit I'm having trouble with, from my K.O. Lee surface grinder.
The history is that I ground a part and then left the area of my grinder leaving the spindle and hydraulic system powered up and running. I came back some time later and smelled something hot. I also noticed a big puddle of hydraulic fluid all around the machine. I turned everything off and cleaned up. After, I turned the hydraulic unit back on. It runs like it used to for a few seconds and then a bad noise starts. I don't know if this noise is entrained air, fluid cavitation, or a relief valve cracking. All of those things make noises.
Here is a short video clip. Turn up your sound and you will be able to hear the sound of the machine starting up, as the noise goes from normal to not-normal at about 0:14. Any idea what this noise is, or why fluid may have leaked when the pump got hot?
metalmagpie
http://nwnative.us/Grant/images/temp/hydStartup.mp4
The history is that I ground a part and then left the area of my grinder leaving the spindle and hydraulic system powered up and running. I came back some time later and smelled something hot. I also noticed a big puddle of hydraulic fluid all around the machine. I turned everything off and cleaned up. After, I turned the hydraulic unit back on. It runs like it used to for a few seconds and then a bad noise starts. I don't know if this noise is entrained air, fluid cavitation, or a relief valve cracking. All of those things make noises.
Here is a short video clip. Turn up your sound and you will be able to hear the sound of the machine starting up, as the noise goes from normal to not-normal at about 0:14. Any idea what this noise is, or why fluid may have leaked when the pump got hot?
metalmagpie
http://nwnative.us/Grant/images/temp/hydStartup.mp4