mjk
Titanium
- Joined
- Oct 20, 2005
- Location
- Wilmington DE USA
When I picked this lathe up a few years ago the oil pressure gauge had a cracked bezel.
It was hard to read, the needle would get stuck on the glass.
I replaced it about a year ago with a 0-30 psig which was within the range of the normal pressure.
Mounting and adapting was a pain but it looks good and works.
But it was pegged most of the time and after reading more of the manual cleaning of the sump screen is recommended.
The high pressure issue is apparently common with this lathe.
Had first tried changing the oil, didn't make a difference.
So now I've went into the sump and I've removed the sump screen and have cleaned it
Replacing the return lines as they were hard as a rock.
I'm also upon reassembly going to add a metering valve in the pressure line.
This has been a fix used by previous owners/posters to solve the high pressure.
Possibly the only problem with having the high pressure is the front/spindle seal.(I don't want to have to replace that)
So attached is a pic of the sump pickup(left) and an unfound located "Nozzle"(right)
The sump is easy to find, and upon reassembly I'll make a few modifications to make it maintenance friendly.
But is the detail in the right side of the pic recognizable to any HB575 owners, or is it only part of part of the 500 or 725?
It was hard to read, the needle would get stuck on the glass.
I replaced it about a year ago with a 0-30 psig which was within the range of the normal pressure.
Mounting and adapting was a pain but it looks good and works.
But it was pegged most of the time and after reading more of the manual cleaning of the sump screen is recommended.
The high pressure issue is apparently common with this lathe.
Had first tried changing the oil, didn't make a difference.
So now I've went into the sump and I've removed the sump screen and have cleaned it
Replacing the return lines as they were hard as a rock.
I'm also upon reassembly going to add a metering valve in the pressure line.
This has been a fix used by previous owners/posters to solve the high pressure.
Possibly the only problem with having the high pressure is the front/spindle seal.(I don't want to have to replace that)
So attached is a pic of the sump pickup(left) and an unfound located "Nozzle"(right)
The sump is easy to find, and upon reassembly I'll make a few modifications to make it maintenance friendly.
But is the detail in the right side of the pic recognizable to any HB575 owners, or is it only part of part of the 500 or 725?