1100mx z axis not repeating

[Lockheed]

here is the original thread about the issue

myself and many others have done this

it’s a known issue

Ed

Oil not going to the Z column or Z ballscrew? Try this small Fix

I have a 1100MX with auto oiler that had similar Z axis oil supply issues. I chased this problem for quite a while before I found a very small leak that was allowing air into the oil line supplying the Z axis. In my case the leak was at the “banjo” fitting on the side of the column. The air leak allowed the oil in the oil supply line to drain down overnight, and the time required to refill the oil supply line and provide lubrication to the Z axis was greater than the recommended oil pump run…