I bought an old turning lathe ( Żebrak TOS S32) but there is problem with the o-ring of it's spindle.
I have opened the lathe and don't know how to take out the spindle shaft and replace the damaged o-ring with a new o-ring.
The following pictures show the part in question:
So as you can see from the pictures, how could I separate the spindle shaft from it's gear wheel to remove the spindle shaft and change it's o-ring?
The manual for the lathe can be found here:
Żebrak TOS S32 manual in 4shared
And, I also found this:

