Michael, I noticed you've made half a dozen threads on this drilling machine, it might be more useful for other owners in the future who need help, if you keep all questions and answers in one thread, it would make finding the information a lot easier.
The spindle is usually held in by circlips, remove these then press the spindle out of the quill, why don't you place the quill on the bench, take a clear photo of each end so we can see how the spindle is held in?