NL2000SY subspindle disassebling

[sass11]

On my NL2000SY lathe, the subspindle bearing started making a noise and now I like to disassemble the spindle. How do get the brake disc off the subspindle? Tried by pulling and turning but nothing, disk is like welded to the shaft. Does it have some secret trick for disassembling?

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[sass11]

I got the brake disc off, it had a left-hand thread. I had to heat it up a bit to get it moving.