TT225 Clutch Failure - Troubeshooting help

[vtraudt]

TT225 - clutch failure:
Pedal to the floor (while driving).
Pumping doesn't help. Fluid level good.
Bleeding no difference.
No leaks.

Before ripping things apart, how can I troubleshoot to narrow down the issue?
Clutch slave cylinder (brakes work fine)?
Clutch master (inside bell housing, engine/transmissio out to get to it)?
Else?

[CIS-E4ME]

I would guess it's the hydraulic release bearing on the clutch. It's a combo slave cylinder/bearing. (Pic below)

That's the usual culprit in my experience.open-uri20170126-7343-59vgp7_1024x1024%402x.jpg

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