I saw that thread earlier, did not read it through because it did say it was a replacement.
So i take it assuming the engine is off when you pump the clutch and you have the cap open or any source open (even if its up by the master cylinder) its safe to say the air would travel upwards to the master and then purge through?
'89 YJ Wrangler - Sold
'95 ZJ Orvis Edition
'89 YJ Islander