I had a long explanation post, but basically what Padfoote just said, it's about that easy. Just pop a Liquid Transposer down next to the crucible and mess with their input/output sides to move it from the crucible to the transposer. (orange/red output side -> Transposer)
Make sure you've got 4 ender pearls worth melted down, or you won't have enough to fill the bucket.
Edit: Also make sure the Transposer is in "Empty" mode, which should be the default anyways.
Double Edit!: Also Liquiducts would work too, if you can't place the Transposer next to the crucible for some reason.