megan,
I put out a couple of feelers re Beaufighter manuals and a friend e-mailed me a PDF copy of...
"The Australian Beaufighter Mk21 Descriptive Manual".
It's dated January 1945 and runs to 270-odd pages.
While, of course, it refers to the Oz-built version, I doubt there'd be much difference in U/C systems.
I'm a bit pressed for time at the moment, but if I forward the whole manual to you, perhaps you might glean the answer from that publication.
I understand that hydraulics are covered in chapter 9.
Getting close, folks. Stay tuned.