|    Also,  it was interesting that there are several versions of the servo
   offering  differing  amounts of boost.  My guess is slightly different
   diameter of the vacuum canister.
   bs
   Bob Spidell wrote:
Yep, this was a big help.  Unfortunately, the page describing the
function of the ball is missing from the doc; apparently, it's part of a
piston design that eliminates the "clunk" my MK 2A booster makes when
brakes are applied.
This doc is a gold mine.
bs
Carroll A Phillips wrote:
Tadeusz,    a great big thank you!!!  I have MGC manual breakdown as well as
factory parts manuals but never saw that one. Bonus on the Mk2a for my
healey as well !
Bob you can see in Tadeusz PDF where the ball is if you havent already
located it.
Ive never seen a publication reguarding  replacing the Healeys units with
these as the superceded replacement.
Interesting
Carroll Phillips
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Bob Spidell           San Jose, CA            bspidell@comcast.net
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