Actually, there are two cylinders; the main/master cylinder and one to actuate
the air/vacuum valve (three if you count the vacuum canister as a cylinder).
I recommend spending a half-hour or so studying the manual so you know exactly
how the servo (booster) works. Instructions come with the rebuild kits. Study
the unit--maybe take notes and/or photos--as you take it apart. What usually
fails is the "gland" seal that seals the vacuum piston shaft. Make sure the
check valve works. Unfortunately no one makes new ones and used ones are hard
to find (check with BCS). Probably a good time to replace the vacuum hose from
the manifold to the servo.
You may or may not need the dry lubricant depending on the miles on the
booster. Probably a good idea to use it. Sandstrom has a minimum order and
hazmat issues ... expect to pay up to $50.
If you send the body out for re-sleeving, make sure the shop doesn't sandblast
the air/vacuum valve area (or the threads to the brake lines).
It's arguably a "fun" job.
bs
--
***************************************************************
Bob Spidell San Jose, CA bspidell@comcast.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
***************************************************************
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
http://www.team.net/archive
|