John - As I recall, before I dismantled my "2", I had the same problem.
Everything was tight, and the gaskets did not leak. It only seemed to
"dribble" when I drove it. I believe it was Lou, from this list, who
suggested that it was pressure within the master cylinder from the small
hole between the bores and the tank on top. His theory was that when the
pedal was released, the fluid returned to the tank on top, and caused a
small geyser which in turn caused the leak. His solution was to create a
small plate to fit within the tank, over the relief hole, which would
prevent the fluid from "geysering" too high.
If this doesn't make any sense, maybe Lou can describe it better.
David Gunn
1954 TR2 TS3388L
Chico, CA
>From: John Gillis <jgillis@tcd.ie>
>Reply-To: John Gillis <jgillis@tcd.ie>
>To: triumphs@autox.team.net
>Subject: [TR] Master Cyl. leak
>Date: Wed, 10 Jan 2007 17:59:36 +0000
>
>Hi guys,
>Having fitted my re-sleeved and overhauled (new seals etc.)
>brake/clutch master cylinder and bleeding out both dealing with a few
>pipe dribbles here and there I was disappointed to find a small but
>definite fluid leak from the master cylinder itself, which gathered
>under the cylinder and then found its way via a bolt hole or two onto
>the footwell. After checking I was happy it did not come from the two
>pipe connections nor from the pushrods, from which I removed the
>rubber boots. So I guessed it was from the endplate/gasket area. I
>was planning to remove the cylinder and deal with it but over the
>past 3 weeks the leak has stopped. Could this be due to me
>overfilling the master cyl, in the first instance and when it finally
>reached the recommended 1/2" below the lid it stopped, does this
>theory hold water? or fluid in this case. I should say although the
>car is not yet a runner, all plumbing is in place and working and I
>pumped both pedals on a regular basis to keep stuff from sticking.
>All opinions welcome
>thanks
>John
>BTW I used DOT5, lucky, otherwise I would also be faced with some
>re-painting
>
>--
>John Gillis
>1954 Triumph TR2
>1991 Kawasaki W650
>Dublin
>IRELAND
>
_________________________________________________________________
>From photos to predictions, The MSN Entertainment Guide to Golden Globes has
it all. http://tv.msn.com/tv/globes2007/?icid=nctagline1
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