In a message dated 12/23/2003 8:17:52 PM Eastern Standard Time,
ryoung@navcomtech.com writes:
> >But what did not come with the kit, and isn't shown as having a
> >part number at
> >all, is the first rubber ring that goes around the steel cup that
> >rides the
> >plunger. It must exist to ensure a proper distance is kept
> >between the steel
> >cup and the inner cylinder wall of the master cylinder.
>
> Terry, I think you're looking for something that doesn't exist. There are
> only three pieces of rubber in the MC, the seal for the 'foot' valve, the
> seal for the main piston, and the rubber dust cover.
>
> I'm not entirely sure what steel cup you're talking about, but the only
> piece I can think of is kept from touching the cylinder wall by virtue of
> being mounted on the piston.
I'm not absolutely sure about this, but I do see another seal depicted in the
TR3 Workshop Manual -- towards the opening, on the piston. Is that the same
seal? Anyway, there was a similar arrangement on the earlier Herald brake and
clutch master cylinders (same cylinder that continued to be used on Spitfire,
etc., clutch systems). That seal became redundant at some point and was
deleted
from later cylinders and from the rebuild kits. It apparently wasn't
necessary.
Apologies if I'm misunderstanding you or misinterpreting the TR3 Manual.
--Andy Mace
*Mrs Irrelevant: Oh, is it a jet?
*Man: Well, no ... It's not so much of a jet, it's more your, er,
Triumph Herald engine with wings.
-- Cut-price Airlines Sketch, Monty Python's Flying Circus (22)
|