Michael, Mark and other interested parties:
Yes, the TR6 clutch hydraulic line does have a flexible portion of hose.
But, it is not rubber, but rather a very hard, but flexible (sort of!)
nylon hose. Secondly, I replaced this and the steel portion of the line,
along with fittings, back in 1990, as a last-ditch effort to find a cure.
(The nylon hose is a translucent orange color), and seems to be impervious
to anything, so I doubt that it is , or was, contributing to the problem.
Thank you for the advice!
I would like to emphasize that all other mechanical linkages and so forth
are in good condition. I'm aware of the taper pin problem, and since
clutch operation is always restored following a rebuild of the hydraulics,
I think we can rule out any other problem. Last time I had the 'box out, I
changed the release collar, TO bearing, the little pins that are pressed
into the fork, and the taper pin. The only thing I have not done with
regards to the clutch linkage is to replace the bushing in which the cross
shaft rotates.
Oh... and Mark... I WANT A LAND ROVER!! Not that I expect you to help, or
anything, truthfully there is no way I'll afford to by another "toy"
anytime in the next five years. Noticed that you have a '71. I don't know
much about them yet, but maybe someday...
Pete Chadwell
>Pete, it may or may not be the fluid destroying the seals. I had a `63
>Spitfire in which someone had put the incorrect fluid into the brake
>system before I bought it. The seals (and this is the typical mode of
>failure, from what I understand) swelled and finally lost so much
>elastic strength that they ruptured... voila, no brakes. This happened
>quite suddenly (unfortunately, coming up to a light in the middle of
>rush-hour traffic in downtown Honolulu <g>). But there weren't
>particles in the fluid.
>
>Black particles suggest abrasion (in a new cylinder and slave, I would
>not venture a guess why), but I would ask, since I don't have a TR6 in
>the garage, does the car have a flex hose between master and slave?
>Think Nickbk mentioned this a while back. If true, that hose could be
>tired, and if it has gotten brittle and has started to crack internally,
>would also shed pieces of rubber.
>
>And, as Nickbk said, it would also expand more under pressure, thus
>limiting the pressure delivery to the slave because of the volume
>change. Moreover, since rubber is compressible, the more rubber shed
>into the fluid, the higher the overall compressibility of the fluid. If
>you've been flushing the fluid with each change of master/slave, and the
>problem then gets progressively worse, it might be something like
>that.
>Cheers.
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