Hi Bill
I have just over hauled the brakes on TC9356, having discovered all wheel
cylinders leaking. Most well respected and competent brake repairers will
guarantee the quality if their work, including re-sleeving. In Australia, I
selected Auto Brake Service, a National franchised system of owned stores. For
$100 each, they sand blasted the exterior of each wheel cylinder, new bleeding
nipple, re-sleeved in stainless to specification size, cleaned the pistons and
replaced the internal and external rubbers. In other words, brand new.
Recommend not to use dot 5 (silicon) brake fluid unless you have a very
specific reason. Change your brake fluid as an annual service task and you
will be safe. If you must move to silicon fluid, you will need to not only
completely flush the old fluid from the system, but remove every trace of the
old fluid as they are not compatible and will create a sludge over time when
mixed.
Good Luck
Tin Newton
----- Original Message -----
From: billear3@aol.com
To: mg-tabc@yahoogroups.com
Sent: Tuesday, September 07, 2004 11:00 AM
Subject: [mg-tabc] Steve Plath's Master Cylinder Conundrum
MG-TABC gallery
Steve Plath has broached a question that also applies to TC 0735: what
to
do about corrosion in the brake cylinders, particularly the master cylinder
@$200.
My time-honored solution to this problem is to buy a brake cylinder hone
and see if honing the bore takes out the pits.
If not, the case with TC 0735, one throws out the old part and buys a
new
one...an issue if the new one costs $200.
It is alleged that there is a business somewhere that will rehab the old
part by boring out the cylinder and fitting a sleeve therein. I don't know
the
name or the location of the enterprise, but must admit that I have
misgivings
about the longevity of this fix vis-a-vis its cost.
My problem is that brake fluid under pressure is likely to be forced
into
the joint between the remachined bore and the sleeve. There it will likely
fester, or leak, and end up being just a "Temporary", or intirim fix.
A common alternative to a shrink fit for the sleeve is to apply some
sort
of adhesive to the sleeve OD, and then press the pieces together. An organic
adhesive doesn't sound like something that's likely compatible with brake
fluid.
I've been pondering the potential procedure of reaming out the bore to a
size a tad larger than the deepest pit, prepping the surface, and then
plating
the ID back to an approximation of the spec diameter with hard chrome.
Plating the ID should be rather straightforward, but I haven't checked
out the potential cost.
Opinions are solicited for both Steve and I.
Bill Earhart TC 0735
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