Re: SER1 Brake Master Cylinders

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Mark and Wayne

Wayne's post on honing of brake cylinders is a good option but only for very
minor scale and scratches in the bore.  It should be used with caution.  The
problem with honing is that it can oval and taper the bore reducing the
efficiency of the seal and can potentially be unsafe.  Honing will do
nothing for pitting caused by rust as a result of water contamination of the
brake fluid.  A properly installed stainless liner is actually more reliable
than the original cast iron/aluminium cylinders.

In my opinion, modification or overhaul of hydraulic brake components are
the domain of brake specialists.

Cheers
EIR
----- Original Message ----- 
From: <wperrin@xxxxxxx.xxx>
To: <series1@xxxxxxxxx.xxx>
Sent: Tuesday, June 28, 2005 12:37 AM
Subject: Re: SER1 Brake Master Cylinders


Hi Mark,
A couple of inexpensive fixes you might try before re-sleeving the master
cylinder or buying one.  I found a hone made for the task that would fit in
a drill. This smoothed the bore. Then I bought a rebuild kit which is the
same for a Ser II as our trucks. It is basically two rubber grommets or
seals.  I found I had a good vacuum with the repair and it has worked very
well for the last couple of years.  Others on the list have either
re-sleeved the bore or replace with a Seris 2 unit
Wayne
New Hampshire
>
> From: "Mark Strangways" <mark.strangways@xxxxxxxx.xxx.xx>
> Date: 2005/06/27 Mon AM 09:45:56 EDT
> To: <series1@xxxxxxxxx.xxx>
> Subject: SER1 Brake Master Cylinders
>
> Hi All,
>
> I have been away at a small steam rally this weekend - the 1000 Engine
> Rally at Astle Park in the UK. There was a better than normal turnout of
> Series Ones there, and we got talking about Master Cylinders. Due to the
> costs of the original item, quite a few people had modified versions
> fitted to their vehicles. My own Series One has what I think is an alloy
> master cylinder off a series 2, but some vehicles had the cast iron
> cylinder from  a series two, which looks very similar to the original
> Series One Master Cylinder, exept that it only has two mounting holes.
>
> I was just wondering what other folks have done - or are you all
> 'original'
>
> Cheers
> Mark
> 'sunny' Halifax UK



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