Oooh - another Spitfire "tipping valve" fan!
Donald.
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On 13-Oct-2019 12:07, Doug Braun via Shop-talk wrote:
> I agree, this certainly sounds like a problem with the reservoir shutoff
> valve not closing properly.
> If it were a problem with the main seals, a lot of fluif would have leaked
> out.
>
> I had the same problem develop in my Spitfire brake master cylinder. It
> turned out that the
> "tipping valve" (the shutoff valve for the forward half of the cylinder,
> was not seating properly.
> It was part of an aftermarket kit I had installed several years ago. I
> re-installed the original one
> (which I had kept), and the problem went away.
>
> The lesson: In many cases a new part in an aftermarket rebuild kit can be
> inferior to a used original
> part.
>
> Doug
>
>
> On Sat, Oct 12, 2019 at 6:30 PM Robert Nogueirao via Shop-talk
> <shop-talk@autox.team.net <mailto:shop-talk@autox.team.net>> wrote:
>
> Pat thank, Â but having inspected the master it appears to be such a
> poorly made copy of a Girling I see nothing but trouble in the
> future.the piston does not slide smoothly in the bore leading me to
> think it is hanging up. Same with the reservoir cut off .
> Again thanks.
>
> Bob Nogueira
>
>> On Oct 11, 2019, at 11:15 PM, Pat Horne <patintexas@icloud.com
>> <mailto:patintexas@icloud.com>> wrote:
>>
>> You should be able to find a set of seals to try. Lots cheaper than
>> a replacement master.
>>
>> In the past I found this kind of leak by having someone watching the
>> fluid surface in the reservoir while I pressed the pedal down. On my
>> master there was a rise of the fluid where the jet of fluid came out
>> of the reservoir to cylinder hole, causing a â??lumpâ?? in the fluid
>> surface, indicating a bad seal.
>>
>> Peace,
>> Pat
>>
>> Pat Horne
>> We support Habitat for Humanity
[snip]
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