[Shop-talk] Weird clutch petal

[Donald H Locker]

Oooh - another Spitfire "tipping valve" fan!

Donald.
--
*Plain Text* email -- it's an accessibility issue
() no proprietary attachments; no html mail
/\ <http://www.georgedillon.com/web/html_email_is_evil.shtml>

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 at autox.team.net <mailto:shop-talk at autox.team.net>> wrote:
> 
>     Pat thank,  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 at icloud.com
>>     <mailto:patintexas at 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 “lump” in the fluid
>>     surface, indicating a bad seal.
>>
>>     Peace,
>>     Pat
>>
>>     Pat Horne
>>     We support Habitat for Humanity

[snip]