clutch master cylinder mystery seal

[alan.gilbert_6384]

Hi All,

So i have tried to find this before bothering the great and good on the forum, but have failed miserably.  I brought a clutch master cylinder replacement kit (the correct one for 1977 spitfire 1500) and have a mysterious spare seal.  When I dismantled it this seal was no where to be seen, although it is detailed in both the WSM and the bible Haynes.  Please see pictures, it the one shown as in front of the piston item number 13 from haynes and also shown in WSM picture.  I can not find where this little bugger goes, there does not seem to be any registers for it, can any one enlighten me, thanks very much.

[Pete Lewis]

its nothing to do with the hydraulics .it wrong side of the workings 

maybe some anti rattle rubber to support the pushrod when its in a free state

cant see what it does  or make any sense of the reason 

Pete

[Colin Lindsay]

It's obsolete in later cylinders... but probably included by the manufacturers just in case. Known as an 'end seal'.

 

 

[Pete Lewis]

aha  now i  remember that rings a bell ,

thanks Colin needs a memory jog these days of long forgotten things 

 so the piston may or may not have the secondary seal groove depends on its age  but you dont want it anyway 

Pete

[alan.gilbert_6384]

28 minutes ago, Colin Lindsay said:

It's obsolete in later cylinders... but probably included by the manufacturers just in case. Known as an 'end seal'.

 

 

Brilliant, thanks so much, was worried I missed something as I could not find any info anywhere else.

Thanks again.

[alan.gilbert_6384]

22 minutes ago, Pete Lewis said:

aha  now i  remember that rings a bell ,

thanks Colin needs a memory jog these days of long forgotten things 

 so the piston may or may not have the secondary seal groove depends on its age  but you dont want it anyway 

Pete

Cheers Pete, much appreciated.