T-Series Clutch mater cylinder little plastickey bit

[MGBGT_noob]

I just bought a rebuild kit for the clutch master cylinder of my '74 MGB GT.

Everything looks like the parts that came out of the cylinder when I disassembled it, except...

The rebuild kit came with a small plastic piece that I don't recognize. It has a round base, with three "prongs" that form a sort of cone shape above it. It also has a small brass strip embedded in the underside of the base, forming a sort of horseshoe shape.

It fits in the base of the master cylinder's main spring, but as I said, I don't remember a similar part coming out of the cylinder when I took it apart.

Can anyone tell me if this plastic bit actually goes in the base of the spring (where it seems it would block the outlet port)?

 

[MikeP]

It isn't the exact same as the MG, but look at this picture. I believe what you're describing is the bit just to the left, (opposite the fork end), of #31 spring. What it does is allow the seal at the end of the rod to cover the port when the pedal is depressed, and then to uncover the port when released without moving off center.

https://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=32781

 

[Deleted member 8987]

You old part is probably still stuck in the bore.
I had to use a wire to knock mine out.