Brake Resivor Cap, 2 pieces?

[Ratkiller]

I have an 62 Morris Mini Minor, Deluxe. After checking the brake fluid level, I noticed when I tighten the resi cap it split into 2 pieces. Is this normal?

[GraemeC]

Perfectly normal, that's how they are.
Allows the cylinder to vent.

[andy1071]

GraemeC is correct. The cap is made in 2 pieces, which are press fitted together, to form a sort of labyrinth for the vent.

They shouldn't come apart when you screw the cap on though!
Probably an age thing...

[guru_1071]

ive seen them fail when people push the pistons back to swop the pads, the excess fluid in the master fillers the cap up and pops the top off it.

[mab01uk]

62 Morris Mini Minor probably came with the original metal caps now available again from Minispares:
http://www.minispares.com/product/Class ... o%20search