MC Cap/ Gasket
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Tuned
Joined: Apr 2013
Posts: 498
Likes: 53
From: Sweden
MC Cap/ Gasket
I am probably stupid asking a question when I already got the answer but sometimes I just have to know WHY!!
I got my new Gasket for the MC Cap today. I have always thought the side with the "rubber walls" should point
down against the surface of the Brake Fluid. This to protect the Fluid from sloshing around in the MC then driving/breaking.
Now , when reading on the old Gasket I understand the "walls should point up against the Cup. I dont understand the purpose
of this "rubber walls"???
Laughing Gas
Joined: Nov 2013
Posts: 1,207
Likes: 60
From: S.E. Louisiana;so far USA
Sometime it's difficult to understand the philosophy behind a particular design. Perhaps it is to allow the gasket to descend into the reservoir as the level of the fluid lowers. It is likely that a bit of movement of the fluid in the reservoir is not considered detrimental. It would nice to be able to hear from someone who has insight into the design.
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
I was always told it was to keep air volume consistent above the fluid and serve as a visible indicator that you were using fluid. The first so that gradual fluid loss would not create a vacuum in a tightly sealed reservoir, the latter to visually indicate by the center 'ballooning' toward the fluid that you were using fluid somewhere and it was time to investigate and top off.
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