Page 1 of 1

Master cylinder question

Posted: Sun Mar 21, 2021 11:47 am
by Chill59
I've rebuilt my brake master cylinder with new seals.
I've bled the brakes and got a fairly decent solid pedal.
However, when you look into the master cylinder as the pedal is depressed the fluid squirts up a bit just behind the filler hole. Is this normal? or does it mean there is a problem with the master cylinder?
Cheers Chris

Re: Master cylinder question

Posted: Sun Mar 21, 2021 12:06 pm
by philthehill
A squirt is normal.

Re: Master cylinder question

Posted: Sun Mar 21, 2021 12:27 pm
by Chill59
philthehill wrote: Sun Mar 21, 2021 12:06 pm A squirt is normal.
Phew! :D

So, as we've been pumping the brakes while bleeding, it's resulted in tiny bubbles on the surface of the fluid. (which, I guess, is a result of the little squirts of fluid?). Is this also normal? They soon disipate.

Re: Master cylinder question

Posted: Sun Mar 21, 2021 3:07 pm
by philthehill
The brake fluid will soon normalise with the small bubbles disappearing.