DIY Brake Master Cylinder rebuild

**ECU-MAN** · 16-01-2011 12:08 PM

its more than an O ring, Its a seal. if you didnt get a new one and the old one wasnt leaking then reuse the old one

**grifty** · 22-01-2011 09:48 AM

looks like it was leaking before so i went out to peter warren to buy it, turns out the seal is sold together with the piston guide assembly.

The bloke said he would contact me in a couple of days to see if honda japan will remake the part for me, i hope they do remake it otherwise i gotta go to the wrecking yards and find a good one that i can use.

**chingaling** · 17-06-2011 02:49 PM

hey there may i ask what kind of greases did u use? was it just rubber grease (red) , what about the white one ? are they nesscessary to get the grease on ?

cheers

**vinnY** · 17-06-2011 02:54 PM

I believe they were provided with the kit

**grifty** · 17-06-2011 11:42 PM

You can just use brake fluid instead.

**ECU-MAN** · 19-06-2011 03:55 PM

the white grease is like vasoline, its purpose is to seal the BMC to the booster to prevent vacuum leaks

the pink grease is a type of rubber grease to prevent damage to the seals during assembly. ensure any rubber grease you use is brake fluid compatible.