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Am I about to do something stupid?

Posted: Thu Dec 15, 2005 6:17 pm
by 6thdude
Hi all,
I'm going to re-do the brake master cylinder and bits on Saturday and I've painted the rather rusty push rod which attaches to the brake pedal. I had a horrible thought though. By painting this item am I going to get paint into my master cylinder? My logic being: as rod pushes piston, brake fluid seeps past seals and reacts with paint, which is then slowly drawn back into the master cylinder and thus knackering it.
Humm? I know the cups should keep the brake fluid inside the cylinder but surely some gets past?
Any ideas?

Cheers
Jim

Posted: Thu Dec 15, 2005 7:19 pm
by lowedb
I know the cups should keep the brake fluid inside the cylinder but surely some gets past?
Not if it's working. Otherwise you'd lose your fluid quite quickly.

Posted: Thu Dec 15, 2005 10:44 pm
by bmcecosse
Fluid should not be coming and going in/out the master cylinder! If in doubt remove the paint.

Posted: Thu Dec 15, 2005 10:47 pm
by bigginger
and/or repair the cylinder. :D

Posted: Fri Dec 16, 2005 4:44 pm
by Cam
Jim, it should be absolutely fine. No fluid gets into the end 'cup' where the pushrod sits.

Posted: Fri Dec 16, 2005 6:27 pm
by 6thdude
Cheers chaps, just thought I should check. wouldn't want to have to flush out all the brake lines! :oops:
Jim