master cylinder rebuild

[LEAZER48]

I rebuilt the master cylinder on my 48 coupe, cleaned and honed the cylinder (on bench vise), soaked the kit parts in clean fluid, installed the kit, added clean fluid to reservoir and waited for leaks, after a few minutes it started leaking through the front, what did I do wrong?

[chap52]

I usually rub a little grease on the edges of the rubber seals when installing into a clean, dry cylinder both master and wheel cylinders.

[Bob C]

When you say FRONT do you mean where the brake lines connect?

Bob

[flathead4rd]

Originally Posted by Bob C

When you say FRONT do you mean where the brake lines connect?

Bob

That was my question also. Plus, grease on a rubber part? Not a good idea.

[LEAZER48]

No, front on my car means where the push rod for brake pedal is inserted

[Terry,OH]

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Is the end washer in place? just before the snap ring?

[LEAZER48]

Yes

[BL in NH]

instead of grease, lube the seals and cylinder walls with brake fluid.

[jake197000]

maybe you folded the seal over.take it back apart if its not torn you can prbably reuse it.

[LEAZER48]

Thanks Jake, I took everything apart applied brake fluid to the parts put it back together, no leaks, I think the first seal was not seated all the way.