leaking master cylinder....

[Peters02]

Very odd issue - The master cylinder is leaking from the top - where the cover meets the cylinder body - from the end opposite the firewall.  NEVER saw this before and I am thrilled it has ruined my new paint. Anyone ever come up against this?  It is not overfilled - have about 1/8 to 1/4 inch clearance from top of the cylinder.  Is there a remedy or did I get a defective part?

Thanks
Peter

[ChgrSteve67]

Mine did it too.
I even took a steel file to the top and replaced the lid as well and no luck fixing the problem.
I'm now trying to find another master cylinder to replace it.
I don't know what else it could be but defective and warped in some way.
unfortunately my cousin did the disk break conversion on my Charger and never told me what year parts he used for the conversion.
After replacing a few break lines it looks like he used a 75 Dart as a donor car.
I have had to special order the new master cylinder from Summit and it should show up Tuesday.

-Steve

[Peters02]

Thanks for the response.  At least I know i am not alone and imaging the impossible.
I will hunt down a new part and hope for the best.
Sorry to hear about your issue - I hope you can find the right parts.

Peter

[Charger-Bodie]

This is the main reason that I use DOT5 brake fluid. It doesnt eat paint.

As far as taking care of the leaky master cylinder. Get a different one and you should be good.

[resq302]

I had that issue too.  What I did was got some rubber gasket material and cut out the oval shape and then just placed the filler gasket between the cap and the actual expanding factory gasket.  This enables the bail wire to put more pressure on the cap making the seal tighter.  Worked like a charm!

I've also considered changing over to DOT 5 but have heard that there is still an issue with not all rubber parts working with DOT 5 fluid and swelling the rubber parts causing failure of the brake component.

[Charger-Bodie]

I had that issue too.  What I did was got some rubber gasket material and cut out the oval shape and then just placed the filler gasket between the cap and the actual expanding factory gasket.  This enables the bail wire to put more pressure on the cap making the seal tighter.  Worked like a charm!

I've also considered changing over to DOT 5 but have heard that there is still an issue with not all rubber parts working with DOT 5 fluid and swelling the rubber parts causing failure of the brake component.

Ive been using it for 15 years now and still havent had any trouble. It is harder to get bled,but after that its trouble free.

[charger Downunder]

Bend the wire down so it puts more downward presure on the lid.

[resq302]

Bend the wire down so it puts more downward presure on the lid.

I tried that trick but I think the metal is spring steel so it has a memory to it.  It did work like that for a while but then started leaking again.