Master Cylinder Fill Cap

[52B3B108]

Is there supposed to be a gasket or o-ring on the fill cap for the master cylinder? I found what appears to be an old paper gasket that has pretty much disintegrated when I took the cap off. There is a rounded groove between the threads and the top of the cap that looks like would accept an o-ring. I looked in the parts book and it doesn't show anything needed. Just checking.

[lscrymgeour]

I had mone off the other day and there is no gasket on it. Not sure however if there is supposed to be one or not.

Lyle

[Don Coatney]

P-15 may or may not be the same.

[62rebelP23]

when i got my reman MC, it had a cheap plastic cap on it. i'd like to replace it with something better, but what? is there a brass cap or the like available?

[Merle Coggins]

Truck M.C. is a bit different, although the cap may be the same. The page from my service manual looks like a pipe plug, but my Napa M.C. has a cap with a gasket under it. As I recall, that's how the old one was too.

[52B3B108]

Well, it won't cost much to try an o-ring and see if it does the trick. I don't know if the master cylinder is leaking or it's the oil from the filter can above it.