1986 PT40 Axle Leak

[ragster_ga]

I got home yesterday with the 'new-to-me' 1986 PT40. I picked it up
in Texas and brought it to its new nest in Marietta, Ga. The only
problem I encountered was a leaking driver's side rear (drive) axle.
I stopped at a Freightliner service center and they replaced the
gasket on the axle 8-bolt cover (in Jackson, Mississippi). I called
the original owner and he said that he replaced it a few weeks back
because it was leaking. His approach was a cork gasket and silicon
which for some reason did not hold. When Freightliner replaced the
gasket, they used a paper gasket (they also had a metal gasket that
would fit but said they always use the paper gaskets).

Now that I made it home, I checked the axle again and I have signs of
another leak in the same axle.

Anyone have any experience on keeping the axle from leaking. I don't
understand why the gasket did not hold the second time. They cleaned
and polished the metal surfaces before reassembly. Freightliner said
that no sealant was needed.

Glenn and Lisa
Marietta, Georgia
1986 PT40