[R-390] Cosmos Dis-assembly

[rbethman]

Being completely honest, I wouldn't even bother with pressurization with 
ANY gas.

I would most likely consider pulling a vacuum.  All you and I are trying 
to do is to keep it dry and corrosion free.

You could bake the entire PTO at 200 Deg F, with the covers off.  Using 
oven mitts, IMMEDIATELY place the inner cover on.  The O-ring should be 
able to stand this - it used to be heated!

Pop the screws in along the front.  By then the remainder should be cool 
enough that you can take it to the bench and continue re-assembly.

The cooling will pull the inside to a pressure below that of "normal" at 
room temp.

Yep!  It is a mixture of Oxygen, Nitrogen, and all the other traces.

I bet that when Roger and crew worked on them, they didn't play with 
Nitrogen.

Bob - N0DGN