gram gsv 50 screw compressor

[Grizzly]

i change the unloading seals they were hard but i put them in hot oil and then i pull them over the pistons.

That's impressive Gaz!
You will be telling me it was hot whale oil next! (Joke)
That's an old trick that I certainly had forgotten about.

Josef.
I am with you on your query, having built over 200 comps and not advocating changing the seals.
Is strange?
Maybe that's why there have been 200 in the first place?

None of us are to old to learn eh!
Grizzly