Thanks Richard for your reply and PM.
On pressure test the holding plate held 104psi for 24 hrs so the origin of the goo at the point
the low pressure leaves the tank (bottom) to the accumulator is a mystery.
My boat is a complete rebuild
from keelson up, but all the hardware
is as removed from the old and has been sitting for ten years with orifices taped up.
So, I will replace the hoses & copper lines, flush the expansion valve and holding plate & accumulator refrigerant lines, and perhaps do the seals
in the compressor
The condenser is questionable it worked before but at very least complete de-scale & pressure test. New dryer & sight glass.
I would like to set myself up to be able to re-gas if necessary so will purchase
a manifold & gauge set up. My sanden sd 508 has the flares so will need those connections.
Does this sound like a reasonable approach?
I have do have welding and bending gear
Thanks again Richard; your dedication to the science/art of refrigeration
is epic & appreciated worldwide.