I have old Cvhe centravac service guide cvhe-sg -2. Could help you.
I can send you .
What is your email ?
You Have mail...
If you have a digital copy of SG1 & or SG2, I would really appreciate a copy. I sent you a parts breakdown, dis-assembly & re-assembly manuals of the latest version that I am aware of. Although, they only cover the compressor section.