If you're interested, I have a copy of the Allison Service School Handbook for V-1710 Engines - Models E and F. I could try to scan it, but someone would have to help me post it.
I also have the Packard built Merlin engineering drawings on microfilm, but I have not gone through them in detail. Sometime there are manuals or engineering procedures included in these type of drawings, but again I have not gone through the microfilm in detail. If there's sufficient interest, I'll spend some time to look.
Bill