You can get manuals for most appliances at
Chris Bryant's Website. You can gOOgle and find manuals for generators, at least ONAN. Chassis owner manual is available from Ford.
The missing piece is the RV manufacturer's "coach" brochure. That's about all you'd need somebody to scan to .pdf or copy and mail to you. I've sent and received manuals that way.
But don't expect too much from an RV Owner's Manual - In most cases they are so generic that they aren't all that helpful. Example - I have the manual for the Jayco in signature. Wanted to find the Fresh Water Tank. Couldn't so I looked in the manual. Manual said "under furniture or a cabinet." I'd already looked there. Finally found it on the BOTTOM side of the floor, crossways, above the Rear Axle.
This book
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by Bob Livingston was very helpful to me when I started on this. It's a good primer about the whole RV, including systems and chassis. Shop for a used copy. Your coach is 10-YOA so you don't need the latest. One close to your coach's age could be better than the newest.