To be honest, I never looked at all of the schematics, but it is a lot different set up than my 480C. Personally, if it were me, I'd be getting a shop/service manual. I have one for mine, which is an OEM manual. It's like 4" thick, and covers every repair on the machine. They are well written, and very descriptive in repair procedures, and have actual pictures of components. Worth their weight in gold when doing repairs.
I got mine off ebay, I took the liberty of doing a search for the 480F manuals on ebay. There's more than several service manuals listed. Some are OEM originals, and a couple reprints. I prefer OEM originals, due to some reprint quality, but there is a pretty good deal on a reprint. If you decide to purchase one, let your conscience be your guide, whether to spend another $50 more on an OEM manual. Mine had a few smudges from being used in the shop, but nothing bad enough to cover any wording, or pics. I've probably added a few to it myself.
Here's a link to ebay, and the 480F manuals up for sale.
case 480f backhoe in Heavy Equipment Manuals & Books: Search Result | eBay