The whole factory service manual? If the '85 manual is anything like the '88 manual, it's around 1500 pages and full of images.
If you intend to do much work on the truck, I'd recommend buying a paper version from eBay or something; it will be the best investment you ever make in the vehicle.
Until then, you can get free access to pretty good service manual pages by signing up for an account at autozone.com