No sign in required. Start here: http://partstore.caseih.com/us/
1. On the left side of the screen, under the CaseIH logo, click on "Find Parts by Model"
2. In the center of this screen, click on "Find by Model"
3. On the left side of the screen under Find by Model are two icons, browse and search. Click on "Search" A box pops up, enter your model here. A listing of anything with that model will appear, click on the model you are looking for.
4. A group of file folders shows up on the left hand side of the screen. If you're looking at an older model there will just be one folder, so click on the "No Description" folder and your parts books should appear.
I agree, the "old" site was easier to navigate. The "new" site makes it possible to order parts online through your dealer and also integrates with an app for smartphones. Some people may have no use for this but it makes it very easy to look up parts in the field when you're away from the computer. It is actually designed with the farmer in mind. Hope this helps.