Look for a 1997 Ford Truck F53 chassis manual on ebay, or google that model and year to see if Ford or other manual printer offers a book for that year. if you have your front and rear axle GVWRs from the lables on your motorhome it may be more specific, considering ford may have source the front axles from different manufacturers or designs according to capacity.
a quick search found a link i didn't follow it but as an example
1997 Ford F-53 Motorhome Chassis Owner Manuals
https://www.ford.com › support › vehicle › owner-manuals
Find your Ford Owner Manual here. Print, read or download a PDF or browse an easy, online, clickable version. Access quick reference guides, ...