Depending on the age of the loader you might find the manual on the JD web-site.
Operator's Manuals for John Deere Equipment
There are specs for the 520 and 540 loader. On some of the newer loaders 300CX have to dig a bit "Transporting a Round Bale". Granted this is not the level of detail I am guessing you are looking for, but it is something.
"What model are you wanting to know BTW"
I wanted to compare a whole raft of loaders with deere and kubota. Not sure how to research this one if the info is not available.
Instead of a "whole raft", list the JD loaders you want specs on someone may post them. Give us a chance to help.
The manual for my 640 lists them, I also have old brochures with many models and their specs.
Implements & Accessories - Product Catalog Page 6 and 7 may have what you are looking for.
This list is about 4 years old, maybe it's what your looking for.
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