A12, it's not that shops want JD information for free, it’s that JD won't provide it at any cost.

We have a transmission at work from a JD tractor and getting any information on it is a challenge. It took a month to get a copy of the breakdowns so ee could order gaskets and seals. But even that breakdown shows things only as complete assemblies .

Clutch discs, piston seals, bearings are considered non serviceable by JD. If the clutches are worn you can't just get new ones to install for a few hundred dollars. No JD will sell you a complete clutch pack for 8k. Not to mention the delay in ordering that assembly because nobody stocks it.