The banks likely has no interest in it. They have so many other issues than a 1977 tractor running or not.
The advice to check for a lien is a good one. If no lien just claim it.
If it ever comes up submit a bill for storage that must be pd before you release it. Storage would include routine maint and repair bills as you don't allow non running junk in your yard.
I'm basing this opinion on abandoned boats and rv's left in my storage lot. Some had bank liens that were released to me in lieu of storage charges. Some banks pd the storage fee and came and got the equipment. Some I never heard from and just kept or sold the trailer. Storage fee's still accruing of course.