Thanks Zebrafive! The diagrams help a lot. Can you share your source? I have a CD version of the service manual coming. Hopefully that will help. The tractor operators are using the bucket on the ground as a parking brake now. It seems unsafe to me.
I am volunteering at a horse rescue farm. As a former aircraft mechanic I am taking over maintenance on a John
Deere 3120 tractor. It's running well and all the functions are working except the parking brake. The maintenance has been somewhat neglected though.
The parking brake lever is...