I bought a new set of wheels (https://estore.bachmanntrains.com/index.php?main_page=product_info&cPath=69_671_148&products_id=6021) but when I try to put them on the axle, they do not slide on easily onto the axle. Is there a procedure for putting the wheels on the axle?
I have to ask a second question, do you have a quartering jig?
Thank you for the question. I do not! Any recommendations on which one to get?
Replacing a steam locomotive driving wheel is a high precision process, the drivers need to be exactly quartered one side from the other, all exactly the same, or the rods will bind.
https://dccwiki.com/Quartering
Go to this website and see what they have.
https://nwsl.com/
You will need a quartering jig, but you probably also need a wheel press. If you don't have any luck with NWSL, try Micro Mark, another well-known Model Railroad tool vendor. All of these vendors are very friendly and accessible on the phone if you need help.
I don't know what locomotive you're working on or which scale you are in, but you may need to insulate the wheel from the axle. That's something I can't answer but someone else on this forum probably can.
Why are you replacing the wheel? Is something wrong with it?