I'm not the most mechanically inclined person but I do try to do some of the maintenance myself. I have had to replace the seal shown in the picture a couple of times, probably because the dealer put too much grease in and blew it out. I have an arrow drawn to the part in question. My friend says I need a seal driver to properly install this. My question is what size seal driver mm/inch (if that is the correct name for the tool) do I need to drive the seal (new one) back in. Where do I get the seal drivers? Ebay? Online store? The seals are very inexpensive but I would rather repair small things like this than wait on service at the dealer which is several miles away. Also if you have any information on how tight to tighten the nut once I reassemble the front caster or any other useful info on this repair I would appreciate it. We made a seal driver last time and apparently we bent the seal a little bit because it is leaking some. Thanks for any help. And any advise as to where to purchase a driver for such repairs. As I said I have an arrow drawn at the seal in question on the picture below. Part #35.