I got a set of older Trek MTB rims from someone and they cleaned up quite nicely on the outside but the slots for the cone wrench are really far apart. I have pairs in 13mm through 16mm and the 16mm looks like it's just a mm short. However, when I took it to the shop to figure out exactly what size, the mechanic told me I needed a 19mm. I can't believe it.
Was this a common size about 10 years ago for wheels with cartridge bearings?
I was able to get one side off using a pair of crescent wrenches but it was a pretty ugly operation. I pried up the seal, flushed out all the dried up grease and put some fresh grease in there and that side is good. But I can tell I'm going to need to get the other side off as well.
The hub says "System 3" on it. I couldn't find much information about them online. The only thing I know is that once cleaned up this set of rims seems like it would be much better than the joytech rims I currently have.