M-135 wheel bearing adjustment and brg cup seating

when I removed the wheel bearing, someone used a chisel to tighten them . I'm sure that there must be a wrench for this nut,so it can be torqued properly. where can I buy one?
Also the manual uses a replacer to seat the bearing cup, would like to buy, but if I can't, and I make one, what material should I use and what should the OD be?

Yeah, seems that the manuals indicate there is a remover/replacer for everything on these trucks. For the wheel bearing nut, I just made a sheet-metal socket, works like a charm. As far as the bearing race, I just set mine with a punch.

Someplace I read that the standard Army tool for wheel bearings was a cold chisel and from the looks of my M35A2 and M135 I believe it.