I just got done packing my bearings and had little luck with pliers/channel locks. The nut was chewed up from the pvs. owner. I used a screwdriver and hammer. Later I saw the appropriate tool available at 4WD Hardware for 10 bucks, but NAPA or other parts store will likely have them also.
Buy new nuts (for next time) and the wrench. Having the right tool can help with ease of subsequent jobs (which you know should be done periodically anyway). Plus, if you ever sell your Jeep, the buyer knows you took care of it which helps substantiate your asking price. <img border="0" title="" alt="[Wink]" src="wink.gif" /> There are always tools that go with a sold vehicle, and that's one of 'em.
As far as how hard to torque/hammer 'em, ya got me there.... My Chilton's manual doesn't have "finger tight" as a legitimate torque measurement.