Originally Posted by Tabmo
I cracked the nut... I guess that sounds bad! I found the wrench that fits. It is a 5/32" inch allen wrench. Thanks for everyones input. I appreciate it!
My next suggestion after you found the allen key that fit was too spray some lubricant down into the hole to loosen up the truss rod before you tried to turn it. But I guess that's all water under the bridge now.
If its a single acting truss rod, you may be able to unscrew the nut and remove it. If it's a double acting truss rod and you are able to loosen the nut, it will add relief to the neck. Also, if its a double acting truss rod, the only way to fix the neck is to remove the fretboard. Is the relief out of spec on the neck and is that why you were trying to adjust it? If it's playable and the relief is OK, then I would leave it alone.