It is my understanding that the 340's have a "5000" lbs hitch because of the transmission limitation. I am also told that the hitch can handle more than 5000 lbs. I was not told how much, but they said they didn't have stickers that said 7500 lbs (you could probably pick a number between 5000 and 10,000), so that is why they used the 5000 number. The 10,000 lbs weight sticker maybe an error. You might want to contact Freightliner Customer Service for advice.
Finally completed all State visits in August 2011 with a trip to North Dakota.