I just made this post "I was a bit confused about the torque on the U bolt so I called Dexter and spoke to Glen who is the rep who is always at the Fall rally'
The 7 K axle uses a 1/2 U bolt and the nut size is 3/4.That is what confused me. Glen said The torque should be between 45 and 70 preferably toward the higher end .I mentioned I thought he said 60/65 at the rally and he said that was a good number.
NOW this is what I do NOT remember him saying..THE TORQUE READING SHOULD BE WITH THE WEIGHT OFF THE AXLE.WE SHOULD JACK THE RV OFF THE GROUND BY THE FRAME FOR THE READING TO BE ACCURATE. I did not have that note in my book from the seminar.
Now I am looking for sound engineering data on the subject. We have many post but no sound engineering data.If I had sound engineering data or could offer it I would never have done the post.
we will get the answer and we will have gained knowledge.
Found this today
http://www.suspensionspecialists.com/tech0004.html#2
Note there is NOT a mention of tightening the U bolts with the wheels off the ground...You would think these folks would know HUMMMMMM