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Dana 70U hub bearing nut torque

 
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Old 01-20-2019, 06:24 PM
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Question Dana 70U hub bearing nut torque

Been away for awhile due to work. Got back, and have to change rear brake shoes, so I can get it inspected. My problem is, my "books" are 3 hours away, lost in a storage locker. Can anyone tell me what the torque is for this bearing nut? '85 F250.
 
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Old 01-20-2019, 09:52 PM
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the book says torque it 120-140 ft lbs, and then back it off 1/8-3/8 turn. I have never messed with this setup, but it must have a locking tab or something to lock the nut once you back it off?
 
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Old 01-20-2019, 10:48 PM
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Originally Posted by Franklin2 View Post
the book says torque it 120-140 ft lbs, and then back it off 1/8-3/8 turn. I have never messed with this setup, but it must have a locking tab or something to lock the nut once you back it off?
Are you sure that it is FOOT POUNDS and not INCH POUNDS?
Or am I thinking of the wrong part? Hub bearing I am thinking wheel bearing?
If so that I think is a lot of foot pounds on a wheel bearing.
Dave ----
 
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Old 01-21-2019, 08:30 AM
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Originally Posted by FuzzFace2 View Post
Are you sure that it is FOOT POUNDS and not INCH POUNDS?
Or am I thinking of the wrong part? Hub bearing I am thinking wheel bearing?
If so that I think is a lot of foot pounds on a wheel bearing.
Dave ----
That is foot pounds. They are using that high number to seat the bearings and then they are backing it off. If you back it off 1/8 turn you are losing most of that high poundage. They tell you to do the same thing for the front wheel bearings. Tighten them up and then back the nut off till the cotter key lines up. The bearings and nut in the rear on a f250 are a lot bigger than on the front spindles.
 
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Old 01-21-2019, 06:18 PM
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Thanks, Dave. I appreciate it. I knew it was high, but I have CRS, so I was lost on an exact number. Btw, system says I have to "spread the love" before I can rep you.
 
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Old 01-25-2019, 05:56 PM
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Originally Posted by Franklin2 View Post
the book says torque it 120-140 ft lbs, and then back it off 1/8-3/8 turn. I have never messed with this setup, but it must have a locking tab or something to lock the nut once you back it off?
Yes it does. It has a funny looking 'wedge' that is driven in to lock the nut in place. See pictures.


 

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