pinion dana 80 bolt torque question - Ford Powerstroke Diesel Forum

 
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post #1 of 3 Old 09-20-2009, 07:07 PM Thread Starter
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pinion dana 80 bolt torque question

I finally got my new (to me) rear installed. Its a dana 80 dually from an 03. The pinion bolt torque spec is 470 foot pounds. I used an impact to tighten it becauce i had to swap yokes to mate with my driveshaft, 03 flange to a 99 yoke. I got it at least 250 pounds because I checked it with my clicker torque wrench. It only goes to 250. I have a small amount of clunk when putting into drive then reverse etc.
Lets say for conversation sake i am 170 foot pounds short on the torque, would that not have pressed the yoke down far enough onto the pinion shaft and left a bit of in and out play? I know the yokes are not really press fit but they dont slide on by them selves all the way. It needs to be pressed on. I am not trying to overtighten something to fix a problem. i am just wondering if not going to full torque could leave a bit of play or is 250 plus enough? It drives great no more growl at speed. i am happy with it. Just wondering if a bit more torque could possibly tighten the last of the play?
please remember no crush sleeves in this, just shims

Last edited by melmount; 09-20-2009 at 07:22 PM.
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post #2 of 3 Old 09-21-2009, 02:43 AM Thread Starter
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bump.........
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post #3 of 3 Old 09-21-2009, 05:31 AM
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Yeah you need a torque multiplier, most good rental places rent them.

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