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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Since my link didn't work and you didn't read the other thread i bumped for you. here was what I posted.
Originally Posted by Fris You have to make sure you retighten the big 32mm nut holding the flange the same way you remove it. If you tighten it too much or not enough you can mess with the backlash of the gears, or so I've heard.
Originally Posted by Dirtydog
10-15ft/lbs for an old crush collar like you have is what I have found out there for specs. Going the cheap easy route like you stated is not the correct way, but most garages will do it that way because nobody wants to spend $800 for one lousy oil seal repair. The reason is because the collar is suppose to be seated without the carrier inside the rear diff by the amount of rotational drag.
Now as easier way is to mark the nut and yoke. Then, count the number of turns it took to remove the nut. Replace the seal. Re-install the nut to the position in which you took it from. Tighten it a little bit (less than 1/8 of a turn) past the original markings. This is a better way to do things so to keep near the same drag as before. But the true way is to remove the entire rear diff guts and start from scratch! Of course i wouldn't go that route even if it was my own truck. i would just mark the nut, count the turns and be on my way. No actual need for torquing at that point.
The crush collar tightening is one of the most important things to do in a rear diff to keep everything harmonized.