3.15 LSD seal refresh and clutch pack question

[Wcsco123]

Wondering what the procedure is regarding changing the o-rings and shaft seals on this differential... Other than setting the input flange pinion bolt torque to 137ft lb and preload checked for the required 15 inch pounds, Will I also need to have the backlash checked if I start pulling the ring gear assembly out to change clutch packs?

I am currently in the process of doing a differential swap into my 540i

[shogun]

see on these website under fixes driveline http://bmwe32.masscom.net/
I never changed anything else, just the seals output and input

[Wcsco123]

Thanks for the link!