Of course.
You're gonna have to take it all apart anyway to replace the inner seal (again, get the Marlin HD ones), and the point is to clean everything thoroughly, replace the MOLY grease, and I would do the gear oil, too, if it hasn't been done in a while. Or at least top it off when you're done.
Oh, btw - VERY IMPORTANT! ... When you take stuff apart make sure you carefully remove and keep TOGETHER the shims that are on the top and bottom of the knuckle (trunnion bearing caps). Put each set into a separate bag and label them FLT, FLB, (front left top, bottom, etc) and put them back in EXACTLY as you found them. If the knuckles have never been apart before, this will get them back just like new.
There are some vids on youtube - it would behoove you to watch a couple of those first so you know what to expect. It's not hard, just a little confusing the first time out. Wheel bearing races come out easy enough with a good brass drift. You did buy one, didn't you?
Good luck. Bon Chance. Buena suerte