Sounds good - you've done your research!
Couple of pointers:
* Remove the fill plug FIRST on the front diff. May not happen to you but nothing worse than removing the drain plug then not being able to get the fill plug out. Same goes for changing engine oil and transfer case fluid. (This tip applies to ANY vehicle - this isn't Jeep-specific.)
Thanks, I tried to look around before posting. Great advice!! That was the sort of tip I was looking for!
* The front diff fill plug uses a 3/8" ratchet extension; the drain plug is a 10mm Allen wrench
Ah, so the fill plug is bolt like? I will have to go look for it. I just assumed it was something like the oil cap.
* Once you've removed the rear diff cover use a spray can of brake cleaner on the inside of the diff. Spray all the gears and bearings till they're nice and clean and give a good spray to the magnet on the bottom so there's enough fluid to wash away any metal particles that are attracted to the magnet. (If there are a few tiny metal particles attached to the magnet no need to worry - that's what the magnet is there for.)
OK, so spray, let it sit, then wipe it all out? Or do you mean to just spray it and let the spray run out of the diff?
* Fill both diffs with oil until the fluid just starts to drip out of the fill plug. Use 85W-140 standard gear oil in both diffs. No need to spend the extra on synthetic. I know the manual calls for synthetic but folks on here with far more knowledge of the correct oils for differentials always recommend standard dyno oil instead of synth.
Agreed. Everywhere I looked it seemed like the pros were recommending regular, which is fine by me (sounds like the synthetic was noticeably more).
You should also change the fluid in your transfer case. It's easier than the diffs and just as important. It uses just under two quarts of ATF+4 transmission fluid.
OK, sounds good. I haven't done that either, so I am SURE it is overdo. Thank you for the heads us.
Let us know how your first diff project turns out!
Will do! Thanks for the help. Definitely seems doable, so I am looking forward to getting a little dirty. Any advice/words of wisdom on the RTV?