Can the leaks be fixed? Yes. Is it easy? Not really. Is it gonna take a bunch of special tools? No. Will it take some time? Yes.
1, Drain it. I like to pull the bottom bolt on the derby cover.
2, Get it up on some jack stands. Axle stands are fine, but might get in the way.
3, Pull the axles(yep, that is a PIA, but needs to be done)
4, Remove all of the nuts on the carrier side, and pull the Derby.
Did the studs stay put? Good. Did any spin? not so good. The studs are pressed just like the ones on a brake drum. With those neat shouldered bits that "bite into the outside of the hole. So far this is just work. If the studs are fine(not loose in the housing) Just clean(yep I said that) and inspect the gasket from the carrier to the housing. Most of the time you can push the whole torque tube forward a bit and see between the banjo and the carrier. Do not push it off the studs(darn thing is heavy)Reseal,(the Loctite stuff is very good for this kind of job) An. a d get ready to slide the whole mess back into the banjo. You can walk it back with the nuts, but go slow and do not put a lot of pressure on any one nut. Yes it is a lot like the pattern for putting a wheel back on.When it is back in contact with the Banjo, pull the nuts off 1 at a time and seal the bottom of the stud threads and around the base of the carrier. Put the nut back on and snug it in place. Repeat for each nut. Then torque it properly in stages. Reinstall the axles(yep just said that like it was easy), and reseal the derby. You might need to replace the gasket here. Add Teflon tape, or paste to the bolts on the Derby( no reason to fix the front if the back is gonna leak). Refill and drive it. The gasket on the front is tough to "make" It is a precision thing that lines up the axles in the housing. But it is not that hard to fix and seal up.
5, If the studs were loose. With the derby cover off, you might be able to reach the "heads" of the studs with a large punch. That and a big hammer will "press" the loose studs into the housing. Do not "pull" them into place.If they are seated and loose, then you will have to address the studs to Banjo fit in some other(much less fun) manner. As long as you can seal it, and get proper torque on the nuts, it should be fine. Any other thoughts would be most welcome.
