Originally Posted by greg409

The center diff in the transfer case is an "open" diff with the ability to manually lock via linkage.

If it's in "unlock" and the truck drives in fwd mode, that means the rear output is broken/locked up.

If you have BOTH rear wheels off the ground and turn the pinion shaft, both wheels will turn the same direction, as you are only turning the ring gear/ carrier set.

My bet is the transfer case is biffed.

luck,greg

Originally Posted by disco524

Lordmorpheus,

Just turned the pinion again and to my amazement noticed both rear wheels are turning in same direction (reverse or forward) instead of opposite of one another.

So here's what we got:
1. Vehicle drives OK using front wheel drive only.
2. Rear prop shaft is connected to transfer case and not to differential. It will not manually spin.
3. Manually spun pinion will turn both rear wheels in same direction
4. Jacked up all wheels, turned engine, put on drive and front wheels spin, but rear prop shaft does not spin.
5. Tried engaging and disengaging all combos of CDL/Tranny and prop shaft did not spin. With CDL engaged, front wheels did not spin though. CDL does make "engaged noise" when selected.
4. I'm hoping for a quick adjustment, but preparing for the worst.

Conclusion: So it appears that although I have a free spinning differential, once I connect rear prop shaft, shaft will not let diff spin.

Thanks for sharing your knowledge.

Originally Posted by disco524

Hello Everyone,

I've gotten much useful advice & solutions from this forum. This is my first post. I'm hoping I'll be able to lend expertise down the line as I'm learning more about what makes Disco's tick on a daily basis. I've overhauled two DII engines already.

I just purchased a 2004 Disco II (bank repo pulled from repair shop) and heard a loud thumping noise coming from rear after I drove over a bump. I jacked-up truck and noticed rear prop shaft was disconnected from rotoflex and tied to the chassis with rope. It appears to be a new prop shaft that repair shop may have been in the process of installing when tow truck showed up. It is connected to transfer box. Anyway, I went ahead and connected to rear differential rotoflex and Disco will not drive front or backwards. It feels like front drive is trying to move, but rear drive won't let it. I don't want to force it and make it worse.

I went ahead and disconnected again and I'm able to drive Disco on front wheel drive only. No Manual or Sport lights blinking. No fault codes on Hawkeye.

Anyone ever experienced this or have any suggestions on cause & solution?

Thanks!

Originally Posted by disco524

PROBLEM SOLVED!!

Emergency brake shoes were way too tight with handbrake released. Adjusted and truck is back on the road.

I'm sure that the most honest tranny repair shop would have eventually concluded that and would have called me and said:

"I've got good news for you, transfer case is good it only needs to be rebuilt for $450.00"

Thanks everybody for your most valuable input and newly established friendships. I hope someone with this same problem will find the same easy resolve before spending big bucks.