[jeepmanjeff]

Quadratrac is primarily a front wheel drive system with rear wheel drive assist via a chain and clutches inside the transfer case. I doubt the transfer case is damaged, although this may be possible. I would install the front drive shaft and run it. Changing the fluid with an additive is also a good recommendation.

The transfer case is simple to tear down and fix - much simpler than a gear drive in my opinion.

The most common thing with it is chain stretch.