Ok, the raider I bought was towed back to the previous owners house. WHen I picked it up he told me it hadn't been moved since it was towed. When I got in it the t-case shifter was in 4l. Right now I have the tranny/tcase assembly out of the vehicle. Is there anyway to check the transfer case functionality without cracking it open? Like if I put the clutch disk on the input of the tranny and shifted through 2H, 4H, 4L, would I be able to tell if everything is working? And if I do have to open it up, what should I check other than things that are obviously broken?

TIA
Mikhail

98 Grand Cherokee 5.9 (Using 10% of the nations gas daily)
95 F-250 (The other 90% of the gas)
95 Honda Del Sol V-tec (Corner Carver)