It is amazing how much filth can accumulate on a vehicle. The underside of our 'Burb looked like it had not been cleaned since its birth in 1971. So we had to spend a couple hours cleaning before we could even get to the bolts to remove the transfer case. After we got the T-case out, we unbolted the SM465, which didn't want to budge. So we attached a ratchet strap to the back of it and around the axle. After a bit of ratcheting it came free.