I think many folks are missing the point of having full floating axles when considering axle or differential failures. It's far easier to disable an axle on a land rover and get to safety, get to town, or at least get to a spot to camp to perform repairs than it is to do all of these repairs in the field or on the trail. Even if I had the spares, I would rather get the convoy to camp and perform the full repairs there to let others have a chance to stretch their legs.
There are few situations that can't be driven out of in 2WD with the diff-lock engaged. I've seen DII's, D1's, and RRC's all limp home just fine with busted drive train parts. CV's, axle shafts, and busted differentials. In many instances these were several hour long drives back home over the highway. A certain '96 D1 I know of :elkgrin: made it home on the front axle, in diff-lock high range doing about 50mph.
For the rear axle, just remove the axle shafts and drop the rear propshaft, and plug up the holes with a shop rag to keep debris out. If you've removed the inner oil seal to fit larger axles, you want to pay attention to being off-camber and losing 90wt.
On the front - it's the same. pop the caps on the drive flanges, remove the circlip, and remove the flange. drop the front propshaft, engage the diff-lock in high range and get yourself to a spot where the repair will be more comfortable for not only you, but on the rest of the group, too.
cheers
-ike