1994 f150

have a problem. my sons f150 has a bad leak. he was changing the front shocks on the truck and the front pumpkin started leaking. there is no way to open it and change gasket. it is up in the frame. the truck is a 4 wheel drive. we do not have the equipment to remove everything to fix it. added more gear oil and it pours out around the axle. is there any other way to stop the leak other then removing everything. if we have to put it in the shop how much for the repairs in general are we looking at. i know its a long shot but thought i would ask the experts. thank you.

Maybe this will help? https://www.youtube.com/watch?v=CmI4yZIYJgI

thank you. looks like its going to the shop.