Just noticed a rubber pipe coming from the rear diff which is hanging down!The diff seems to have 2 breathers I assume,one is still in situ the other is coming from the front of the diff ,drivers side and it seems to be shaped to go upwards and forward.Where to I don't know as it appears to have sheared off with the connection rusted up and still in the dangling piece of rubber hose
Any ideas would be welcome

One is a breather & one will go to the difflock pump above the axle ( on the chassis)

Cheers Al, just been back out to the truck and it has sheared at the connection to the pump.Need to source another pump or try to weld on a fresh piece of pipe to connect the ends

Did you get this sorted rab?