VISCOUS COUPLING in the Transfer box is SHAGGED .....Makes the wheels "Chop" & or "Grind" when turning corners
To PROVE it IS the VC drop the front Prop & go do some "figure 8's in a car park ..
NO gringing / Chopping .. VC FOOKED !!! ...
If yer pennies are tight (replacement is around £200 to £350 don't bother refitting the front prop just use it as "Rear Wheel Drive"
My Vc went & I drove 1000's of miles just using the back wheels & the front prop in me boot !!!!