from one ase master to another, I just replaced my LR axle shaft on my 1984 300DT.
Easy, drain rear axle, remove rear diff. cover, remove 'c' clip from axle shaft (in diff), raise up diff with a tree stand as high as it will go, remove bolt from other end of axle, 13mm head. punch the axle thru using a brass punch. when removing the axlewatch for the spacer shim against the diff side bearing. Assembly is the opposite of removal(always wanted to say that)