I had the same problem.
I finally found that the only solution was to romove the assembly, complete
with the half-shaft, then press out the shaft in a hydraulic press.
It took 8 tonnes of hydraulic pressure for it to let go, but heating the hub
could help.
The reason for this is that due to the tapered end to the shaft, the
components get kind of welded together.
It is a messy job to do it this way, but yoy may have no choice.
You'll need to remove the retaining nuts from the brake assembly backplate,
after brake dissassembly. You'll need new gaskets for the backplate to axle
joint, and should probably also replace the chevron seals.
Good luck,
Julian.
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