front loader washer - Lg Tromm

Hi there:
We bought the new bearings and seal to the Lg Tromm model # wm2277hw. My husband has been trying to remove the inner metal tub from the outer tub to remove the old bearings and seal. We have the hammer and punch but the shaft does not come out. Do we remove the shaft first then the bearings and seal. Please advise us on how this is done. Everything is apart.
Thank you
Dawn
dawnsa12@Gmail.com