I use a 3 legged puller, plus hot air paint gun to warm the casing. It your going in that deep I would replace the bearing while your at it.
You need to disconnect the wiring and pull it through, ideally. Where the wiring goes through the casing is a possible entry point for water, sanitary silicon does the job if the grommet is mangled. On reassembly seal the bearing carrier, and also the outer casing with a small amount of sanitary silicon. The breather (buy the timing mark) should be clear, with a transparent tube up under the tank.