Bongo Fury

Hi does anyone know if this is easy ie with an airbag? i hear you disconnect the battery for about ten minutes to make it safe then remove it as normal ?
Does anyone know if the steering wheel shaft is splined or hexagonal ?
I need to turn mine as the bloody wheel cant seem to be centralised despite 4 wheel tracking ..... or the garage hasnt a clue it maybe the latter????????? HELP

It looks splined here rather than hex but its not that explicit on the diagram http://lushprojects.com/bongopartsmk2/c ... no=.html#3