You know RogG I was thinking the impact gun might just get it loose. I think the most important aspect of removal and reinstallation is making certain it stays in the EXACT same orientation. I cannot tell from the parts diagram IF there is a part of the design that makes that happen OR if it is up to the expertise of the mechanic. I thought I would scribe a line from the center of the shaft onto the cam belt gear so I could better relocate the thing when reassembling.
If anyone reads this WHO has ever replaced the cams and has taken these off, please share your knowledge on this!