Once it's on there, getting it off without destroying the gear is just about impossible. How have you determined the gear is "good"- - -no teeth missing, etc.? If you do manage to get it off in one piece, and install it on another cam eventually, you'll find it's going to be noisy unless it's also running against the same crankshaft gear it originally "wore in" with. Cut the gear off- - - -they're not that scarce or expensive. You also run a serious risk of breaking the thrust plate by trying to press the old gear off, and those things are hard to find and pricey!
Jerry
