The cam gear can be pulled off. A press is the best way.
I will say this,the gear really should not be reused.
If using a press, use a propane torch to heat it up, it will swell in size and may not remove any metal when pulling it off. To put it back on, heat in oven to 475 for 5 minutes, have the cam ready and a soft deadblow hammer. Have all parts ready and reinstall, use the hammer as needed.
The crank gear will need 2 holes drilled in it and tapped for 3/8 bolts, than a puller can be used. Stuff the front area and oil pan opening with rags to keep debris out.
I like to drill all my crank gears before install for this reason. Tom
