It is my first time tearing down a motor, so please be patient with me.

I am stuck on removing the stationary gears. It looks like the backside should be easier to get off(and maybe where I should start from?), but I just can't get it. Is there a specific puller tool that anyone can recommend me for this?

 

Looks like this got approved way after I finished tearing the motor down. I now understand I do not need to remove them before getting plates apart.