Yup, I just yesterday had some success with a heat gun.
Corroded up boat seat swivel. Aluminum post stuck in a cast aluminum housing since 1978 and outdoors around salt water the whole time.
A project that I never should have started by the way.
Back when I did this kind of thing for a living, I got pretty good with the heat. Most boat motors are held together nicely with corrosion.
Good job on the steering wheel puller.