Spindle pulley locked onto shaft!

[Smokie555]

Hi, has anyone any experience with this spindle motor pulley on my Bridgeport Interact 1 series 2. I am changing the motor but wanted to reuse the pulley. I can get a 3 leg puller onto it but even with heat and a ton of force it only moved 1/8 of an inch and is now locked solid. It has two grub screws on the top (pic) which I have unscrews but wondered are you supposed to remove this type with an hydraulic feed contected to these two grub screw holes?
Any help appreciated.

[m_c]

Are 100% sure there are no grubscrews on the side?
And if there is, that they've not been doubled up?

[Smokie555]

I'll check if they are doubled up in the morning m_c, I wonder what the grub screws are there for? Def none on the side.