Need Help Removing A/C Clutch - Kubota HSTC

[whitefacenh]

I have a Kubota HSTC with a failed clutch. I would like to remove and replace just the clutch assembly so that the system remains sealed. Any tricks to removing?
I was able to get the nut off but can not get the clutch off the shaft. There doesnt appear to be an spring clip holding it on. I dont see how a puller would work unless the clutch and pulley come off as a comple unit? Anyone have experience with this? Thanks in advance for any assistance...