Pully removal on a Denso Comp (Prado)

Hi "all".... i have a seized bearing on the ac compressor on my Prado, it is the denso compressor, fairly common, and i am hopeing i can remove the clutch and pully/bearing whilst still mounted in situ, the reason for that is i can retain the gas as it still has gas, if only i could get it done at a workshop i would but the nearest is Mount Isa 500klms away so i will try ANYTHING first ....
Now i have done them before but on an earlier model/type car and different comp, this one has a small 10mm bolt retaining the clutch to the main shaft, in theroy you remove the bolt and the clutch slides off, access the bearing after removing the circlip ........ i have removed the 10mm bolt but can not budge the clutch, i have managed to buy a s/h compressor off e-bay and even found a very good u-tube vid on the complete strip and re-build and they simply slide it off ... mine will not budge so i tried the e-bay one and it is the same, now i have discovered that it has a slightly larger thread tapped into the clutch around the hole the 10mm bolt goes into, this leads me to assume there is a puller assy for it..... thread is on the clutch assy, bolt thread is in the comp shaft ......so is anyone able to shed some light on how it comes off, i really dont want to have to send the car in just for the bearing .. am checking l-cool but no luck so far, i dont have muck luck with there search engine
Ta in advance (again)
Joe