Yes you can
remove the radiator without dismantling the whole front.
May be it's sufficient to remove the aux electrical fan only, so that there is space enough to thump the thermostat cover bolts.
Before you can dismantle the radiator, you have to remove the auxiliary and the viscous fan (mind left-hand thread of the central nut).
As I have renewed my whole timing stuff, I've even removed the radiator only .
