Fitting FZ1000 Caliper to FZS600

[sinto607276]

OK so here is what i did ....

Close both bleed nipples...

Use compressed air blown in the brake fluid hole to push out the pistons - piece of material in the disc slot to stop them popping out initially...

Left one moves, right one not a jot of movement...

Left one i can remove and looks fine, and can easily re-seat

Right one just no movement...

I also did a test, open the Left bleed nipple and with the piston ALL the way recessed in air passes to the bleed screw, no such luck on the second piston, no idea what it means....

tried all sorts...

So the pistons are dry at the moment?
If so, before you do the air test, the one that moves ok, put a thicker block in there so it's less to move, better still if it can't move,  smaller bit in piston that won't move at the moment, then try the air again.
I'm thinking that the air is only giving good enough pressure to push out one piston, so needs to be directed to one piston only. Can you pull that piston out by hand or turn it at all? Is it free to move I mean?