hi,

I'm new to servicing my bike. I've always let the shop do it but I have decided that I needed more frustration in my life so here I am!

I have worn components and need to change my chain and a couple of chainrings on a shimano triple FC4603 crankset. I'd blush if I had to admit how much reading I've had to do to even come up with the basic plan here....

my question is this....do I have to remove the crank to replace the middle chainring on this unit?

It seems to me that I do. I can get the outer/larger 50 tooth ring off no prob of course but the middle seems to have to come off from the back which would require removing the crank. Here is the spec for the unit I need to service:
http://techdocs.shimano.com/media/te...9830746319.pdf

I'm asking this in case there is some trick I can't see.

thanks
-Conor