| Not so easy, this one, I am afraid. If it's leaking on the pulley side of the cam you will have to remove the cam as it comes out with the bearing and carrier. If it's the other side you can pull out the carrier without removing the cam.
Removing the cam will require quite a bit of disassembly of the head, like removal of timing belt, removal of at least some of the rockers. It's quite involved but possible if you are really good at this sort of thing. Caution is advised. | 
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