I had a broken right hinge and replaced it using this guide. The pictures were amazingly spot-on and clearly illustrated the procedure to be followed.

The one thing I did not find (perhaps because Apple Support had previously opened this up to test the hinge) was the "plastic hinge guard" - would be great if you folk could add a pic of this.

The other thing I found a bit hard was the final separation of the display unit and its reattachment which I got through kind of by trial and error. But no biggie. Thanks for this guide - it was MOST helpful!