Originally Posted by
joe4702
I just lubed and adjusted the Ultegra 6700 hubs on a new wheelset. The front cones were 13mm, rear 15mm. Both the front and rear lock-nuts were 14mm and required a cone wrench as well (regular wrench did not fit).
My Shimano WH-R560 prebuilt wheels require a 17 mm cone wrench for the front wheel's locknuts but can use a regular 17 mm open end for the rear. Strange.