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  1. #1
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    Cone wrench size for a Shimano WH-6600 rear hub.

    Trying to overhaul the rear hub of a Shimano WH-6600 Ultegra wheelset. Front hub uses 2 size 17 cone wrenches. Rear drive side uses a 17 as well. The non-drive side needs a larger wrench. Since the double sided wrenches stop at 17/18, I was hoping someone knows the exact size of the non drive side nut so I can order just one wrench.

  2. #2
    Senior Member
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    I don't know the required size but is there a reason you need to remove both cones and locknuts? For most overhauls, I remove just one side of the axle hardware and leave the other side intact.

  3. #3
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    I worked on one for a friend and the left side needs a 20mm. Be carefull when installing the rt side inboard seal. I only goes in one way. http://techdocs.shimano.com/media/te...9830728264.pdf

  4. #4
    Senior Member
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    Quote Originally Posted by HillRider View Post
    I don't know the required size but is there a reason you need to remove both cones and locknuts? For most overhauls, I remove just one side of the axle hardware and leave the other side intact.
    i think the OP may want to adjust both cones to facilitate the swapping out of the freehub to one of different dimensions.

  5. #5
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    Thanks, will order a 20 mm wrench and get to work, and thanks for the tip on the right side seal.

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