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Old 01-04-08, 01:17 AM   #1
h2o_polo_boi
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which cone wrenches for ultegra hubs???

The stupid search function on BF is acting weird and doesn't work!!! I'm sure this may have already been answered long ago but I have a set of Ultegra 6600 hubs that I want to learn how to service. The LBS i went to were not helpful. They told me I need to buy 2 sets of cone wrenches (they wouldn't tell me which unless i bought it at their store which was pretty expensive).

I've heard 13, 14, and 15mm is all that's needed. But looking at the lockrings, it looks like I need another cone wrench since a open wrench will not fit. Also, there are rumors that cone wrenches need to be filed in order to fit into the cone and lockrings because Shimano made them so thin.
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Old 01-04-08, 07:46 AM   #2
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Get a full set of 13mm-17mm cone wrenches, then two double-ended 13/14 and 15/16.

You could probably get away with just two double-ended, but you might be cutting knuckles if a locknut is too tight.

Buy Park. You'll only cry once.
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Old 01-04-08, 07:52 AM   #3
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I only have experience with Shimano XT hubs, so this might not apply, however, I can confirm thickness problems at least with the Park "pro" cone wrenches. If I remember correctly, the problem in my case was with the locknuts on the front hub. Instead of having wrench flats that extend through the whole thickness of the locknut (which would allow you to use an adjustable wrench on them), shimano just cuts a thin (too thin) notch behind the locknut face that will only accept a cone wrench (on XT I think it's 15mm on the front and 17mm on the rear). Whatever the right size is for Ultegra, you will need two of them...one to hold the locknut on one side while you tighten down the locknut on the other side.

Anyway, as I said, my high-end Park wrenches were too thick to slip into this notch on my XT M760 front hubs (I don't recall having a problem on the rear for some reason...maybe the notch is thicker). However, I have one of the cheaper Park double-ended 13/15mm wrenches, and that fits just fine. So you might want to give one of those a try. Also, Shimano does sell a few shop tools (such as cable cutters) so you might want to check and see if they also sell cone wrenches, which I would hope would work with their own hubs.
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Old 01-04-08, 08:06 AM   #4
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What vintage are your hubs? Older "8-speed" series Ultegra (6400) and 105 required a 13 mm cone wrench for the front hub and a 15 mm for the rear and the locknuts were accessable with a regular 17 mm open end or box.

Dura Ace 9-speed (7700) hubs require a 13 mm and 14 mm cone wrench for the front hub and two 14 mm cone wrenches for the rear. The locknuts require cone wrenches, unlike the earlier hubs.

My recommendation: buy a 13, two 14's and a 15 mm cone wrench. I have never come across any Shimano hub that requires a 16 or 17 mm cone wrench. Also, buy the Park single end, black wrenches with the blue plastic covered handles. Do not buy their double end chrome wrenches. If you want double end wrenches, buy Campy's. I've never run into a thickness problem with any of my Park wrenches.
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Old 01-04-08, 12:51 PM   #5
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What vintage are your hubs?
Ultegra 6600s. The newest ones that are 10-speed compatible.

edit: just checked with multiple bike shops who said i would need a 13mm, 15mm, and 17mm. No 14mm. They said I don't need 2 of anything so now i'm confused. I think I'm going to grab a pair of calipers and check.

Last edited by h2o_polo_boi; 01-04-08 at 12:58 PM.
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Old 01-04-08, 01:56 PM   #6
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I have those hubs. You need two 13mm cone wrenches for the front hub and two 15mm cone wrenches for the rear hub. Also, an axle vise would be very helpful. I have two 13/15 double ended wrenches because I wanted to save money, but the single-ended wrenches are nicer to use.
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Old 01-04-08, 03:04 PM   #7
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Quick and dirty axle-vise: Get a nut from Home Depot that fits the axle. Hacksaw through one corner entirely. Thread that onto your axle, and clamp it in a bench vise such that the cut corner is between the jaws.

$0.05 solution
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Old 01-04-08, 04:52 PM   #8
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Quick and dirty axle-vise: Get a nut from Home Depot that fits the axle.
The problem with this suggestion is Home Depot and Lowes don't carry nuts with the right thread. Most common front axles are M9x1.0 and rear axles are M10x1.0 threads (Campy is M9x26 tpi and M10x26tpi).

You won't find metric nuts in these diameters with the right thread pitch as these are very fine pitches for the diameter. Spring the few $ for Park's axle vise.
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Old 01-09-08, 01:04 PM   #9
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Buy Park. You'll only cry once.
No argument that Park Tool is good, but I prefer Hozan cone wrenches. The flared jaws make locating the flats so much easier, and I like how they fit the hand.
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Old 01-09-08, 01:10 PM   #10
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I have never come across any Shimano hub that requires a 16 or 17 mm cone wrench.
WH-R540 and WH-7701 require 17mm, front and rear. I wouldn't be surprised that WH-6600 does too.
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Old 01-09-08, 01:15 PM   #11
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Stein's Hub Axle Vise is designed specifically to allow adjustment of hubs with the quick-release skewer in place and tensioned. And only $11:

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Old 01-10-08, 08:41 AM   #12
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WH-R540 and WH-7701 require 17mm, front and rear. I wouldn't be surprised that WH-6600 does too.
Do they require a 17mm cone wrench? I have several older Shimano hubs that have 17 mm locknuts but these are accessable with a regular openend or box wrench.

From the above postings, it seems Shimano has played around with many cone and locknut sizes for their newer hubs.
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Old 01-10-08, 09:29 AM   #13
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It seems to me my (older) LX hubs use a 16mm cone wrench. I haven't repacked them in a while so I could be wrong but I am 90% sure they do.
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Old 01-10-08, 10:05 AM   #14
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Not meaning to hijack the thread, but could you good people tell me what size cone wrenches to service 10-Speed FH-7800 Dura Ace hubs?

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Old 01-10-08, 10:09 AM   #15
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the most common size is a 13mm for front, 15mm for rear, and a 17mm locknut but you can use a normal wrench for the locknut. my shimano m475 disc hub has a 14mm locknut for the front though.
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Old 01-10-08, 06:40 PM   #16
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hey guys i got my park tool cone wrenches yesterday. 2x13mm and 2x15mm. They all fit fine. Thanks!
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Old 01-14-08, 05:02 PM   #17
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Do they require a 17mm cone wrench?
Yes. Cone wrenches. Wrenches that fit the cones. (Locknut is also 17mm, if I remember correctly.)
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Old 01-14-08, 07:16 PM   #18
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Buy Park. You'll only cry once.
Yeah, you'll cry that one time before you realize you should've gotten hozan, var or pedros instead.
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Old 01-15-08, 07:56 PM   #19
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Yes. Cone wrenches. Wrenches that fit the cones. (Locknut is also 17mm, if I remember correctly.)
This is really a first for me. I have a set of WH-R560 Shimano wheels. The rear hub takes a regular 15 mm cone wrench for the cone and the locknut can use a regular 17 mm open end. All very ordinary.

However, the front wheel requires a 17 mm cone wrench for the cone and the locknut is also 17 mm and thin so a cone wrench would also be correct but it is accessable to an openend also.

So this is the first hub I've ever seen that needed a 17 mm cone wrench and the first wheels that used a larger cone in front than in back.
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