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Old 09-04-11, 07:06 PM   #1
jesselattarulo
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Threadless Headset Assembly Issues.

Hey Guys and Girls,
I've joined today to ask for some help in assembling a threadless aheadset. I've already pressed in the upper and lower head tube races. I have some parts I know how to assemble but some I don't.

This picture shows all the parts I have left over. I do not know what to do with parts 3, 4, 5 and 6. I also don't understand what number 7 is and what way the compression ring goes.
If someone could send me some instructions on how to assemble it that would be just the best ever.

THANKS,
Jesse Lattarulo.
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Old 09-04-11, 08:38 PM   #2
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I'm pretty much guessing here, as I don't have experience with roller bearing headsets.

I would think that 1 fits between 3 and 5 (in the orientation in the picture, 3 then 1 on top then 5 on top of that). Similarly 2 fits between 4 and 6. Presumably, each roller bearing (1 and 2) is generously greased before going into their stacks.

I would think that the wide end of each bearing stack (5) would go closest to the headtube, fitting in the pressed in part, but I don't know what the pressed-in part looks like. The compression ring would then nest on top of part 4, with tapered side down.

Presumably, there's also a fork crown race that you've already installed, and a star fangled nut, bolt and top cap (or equivalent) to apply preload. Not sure about 7, it's hard to see clearly in your photo.

Last edited by Mondoman; 09-04-11 at 08:45 PM.
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Old 09-04-11, 09:11 PM   #3
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I'd probably try the order they show in this picture. (reverse for top, of course.) Looks like that big ring is a seal, perhaps.

Looks like crown race is upside down in pic? 8 should go on top inside either 3 or 4. 3 or 4 might be differently machined to accept 8 or they both might.

Put it together without cranking down on the top cap bolt and you can get a feel for if the fork is going to spin smoothly.


Last edited by LesterOfPuppets; 09-04-11 at 09:16 PM.
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Old 09-04-11, 09:28 PM   #4
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In order, from the bottom,

Crown race (flipped from what's shown in Miche pic)
7 (hopefully 7 is a plastic or rubbery piece) If it's metal, I'd wait for a second opinion.
3 (or 4)
1
5

{ headtube **

6
2
3 (or possibly 4)
8

Try this setup without tightening first to get a feel for whether it's right or not.
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Old 09-04-11, 09:37 PM   #5
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Thanks heaps guys. It seems this is enough information to go with! I think number 7 is the only thing i'm a bit confused about but I think it's for different forks than mine.
Thanks Again.
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Old 09-04-11, 09:41 PM   #6
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Actually I worked out the use of part number 7. You were right LesterOfPuppets.
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