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Old 06-25-10, 01:07 AM   #1
Kavorka
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Screwed - Removing the head set crown race from fork

Hi,

So i handed over my bike to be powder coated and the guy doing it was supposed to remove all the parts - except he forgot the crown race from the fork

Ive cleared the space between fork and the crown race so there is no color/clearcoat getting in my way. But i still cant get it to even nudge, the thing is stuck

So i was wondering if something bad happened when going into the oven with the grease/oil that was left behind the crown race and the metal
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Old 06-25-10, 06:56 AM   #2
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That is an extremely tight press fit - not likely there was any grease in there or that it would prevent removal. Older bikes usually had part of the race projecting at the front and back of the fork crown and we used a U shaped tool with a dead blow hammer to remove (blades resting on a block of wood with a hole in it). Not all modern forks will allow that, thus the very expensive Park tool used for extracting the race.
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Old 06-25-10, 07:00 AM   #3
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Go to an auto parts store and ask at the parts counter if they have any bearing splitters/separators. If you go to an Autozone, they often will loan tools out for free. The bearing splitter will remove the race without damaging it in a few seconds. Or take it to your LBS who likely has a tool that will work as well.
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Old 06-25-10, 09:20 AM   #4
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i'd leave it up to the LBS on this one, you just got it painted and the shop SHOULD have a park crown race remover. It basically grabs the race from both sides and pushes the steerer down from the top. You might be able to get it off with a punch or a screwdriver, but you risk marring up your new powder coat
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Old 06-25-10, 10:22 AM   #5
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Why can't you just clear the color and clearcoat off the race?
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Old 06-25-10, 11:08 AM   #6
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This is a job for the correct tool. I bought a crown race removal tool off eBay from a guy who makes several different bike tools and it rocks. So does his headrace press. Great stuff.
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Old 06-25-10, 11:28 AM   #7
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the correct tool is:

A head set extractor. You want to remove the top raceway, then insert the handle first from top until it gets the fins past the raceway, from down just hammer on the handle of the tool, supporting the frame.

Or a jaw bearing extractor:

(this 3-jaw extractor can extract internal raceways also by inverting the jaws like it's said in the instructions of this tool) You would just need the correct size to fit all three jaws inside the headset. ( a small extractor of this kind)

Or use a manufactured jaw/washer/nut/something to hold the raceway from behind and hammer it out with a long punch or a slide hammer form top

Last edited by Asi; 06-25-10 at 11:35 AM.
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Old 06-25-10, 11:47 AM   #8
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Quote:
Originally Posted by Asi View Post
the correct tool is:

A head set extractor. You want to remove the top raceway, then insert the handle first from top until it gets the fins past the raceway, from down just hammer on the handle of the tool, supporting the frame.

Or a jaw bearing extractor:

(this 3-jaw extractor can extract internal raceways also by inverting the jaws like it's said in the instructions of this tool) You would just need the correct size to fit all three jaws inside the headset. ( a small extractor of this kind)

Or use a manufactured jaw/washer/nut/something to hold the raceway from behind and hammer it out with a long punch or a slide hammer form top
Neither of these tool would be of any use removing a crown race.
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Old 06-25-10, 11:54 AM   #9
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Right.. I thought about the headset in the frame.

For the raceway on the fork just twist the crown raceway on the steerer tube, by twisting the fork while holding the crown raceway in a vice (If you're not going to use that headset anymore). Or a more desirable solution is a long reach bearing extractor (like the 3jaw extractor, with long jaws)


You should have a notch in the fork to help removing the crown raceway like this:

Last edited by Asi; 06-25-10 at 12:01 PM.
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Old 06-25-10, 11:57 AM   #10
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Quote:
Originally Posted by Asi View Post
Right.. I thought about the headset in the frame.

For the raceway on the fork just twist the crown raceway on the steerer tube, by twisting the fork while holding the crown in a vice. Or a more desirable solution is a long reach bearing extractor (like the 3jaw extractor, with long jaws)
A bearing extractor (or gear puller) won't be able to grab underneath the crown race between it and the fork. If it could, you could use a punch to knock the crown race off. A bearing separator (http://www.harborfreight.com/bearing...set-93980.html) will do the job quickly without damaging anything. So will the Park Tool crown race remover.
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Old 06-26-10, 03:26 PM   #11
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Ok so im not that screwed then thats good news!

Im heading over to my LBS next week and see if I can remove the crown and save the powder coat.
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Old 06-26-10, 03:53 PM   #12
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the correct tool is:
No, that tool is for removing the cups from the head tube. To remove the crown race from the fork you need this tool (Campagnolo #729 or equivalent):
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Old 06-26-10, 07:37 PM   #13
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Originally Posted by rccardr View Post
This is a job for the correct tool. I bought a crown race removal tool off eBay from a guy who makes several different bike tools and it rocks. So does his headrace press. Great stuff.
Me too. I have bought several tools from this guy. He makes good ones, and the prices are reasonable. I just used mine a couple of days ago. Worked like a champ.
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Old 06-26-10, 09:00 PM   #14
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You should have a notch in the fork to help removing the crown raceway like this: <-- not all forks have that, thats the reason the crown race is not 10 flat (it should not be) in the fork.
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Old 06-27-10, 04:52 PM   #15
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If you can hold the fork very securely in a bench vice without scratching it or damaging it, you can ease the crown race up by working it with a thin tool or chisel, carefully tapping it. Repeat: Carefully! Slowly! Do not damage the fork!
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