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Shimano Dura Ace 7410 Sealed Cartrige Headset Question

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Shimano Dura Ace 7410 Sealed Cartrige Headset Question

Old 12-30-11, 12:57 AM
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Shutter
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Shimano Dura Ace 7410 Sealed Cartrige Headset Question

Hi, I just purchased a Shimano 7410 sealed Cartridge headset on ebay... From what I know, the bearings are sealed... when I took them out of the cups there was oil or grease leaking out of them into the cups because they are greasy / Oily... is this normal? or did the last person try to re-grease them? Also the bearings feel like the MIGHT be a TINY TINY bit gritty... feels like there may be a grain or two of sand in there... I just thought I'd ask here before I contact the seller about this,

thanks!
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Old 12-30-11, 02:01 AM
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Mine were greasy, I wiped them off, added more grease, and installed it. Seems fine.
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Old 12-30-11, 02:25 AM
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you could always buy new cartridge bearings if they are crusty, but they'd have to have some serious mileage on them or have been left out in the elements for a while.
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Old 12-30-11, 05:18 AM
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Wipe them off and squeeze new grease into them.
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Old 12-30-11, 10:32 AM
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I had an Ultergra/600 CBHS that I dissassembled the cartridge and cleaned and repacked and it came out as good as new.
Assuming the cartridges are similar/same.....
Mine was gritty and I wasn't having any luck finding replacements.
Really easy to do.
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Old 12-30-11, 07:03 PM
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Thanks! if I just wide it off and re-grease it would regular Phill Woods grease work fine?

thanks!
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