Thank you, Will. Yes, I've been servicing my Chris King hubs since I got them in the early '90s. The same bearings are still rolling like the day I got 'em. I've also regularly serviced my White Ind. bearings in an M15 rear hub. However, I did have to replace them once after about 8 years.
Cheers, John On Wednesday, December 11, 2024 at 11:10:14 AM UTC-8 wboe...@gmail.com wrote: > The only sealed bearings I've used that are meant to be cleaned and > regreased are Chris King. You *can* do it to regular sealed bearings but > I've never had much success. They are meant to be replaced but last for a > very long time. > > Will > > On Wednesday, December 11, 2024 at 12:25:33 PM UTC-5 John Rinker wrote: > >> Thanks, Bill! I always appreciate your thoughts on maintaining a nice >> bicycle. Yes, the headset is smooth and viscous, so there will be no need >> to pry it apart. I was hoping to clean and regrease the bearings as a >> matter of good maintenance, but it seems there's no need. Thanks Shimano! >> >> Cheers, John >> >> On Wednesday, December 11, 2024 at 7:52:29 AM UTC-8 Bill Lindsay wrote: >> >>> Yes and no. It's not meant to happen, but if you determine that it must >>> happen, it can be done. If you insist on prying it apart, and don't have a >>> great approach, and remain determined to do it anyway, it's definitely >>> possible to destroy stuff. >>> >>> to first order, move the bearing in your fingers, one ring rotating >>> against the other. If it feels smooth rather than rough, that's good. If >>> you feel viscosity rather than dryness, that's also good. Don't try to >>> take it apart. If either of those things feels unacceptably bad to you, >>> then maybe you want to take it apart. If you think you want to take it >>> apart because you think it's good preventative maintenance, or you think it >>> must be in need of an overhaul, then don't bother. That's my advice. >>> >>> I took apart a Deore LX model with similar architecture. One of the >>> bearing units was pretty rusty and I did pull it apart, cleaned things out, >>> added new balls, and pressed it back together. That's how I know it is >>> possible. If your bearings are as hosed as mine were, give it a go. If >>> you think they seem fine, they probably are. >>> >>> Bill Lindsay >>> El Cerrito, CA >>> >>> On Tuesday, December 10, 2024 at 4:24:09 PM UTC-8 John Rinker wrote: >>> >>>> Good evening. >>>> >>>> Below is a photo of the headset bearings from the Shimano Ultegra >>>> (HP-6500) from the Toyo Atlantis frame (circa. 2005-ish) I now ride. >>>> >>>> Do you know if these bearings are serviceable? I'm reluctant to pry >>>> anything open if this is not meant to happen. >>>> >>>> Cheers, John >>>> [image: IMG_4322.jpg][image: IMG_4324.jpg] >>>> >>> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/6661e3ba-55c5-4c33-b128-84cca1ac5b7cn%40googlegroups.com.
