I haven't tried WD-40, but will give it a shot. I spent a long time figuring out that it was the upper pulley. Drivetrain noises are sneaky, but I was able to reproduce the noise when I spun the upper pulley by hand. Or rather, moved it. It didn't spin freely.
Thanks for the input, all. Erik On Sunday, August 30, 2020 at 12:21:42 PM UTC-7 George Schick wrote: > As a footnote to this thread, I've noticed that the original lubricant - > usually some kind of grease - that the manf. uses for these items tends to > harden after so many years. I had a problem like this with some rapid-fire > MTB thumb shifters, too. Took 'em apart, hosed 'em out with PB Blaster, > blew out the remains with compressed air, and replenished with Tri-Flow. > The started working perfectly again. Also, this appears to be a common > problem across the product lines with Shimano in particular. > > > On Sunday, August 30, 2020 at 2:00:41 PM UTC-5, George Schick wrote: >> >> PB Blaster works well for that, too. I had a derailleur with some of >> those pulleys that stiffened up like that and shot some of into 'em. Then >> I blew out the excess with compressed air and replaced it wth Tri-Flow >> lubricant. They almost spin by themselves now. >> >> >> On Sunday, August 30, 2020 at 11:48:34 AM UTC-5, Garth wrote: >>> >>> >>> >>> I have a M739 that has those "sealed" pulleys that squeaked. They >>> pulleys were quite stiff to turn by hand. I had never done any So I decided >>> to "play nice" and take one apart, clean thoroughly and relube with some >>> Phil oil. I put it back on the bike and it was still stiff. Well sheesh. So >>> the other one I decided to just squirt some WD-40 and both sides and work >>> it in, so to speak. That one started spinning freely quite quickly, so I >>> sprayed the other one too and it was now spinning freely. Three cheers for >>> squirting WD-40 directly in the pulleys.... zero cheers for taking them >>> apart and trying to be all "proper" about it. >>> >>> So try squirting some WD-40 on both inner sides and spin 'em around. >>> >>> >>> On Saturday, August 29, 2020 at 12:55:28 PM UTC-4, Litho wrote: >>>> >>>> Quick question for everyone. I have a nice XT derailer that I'm >>>> swapping over to one of my bikes, but am having a problem with squeaking >>>> coming from the upper pulley. I love the derailer, but actually removed >>>> it >>>> from another bike because the squeaking was driving me nuts. I tried >>>> everything I could think of but it always came back. My efforts included: >>>> >>>> - Removing the pulley and cleaning it thoroughly. >>>> - Lubing it with oil. >>>> - Lubing it with grease >>>> - Removing all lube and running it dry. >>>> - Taking it apart again. >>>> - Trying each of the above several more time. >>>> >>>> I haven't replaced any of the parts yet. It's a ceramic bushing in the >>>> pulley, not bearings. Any suggestions? Any recommendations on better >>>> pulleys I could swap in? >>>> >>>> Erik >>>> >>> -- 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 on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/3f8a34fd-5de7-4673-a427-c29d318345a2n%40googlegroups.com.
