Bicycle Mechanics - squeaky rear derailer on gear change.
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09-27-06, 01:13 AM
When changing gears the rear derailer is very squeaky, but it is fine when not changing gears. I lubed the chain and the problem still persists. I squirted a bit of lube into the rear derailer into parts that look like they move on gear changes to no avail. Could someone please tell me what exact part of the rd needs to be looked at to remove this squeaky, as everyone would know squeaking bikes can get rather annoying.
You need to apply some light oil or bike lube as long as it's not wax based crud, to both sides of all the pivots on the derailer Which sounds like you've attempted to do. What kind of oil did you use? A high quality oil like FinishLine Teflon Dry Plus works very well and last long. Also lay the bike on it's side for a while so the oil can actually penetrated downward into the pivots.
09-27-06, 11:03 AM
I solved a squeaky derailleur problem by squirting lube into the pulley bearings. It took me a while to find because I had only noticed the squeak in my lowest gear and during shifts. Sounds similar to your problem. After squirting a lot of wd-40 into the pulley bearings, the liquid returned red (from rust I assume).
09-27-06, 09:33 PM
The upper jockey pulley needs to be greased, not oiled. Remove it, apply a dab of grease on the brass/ceremic bushing, then reinstall.
09-27-06, 09:37 PM
Borderline's suggestion will probably solve your problem, if not remove the pullies ( dont mix them up) remove the center bushing, lube & reassemble. Derailluer squeaks are always the pullies.
10-03-06, 01:59 AM
Thanks for the replies. I have been applying lube to the pivots, only problem is that I only have "wax based crud" which obviously doesn't help at all.
Before i go taking things apart i will try applying some non-wax based lube to the pulley bearings and see how that turns out.
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