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Jockey Pulleys

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schrockbike Offline
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Posts: 1
Joined: Mar 2013
Post: #1
Jockey Pulleys
I foolishly did not remove and clean my jockey pulleys (Acera derailleur) one at a time, and see that one has a metal sleeve inside the ring, and one does not. Both bushings seem to be the same length. The metal-sleeved one is slightly thinner. From my reading, it seems that this one is the "top" one (closest to the freewheel/cassette) that because it is thinner, it "wobbles" to make shifting easier. Do I have it right that I put the thinner one on top?
Mar 28, 2013 02:21 PM
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DaveM Offline
Veteran Member


Posts: 1,374
Joined: Aug 2008
Post: #2
RE: Jockey Pulleys
Yes, the top pulley should be able to move side to side a tiny bit to help the pulley align under the cogs.
Mar 28, 2013 11:52 PM
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bobtravers Offline
Senior Member


Posts: 156
Joined: Oct 2010
Post: #3
RE: Jockey Pulleys
Usually, there's a "Centeron" marking on it...
Mar 29, 2013 07:09 AM
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nfmisso Offline
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San Jose, CA
Posts: 2,314
Joined: Jul 2010
Post: #4
RE: Jockey Pulleys
Have you got the relevant documents from Shimano's TechDocs site?

Nigel
Mar 29, 2013 07:26 AM
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