Can't remove rear derailleur

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zhang
Posts: 208
Joined: Mon Aug 06, 2012 20:14 pm

Can't remove rear derailleur

Postby zhang » Thu Dec 06, 2012 20:39 pm

I'm trying to get my rear derailleur (shimano 2200) off to service/replace it. The top pivot (I think they call it the B-pivot?) is seized and won't more freely, which is giving me problems. The problem is, when I use the allen key to loosen the derailleur mounting bolt it moves about 1/3 turn and then won't budget. I'm concerned that if I put any more pressure on it the derailleur hanger will bend!

Any ideas guys?

zhang
Posts: 208
Joined: Mon Aug 06, 2012 20:14 pm

Re: Can't remove rear derailleur

Postby zhang » Thu Dec 06, 2012 22:03 pm


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supersonic
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Joined: Fri Nov 25, 2005 11:50 am

Re: Can't remove rear derailleur

Postby supersonic » Thu Dec 06, 2012 23:41 pm

They can take a fair bit of effort to shift - I have used allen keys three times that length and swung on them!

Try freeing the whole thing up with penetrating oil.

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jonomc4
Posts: 848
Joined: Wed Feb 29, 2012 15:51 pm

Re: Can't remove rear derailleur

Postby jonomc4 » Fri Dec 07, 2012 01:33 am

and add a little grease to the screw when you put them back on :)

DesWeller
Posts: 5233
Joined: Mon May 05, 2008 15:36 pm

Re: Can't remove rear derailleur

Postby DesWeller » Fri Dec 07, 2012 18:09 pm

Removal will be a lot more controllable if you take the chain and the cable off.


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