Help with removal of pins rear 7700 derailler

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edseb
Posts: 3
Joined: Sat Mar 31, 2012 11:21 pm

by edseb

Hi everyone. I've seen some mods done to the Shimano 7700 and 7800 rear deraillier, and one of the steps is to disassemble the entire piece. I got most done, but the hinge pins that are captured are a bit tricky and all the mods no one explains how to do this. The first photo is mine and the other is a mod posted online.
Attachments
pin in.jpg
pins.jpg

by Weenie


edseb
Posts: 3
Joined: Sat Mar 31, 2012 11:21 pm

by edseb

No mechanics here? ha ha, :noidea:

rruff
Shop Owner
Posts: 2194
Joined: Sun Jan 08, 2006 9:12 am
Location: Alto, NM

by rruff

My guess would be that you hammer them out with an appropriate sized punch. But I'd wait for advice from someone who has done it...

I recall seeing a tuned one where the pins had circlips on the ends.

fallen86
Posts: 45
Joined: Thu Aug 18, 2011 11:12 am

by fallen86

I never understand how people are able to cleanly remove these one way pins. more annoyingly, they never tell how they did it! My only guess (and i thought about doing this) is to drill a small hole on the opposite side to enable a small punch to go in and knock it out. I took the pins off of my Sram force Rd but the difference is those pins had (hats?) or ends to them that can be pried out with a wedge tool.

edseb
Posts: 3
Joined: Sat Mar 31, 2012 11:21 pm

by edseb

Yeah, I racking my brain trying to figure it out. May just drill out the other side and c-clip it in in the future or something. No one shows how. :roll:

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veganeric
Posts: 151
Joined: Sat Dec 11, 2010 2:25 am
Location: MN

by veganeric

Perhaps you could drill and tap a hole in the end of the pin. Then use a screw and some washers to extract them. :noidea:

Stockie
Posts: 350
Joined: Mon Aug 20, 2007 7:24 pm

by Stockie

fallen86 wrote:I never understand how people are able to cleanly remove these one way pins. more annoyingly, they never tell how they did it! My only guess (and i thought about doing this) is to drill a small hole on the opposite side to enable a small punch to go in and knock it out. I took the pins off of my Sram force Rd but the difference is those pins had (hats?) or ends to them that can be pried out with a wedge tool.


I'm also looking to remove the pins of my Force RD. Could you give some more information how you got them out?
I Will make the leap

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SWijland
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Joined: Tue Aug 08, 2006 1:41 pm
Location: The Netherlands
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by SWijland

Same question here. Help us out. PLEASE

by Weenie


Stockie
Posts: 350
Joined: Mon Aug 20, 2007 7:24 pm

by Stockie

I got mine out of the force derailleur.
The ones that link the plastic P-knuckle to the magnesium link of the parallelogram can be pulled out quite easily: just pry a little screwdriver onder it. It will damage the aluminium and magnesium a bit, but you can sand it down afterwards.
The 2 other pins are soldered, so they can't be pulled out. But if you drill in the whole where they are soldered, you can pull them out fairly easily. I will post a picture of this later.
I Will make the leap

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