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Stupid ques about Dura-Ace chains (9spd)(6 posts)

Stupid ques about Dura-Ace chains (9spd)joe1265
Jan 22, 2004 7:48 PM
I've never owned a DA chain before. Just looking at it, I assume you can't break it with a standard chain tool.

Can some one help out a novice mechanic. How do I take off/put on this chain?

Thanks.
9sp chain toolScollopini
Jan 22, 2004 7:58 PM
OK - don't know what chain tool you have, but a standard 9sp chain tool will work - Park tools make several models - I have a mini chain brute which works - they are cheap to buy.

Shimano make 9sp specific tools - cost a little more.

Break the chain as any other - drive a rivet out (but not a joining rivet which has a different appearance to the others. Then remove any surplus links - assuming original chain was the right length, make new chain the same, and rejoin new chain by driving joining pin in with the chain tool. Break off protruding pin with plyers.

If you require further help - check out the Park Tools website - it has detailed instructions and diagrams/photos to guide you.
9sp chain tooldivve
Jan 22, 2004 9:27 PM
If it's a newer CN-7701 chain you'll need something with more leverage than the mini brute. The pin retaining force is much higher compared to the older DA chain.
Don't assume...russw19
Jan 22, 2004 9:29 PM
It is broken and joined with any normal chain tool, but you need a special pin to join it. When you drive out the pin on any chain, it deforms the plate and makes the hole enlarged. The Shimano pin fits the enlarged hole. You can also rejoin it with a SRAM Powerlink, a Connex link, a KMC missing link, and some (not me) will even tell you to just rejoin it with the old pin. But you don't need a special chain tool to do it.

Russ
Don't assume...Gripfer
Jan 22, 2004 10:07 PM
Isn't it funny how many times you don't really need the special tool or new part? Shimano doesn't ever say it, but there backward and forward compatibility in most of their componets. That usually includes the tools to work on them.
re: Stupid ques about Dura-Ace chains (9spd)Chen2
Jan 23, 2004 6:45 AM
I use a Park chain tool and re-use the same pin, no problem. The only time I remove a chain is to replace it, several thousand miles later.