Mountain Biking - Chain Broke!

This morning my chain broke so I went to the LBS and bought a link and a chain tool.

I replaced the link however the pins seem to stick out a bit far. I centered them and they still stick out enough so that they make a noise when running through my rear D.R.

Do I need to grind these down flush or did the LBS give me the wrong size pins?

If I have to grind them down is a file good enough or do I need a disc grinder? Is it common having these pins stick out?

Any help is appreciated.

Thanks.

It sounds like your new links of chain are not the right kind. Any chance you could post a picture so we can see what you've got?

I got them from the LBS. I took the chain in and he sized them for me.

I read that Shimano replacement links come longer purposely to facilitate ease of installation and that all you had to do was cut the extra off with pliers.

I dont know what kind of pliers you need but any ones i have here wont even nick it!!

It does indeed sound like you got the wrong links... at least the wrong pins although I'm not sure pins come in different sizes. I've never heard of cutting links with pliers. Could you have accidently been sold an 8sp link for your 9sp chain? 9sp chains are thinner.

I have an 8 speed chain if that makes a difference.

Ok, if the LBS saw the chain, particularly 8sp, then the links are most likely the right width. Since you say it makes a noise going through your rear derailleur, I'm guessing you didn't quite finish your installation properly.

When you press the chain rivet back in with your chain tool, it squashes the two outer chain plates together and they hug the inner plates. This does two things: it makes the chain have a stiff link (causing the "ca-chunk" noise you're hearing), and it moves the outer plates further in on the rivet than necessary, making the rivet appear to stick out.

To correct this, better-quality chain tools have a second "shelf" that's intended to spread the outer plates back to their proper positions on the pin. Here's Park Tool's how-to: http://www.parktool.com/repair_help/FAQtchan.shtml

Hope that helps :)

Hey MechBgone, thanks alot!!

Thats exactly what it was!! Chain is perfect not!!