51. How to Install a Shimano HG or IG Chain

Removal and installation of a Shimano HG or IG chain pin.

IMPORTANT: Nuts and bolts on your bike should always be tightened to the manufacturer's specifications.
How to Install a Shimano HG or IG Chain

In this tutorial, we will learn how to remove and install a connecting pin on a Shimano HG or IG chain. These type of chains always require a special replacement pin that has larger peens.

Tools

For this job you will need a Shimano compatible chain tool such as the Park CT-3, and a set of pliers for breaking the connecting pin after installation. You will also need a black Shimano replacement connecting pin for 6, 7 or 8 speed chains, or a silver pin for 9 speed super narrow chains.

Chain Pin Removal

The first step is to break your chain using a chain tool. If you have previously used a replacement connecting pin, do not disconnect on that pin. The replacement pins can only be used once. Break the chain on any previously unused pin. When you push the pin out, it may be difficult as it will widen the plate holes on its way through. The replacement pins have wider peens to make up the difference. Once removed, discard the old pin.
 

Chain Pin Installation

When installing a chain, always place the chain in the chain tool grooves furthest from the handle. See the tutorial titled "How to use a chain tool" for more detailed instructions.
 
Push the replacement pin in with the narrowed end first, then tighten until the narrow end is fully exposed on the other side. The wide end should protrude equally on both sides of the chain.

Now using your pliers, break off the narrow end of the pin. If the link feels stiff, place the chain on the inner grooves of the chain tool closest to the handle, and tighten it just a bit until the link rotates smoothly. For more tips on loosening stiff links, see our tutorial titled "How to loosen a stiff chain link".

Tags

Discuss this topic in the Chain Forums

09/04 Matching New Chainring to Freewheel

The chain is slipping on my MTB when I'm on the middle chainring and smallest sprocket on the back, but only when I put a lot of force on the pedals.  I replaced the chain last year along with the 7 speed freewheel and the middle 32T chainring. I've probably cycled only 1000 to 1500 miles since and tried to only oil the chain when it was clean, so I'm not sure whether it is excessively worn (have to check).
Should I just replace the chain? The smallest sprocket at the back doesn't look worn (no shark/hooked  teeth), so I don't think the chain is slipping on that, rather the chainring. ... Read more >>

08/23 26" Mongoose Excursion

Hi, All!

I recently got a broken bike from one of my friends, and want to fix it as a fun project.
Seemingly its chain is off from the rail and completely distorted like a helix, so it needs to be replaced. Also, rear derailleur is shattered into two parts, each has a gear, not sure if it can be repaired as I'm a total newbie, so I decided to buy a new part for it as well.

However, I don't know which parts should I buy. I checked official documents for maintenance but it doesn't describe the specifications of parts. Does anybody have ideas which parts to buy? I'... Read more >>

06/25 Chain getting sucked in by fat tire

Hi, my chain on a 2016 Specialized fatboy keeps getting sucked into the tire and comes off when I am in the top gear coasting. I have had multiple bike shops look at it and they say that those bike are not made to be in the top gear which sound ridiculous to me. It also been suggested that I change the front sprocket from a 28 to a 32. Also the chain measured fine. Any suggestions?... Read more >>

05/04 42 chainring

I fitted a black 105 5800 compact chainring set (50/33) when I built my new bike. I prefer the 50 chainring cos, on our flat terrain, I can push it, but I can't push a 52 0r 53.  However, I would like to change the 33 inner ring for a 42.  I have found some rings with the same PCD, but they all seem to have some qualifications which I don't entirely follow.  Is there a straight forward way to do what I want?... Read more >>

02/24 Chain issue

Hi,

I have the following issue on my bike (see video):

https://youtu.be/XtuR7BI_7SU

When stopped at traffic lights I need various attempts at putting the pedal at the correct hight to set off. Is this to do with play in bottom bracket or another issue?

I have this play in bottom bracket:
https://youtu.be/ikX9hNyDs6g

It's an old bike so do not want to spend much money on it. I can live with the play in the bott... Read more >>

11/07 Chain dropping?

I'm having an issue on my CX bike. Which is shimano with 38/48. On the last 2 rides when I'm in the lowest gear on the cassette my chain drops off the small chain ring. It doesn't happen on the 2nd from lowest gear on the cassette.

I decided that maybe my rear mech was limited enough so perhaps was pulling the chain off at an angle. Therefore I played with the Lo limiter screw and indexing adjustment to ensure that wasn't the case. On on my bike stand it was fine but once riding the bike again it dropped? Given that it has only just started happening could be be wear relat... Read more >>

09/11 Stay spacing for 6-speed freewheel

I have an older frame with an ultra-6 freewheel.  When the rear wheel is removed the stays measure 122.78 (hub is a 120 for the ultra-6).  I can cold bend it out to 126, I'm sure, but do I need to if I just put a regular 6-speed freewheel on?  I'm not sure how tight that would be as far as the chain scraping the frame.  has anybody tried it?  Has anybody bent a 120 out to 126 or 130 without problems?... Read more >>

09/10 Chain wear indicators

I recently picked up a Park CC-3.2 to put in my portable bike tool-bag (12 inch ruler won't fit).  With it one of my chains that measures fine with the ruler, fails, even at the .75 side.  Reading on the subject states that the CC-3.2 doesn't take into account roller wear, which the Shimano TL-CN41 does. So, I took a popsicle stick (perfect thickness) and shaped it to press the roller nearest the drop-in end of the Park to give similar results to the Shimano and eliminate roller wear anomalies.  Sure enough, measurements come out differently, and what "failed" previously with the Park, now ... Read more >>

09/03 Changing cassette fail

Hi all. 1st time post. I am unablr to remove the cassette from my rear tyre. I followed the easy tutorial on bikeradar but havent managed to get any success.

See link to pics of my cassette and the lockring i bought. http://s1067.photobucket.com/user/Nexus62/library/Mobile%20Uploads

I think i know where i went wrong. The lockring i purchased didnt fit properly, so i just used a spanner to remove the bolt. Now all that is left on the wheel is the old cassette..

... Read more >>

07/26 Chain slipping off gear shifter(?)

i've recently started riding my bike for exercise. was going well for a couple weeks, but a few days ago the chain on my bike has been slipping off of what i think is the gear shifter. it is very annoying and i haven't been able to ride my bike because of it.

Edit More info: i have a Schwinn Ranger 10 speed. the gear only slips like that in high gear. it does not slip while in low gear.


i have a video of basically what happens. can't get a video of it while riding. it is a video of it slipping off stationary.



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