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.


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".


Discuss this topic in the Chain Forums

11/18 Shimano Deore rear hub and Shimano CS-HG20-7 Sprocket

Hi Everyone!

I hope you can help me. I bought a new 26" MTB rear wheel online and it has a Shimano Deore hub, I was trying to attach a new CS-HG20-7 Shimano Hyperglide Sprocket (with 7 gears and 12-28 teeth), but it seems the "Sprocket socket" (I am not sure what it is called) is slightly longer then needed, I could theoretically fit another gear cog.

Are there some kind of "spacers or washers" available? If yes, what are these things called?
Or did I mess something up? Is this normal?

I am new to bike repairs,...

11/07 Cassette out of Order

This might be a dumb question/problem...
Today I took my cassette off and I forgot to keep it in order so now the spacers and cogs are all out of order.
Does anyone know how to reorder the spacers (some are different thicknesses) and gears correctly?
It is a SRAM Red cassette....

09/18 Ultegra 6800 cassette

Does anyone know if Ultegra 6800 cassette will work on Dura Ace 9000 group? If not do you know if Shimano has fixed the issues they had with the 9000 cassettes?

Thanks...

09/14 Chain rides up on sprocket teeth

I removed and replaced the cassette on my bike (making no changes).  Now I find that when the wheel is under load the chain climbs up on the teeth of the smallest sprocket (see photo).[Image: dpy7uc.jpg]
Everything works fine with the other gears or when the wheel spins freely.  This seems to be the *opposite* effect I'd expect if the chain had stretched or the gear teeth were worn.  Instead, the pitch of the chain seems too short, not too long.  Can anyone explain what's happening and how I can fix it?... Read more >>

09/13 Chain wheel broke somehow off

Hi all. i am new here and generally also pretty new to doing anything with my bicycle myself.

I was driving my bicycle today and suddenly noticed that the rear chain ring got completely detached
from the hub and was just free rotating. I never before had a closer look at how it looks like, so I have no idea, what exactly got broken. Now it looks like that:

[img][Imag...					<a href=

08/11 Does anyone know which Tool?

Hi All

Does anyone know the correct tool for this freewheel removal. The Park FR2 is too small.
The freewheel comes from a 1980s Raleigh Record. I've tried two local bike shops with no joy.

It has a Maillard stamp.

Thanks and Regards

[Image: HVfglP.jpg]...

07/27 Getting to the freewheel bearings?

How do I get from this
[Image: DSC05597.jpg]
[Image: freewheel_hub.jpg]


[Image: 275653337.jpg]

The first picture is the model I have sachs LY 94. 8 speed 12-21.  I have the freewheel and cassette off the wheel like in the ... Read more >>

07/19 Chain is loose when not pedaling

Hi, this is my first post to the forum! I have an old Focus MTB, bought it just recently second hand and I am also new to biking so please excuse me for being naive.
The problem started after the first miles with the bicycle, hearing a noise from the back. It was getting louder and louder very quickly and now, when I am pedaling everything is normal but when I stop and keep the pedals still, while on the road, the chain turns really loose and even goes out of the ring. This happens all the time. Tried with some lube and also tried to see if there is an obvious problem with the chain b... Read more >>

07/15 DIY Freewheel Remover for SOLEUS

Removing SOLEUS freewheel DIY without a remover, garage style tip for everyone...

[Image: image1.JPG?dl=0]

I was trying to clean and grease my wheel bearings, looks like removing the free wheel is a must do type of thing on my bike. I found that a regular old school Chevy GM craiger style lug nut fit in there perfectly. I think its ... Read more >>

07/14 FSA Tempo, 34/50

I have. 2015 Defy 5. It has a FSA Tempo, 34/50 crankset.
Is this compatible with the Shimano 5800 group set? I currently have this setup with my Defy 5. She shifts a little rough on the front dérailleur. I guess what I am wondering is if I need to upgrade the crankset to the 5800? The bike came with a Claris setup. What I do not know is if there is an issue with 'spacing'. My current setup has 5800 shifters, FD, RD, chain and cassette (16 tooth removed and no indexing issues).... Read more >>

07/14 Replacement for RM40-7 hub and cassette

I'm new to bike repair. I use an old bike to ride around my neighborhood with my kids so I'm not a serious rider. My bike has a Shimano FH-RM40 7-speed hub and cassette. It's been difficult finding direct replacements for those components. Is there anything else that will fit without having to change out the entire wheel? I don't mind upgrading if the cost isn't too high. What are my options?

Thanks......

06/25 SunRun vs Shimano vs Epoch Freewheels

I need some advice. I bought a used, "as-is", 2015 Fuji Nevada 1.9 Mountain Bike with 3 x 7 gears from a LBS. I ride it a lot, 10-20 miles 3-7 times a week. The spin-on freewheel was a factory issued SunRun 14-34 and it literally fell apart in 2 months. (Yes, SunRun, not Sunrace) I purchased and replaced the old SunRun with a new SunRun 14-34 and after 3 weeks it is wobbling. I had another LBS check it out, they are scratching their heads. I am wanting a better quality freewheel than the Fuji factory issue of the P.O.S. SunRun Brand. The Shimano Tourney 14-34 makes sense but is there a better ... Read more >>

06/23 chain one link too short

The chain on my exercise bike became too long over time and started "slipping".  So I took the chain off and took off one section (2 links - a female and male) and replaced the pin to complete the repair.  Now the chain is too short to put back on the bike - what I needed was a way to make it one link shorter (not one section=2 links).  Is there now a way to make the chain just one link longer?  Some sort of male to female single extension link? Thanks.... Read more >>

04/26 Rattle help!

Complete carbon fiber (frame) road bike less than one year old - 105  10 speed.  Built it myself and it has been fantastic up to now.  About a month ago I started getting a loud rattling noise everytime a rode over slightly rough ground (chip and seal). on smooth road it is silent.  It is obviously coming from the rear part of the drive.  I always ride on the big ring on the 4th cog from the top - flatland.  Here's what I have checked :  Chain is a good length but I have tried two links shorter and two links longer.  Tried a brand new chain. checked that all bolts are tight, pulleys, ... Read more >>

04/07 How do I open this cassette?

I have a new project on my hands and am trying to service a cassette of a bike I recently purchase second-hand. The bike I have is a MTB- Shockwave XT950. Can you please let me know how to open this cassette. I have tried various videos however I am unable to find a video for a similar cassette.

Hx...

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