Shimano has announced the recall of over 2.8 million chainsets globally. The reason behind this recall is because there is a defect which can cause the bonded parts of the crank arms to separate and cause a catastrophic failure. In this video, Sam Gupta explains how to check your crank arms for potential signs of damage.
This is not an alternative course of action to the recall, if you have an affected crank, then take it to your local Shimano dealer. However, it's important to keep an eye on your chainset if it is affected incase a problem develops later down the line. If you are ever concerned, then take your bike to your local Shimano dealer.
This is not an alternative course of action to the recall, if you have an affected crank, then take it to your local Shimano dealer. However, it's important to keep an eye on your chainset if it is affected incase a problem develops later down the line. If you are ever concerned, then take your bike to your local Shimano dealer.
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00:00 Shimano recently recalled over 2.8 million chainsets. In North America, there
00:05 is a stop right notice in place. In other parts of the world, it's just a recall
00:10 for inspection. The advice I'm going to give you today is by no means an
00:14 alternative course of action to the recall itself. If you have an affected
00:19 crank, you should absolutely get this seen to by your local Shimano dealer,
00:23 who will conduct a far more thorough investigation. However, since the advice
00:28 in the rest of the world is that you can keep riding these cranks if deemed to be
00:32 safe by your local Shimano dealer, I believe that we should all be armed with
00:36 a little bit more knowledge on what to look out for. Because the cranks that did
00:40 fail, didn't fail on the first ride. So, playing closer attention to them for the
00:45 rest of your ownership will be very smart to do. Do bear in mind that some
00:50 defects may develop which my method of checking may not spot. Of course, if
00:54 you're unsure, then get them seen to by your local Shimano dealer. The first
01:01 thing to do is check the code on your crank to see if it matches up to those
01:05 that have been recalled. Remember, it's only the Ultegra 6800 and 8000 and
01:11 Dura-Ace 9000 and 9100 series that have been recalled so far. And on screen, you
01:17 can see all of the affected codes. You can find the code right here on the
01:22 inside of both crank arms. It's worth checking both arms just in case they
01:27 have different codes on them. Like I said at the start, if your chainset is subject
01:31 to the recall, for those in North America, do not ride your cranks as the recall
01:36 does go along with a stop ride notice. If you're in the rest of the world, then
01:41 ride with caution. This is the information provided by Shimano, so
01:45 whether you think it makes any sense is up to you, but that is what it is. Next,
01:51 clean your cranks. Carefully remove the chain, spritz over with your cleaning
01:56 fluid of choice so that you can get a really good look at your cranks, and this
02:00 will also help you feel for any imperfections. Once clean, first check the
02:05 right hand crank arm around the bolt circle, specifically these joints here.
02:10 You want to be looking for any issues such as any cracking or steps, or better
02:15 put, any sign that may indicate that the crank arms and chain rings are coming
02:19 apart. From there, look further down the right hand crank arm, especially along
02:25 this ridge on the inside of the arm. Feel the arms to see if you can spot any
02:29 signs of cracking or splitting. Be careful, as if there is a crack or any
02:34 splitting, the metal could be sharp, so be wary of not causing yourself any harm.
02:39 Next, move over to the left hand crank arm. Again, look along the inside edge for
02:45 the exact same signs of damage. A key area to inspect on the non-drive side is
02:50 at the top of the arms, where the crank bolts onto the spindle. Inspect the areas
02:55 around the bolt holes on both sides, and also on this inside edge. After that, look
03:02 over the entirety of the chain set for any other signs of damage, corrosion,
03:06 splitting, steps, or cracking. Bike shops who are conducting inspections will have
03:13 a more rigorous inspection process, as they're going to be removing the entire
03:17 chain set, and then removing the chain rings themselves, to get a good look at
03:21 every angle of the cranks. As I said at the start, if you have an affected chain
03:26 set, then take it to your local Shimano dealer. But, if you are to continue to
03:31 ride your cranks, then just keep a really good eye on them.
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