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Bent chain adjuster plate

13K views 36 replies 17 participants last post by  Jon no h  
#1 · (Edited)
So the story goes...I brought my bike into the shop to get my oil changed and everything checked before my next track date. Some time goes by and the technician comes to me and says the chain is really loose and needs to be tightened. I thought that was weird because they just put on new rotors and pads back in March so it shouldn't be all that loose. I agree to the adjustment and then he comes right back and says I need to check something out. I see this:

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Right side is fine:

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Chain is pretty loose:

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Now for the interesting part. 3 other machanics come over because appreantly this has been a problem before. About a month ago a guy came in with his 2014 GSXR1000. The chain had came off and shit whipped a hole in his block. The manager called up Suzuki and they flew out with the guy that designed the plate piece. They took a bunch of pictures, warranted the replacement work and left. They came to the resolution that the adjuster bolt went through the axle, the chain got too loose and broke off. Manger hinted that a recall might be coming soon.

Here our my stats for my bike:
2013 GSXR1000 - 5,296 miles
BMC Filter
Full 2 Bros Exhaust
Dyno Tuned
Quick Shift
Galfer Rotors
Galfer Pads

Has anybody experienced something like this???
 
#2 ·
Pitbullman here ( GDC) had the same issue. Just tried to get his pic,but couldn't looked just like yours anyhow. You aren't alone!
 
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#3 ·
That is weird, you gonna stick with the stock blocks?
 
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#6 ·
Thanks.

Read through the tread and I have never launched it hard. Even at the track because I'm a launching noob. I'm pretty clueless on what I did to cause this. Me and the dealer agreed that it's a design flaw. The right side seems a lot more stout than the left side for some reason.
 
#8 ·
There is more "force" on that side, possibly a flaw in the material or a softer/lighter metal for reducing weight. Wonder if an older set of blocks would work.
 
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#9 ·
Got word back from Suzuki. They are going to cover the parts and repairs. They said I was the first GSXR1000 to have this problem reported to them. They said this usually occurs on the 750's. They requested the faulty part so they can analyze to metal to see if torque specs need to be changed.

I want also went ahead and brought Yoshimura axle blocks to install mainly because I don't trust the stock part.
 
#11 ·
I just paid a visit to my suzuki dealer here in Australia and the head of the service department noticed that my axle block has partially collapsed on my L3 gsxr1000 left side as well. He suggested I replace the axle block asap as it is collapsing under the torque.

I ordered Yoshimura black axle blocks yesterday, but have to wait 10 business days for them to arrive from overseas.

I have 27,000 klms on my bike in just over a year, same chain ZVMX DID and stealth sprockets -1, +2. I don't think the Yoshi blocks will have any problems.

I'll take some pics tomorrow and post it.

Pete
 
#14 · (Edited)
Something's not right. There's got to be more to this. That adjuster block has been used on 1000s since 2005 and the Hayabusa since 2008. You can see it on Mladin's K9 here. I'm unaware of any issue like that on the earlier bikes. I can see five possibilities:

1. A bad batch of aluminum (soft alloy) got into the manufacturing system by accident.
2. The absence of a cotter pin on the newer models is allowing the nut to back off enough that the axle/block is moving around and smashing into the adjustment bolt.
3. People aren't properly torquing the axle nut.
4. The part of the swingarm where the adjuster block sits has been redesigned or mismachined such that the adjuster block can move around.
5. The location of the adjustment bolt on the swingarm has been moved outward so that the head only sits on part of the adjuster block (unlikely and ought to be visually apparent).

You might consider swapping the axle around so that the nut is on the right side. The adjuster block used on the non-threaded side is beefier and slightly thicker in the area near the bolt.

Was there any evidence of the axle / adjuster blocks sliding back and forth in the swingarm?
 
#15 ·
Had the same problem on my bike earlier and the mechanic filed the bent part flat and fixed it by swapping the axle around.
 
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#16 ·
Yes, this happened to me and I simply replaced the parts with OEM blocks.

I haven't had the issue since.

Our only guess was that the bolt had space/gap between bolt/block that under torque caused it to slam into the soft aluminum.

It also damaged the chain which was apparent with its kinks, etc so I replaced the chain, sprockets, blocks, and bolts.

Since then I have not had the issue.

Here are my pics.



 
#17 ·
Yes, this happened to me and I simply replaced the parts with OEM blocks.

I haven't had the issue since.

Our only guess was that the bolt had space/gap between bolt/block that under torque caused it to slam into the soft aluminum.

It also damaged the chain which was apparent with its kinks, etc so I replaced the chain, sprockets, blocks, and bolts.

Since then I have not had the issue.

Here are my pics.
Thanks for sharing. The dealer went ahead and swapped in the Yoshi blocks and the bike feels solid now. The parts have been sent off to Suzuki for testing and i'll report back on their findings.
 
#25 ·
Another reason I get rid off this shitty adjustment setup & put something half decent on.
Those fancy aftermarket chain adjusters have been known to damage the swingarm itself, if you hit the ground just right. Leverage and all that, y'know. :p
 
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#24 ·
beware i had a set of those brake on a customer bike the bolt snapped... axle then slammed forward and chain jumped braking the case. i had a set on mine i then removed and installed a set of yosh blocks i wont sell them anymore.

jason
 
#26 ·
Cheers for the heads up, have used before on other bikes with no issues & have not heard of any issues before. I will look into making a "fail safe" mod though.
 
#33 ·
Got the letter here in the UK today. Have put my bike away for winter now though.

Would it be possible to just take the blocks to the dealer and swap them for the replacements??
 
#34 ·
I would be very shocked if they would let you do that. I tried here in the US and they definitely would not. They said due to liability and certainly for any future purchaser of the bike, they don't know that you did the swap and therefore couldn't sign off as saying that VIN had been fixed. I can understand their perspective. Took 5 minutes.
 
#35 ·
I had the exact same issue a few months ago. This is my third GSX-R1000 over the years ('03, '07, now '12) and the first one to ever have this issue. I have no idea how it happened, as the bike wasn't abused. Dealer replaced the part under warranty.
 
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