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Discussion Starter · #1 ·
Hi guys,

All of a sudden after cleaning my rear brake caliper (removed, cleaned pistons) the back wheel makes a really loud clnking (like metal on metal) sound randomly every five seconds or so, I have only noticed it at low speed, under 15mph - maybe Im just not hearing it at speed or its just low speed issue.

I have it on stand and cant see any problems.

Any advice?
 

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Since you just cleaned your brake caliper, I'm going to go out on a limb and guess that it's the brake caliper clanking around :yes

They always do that a bit, but probably you loosened it up a bit more than normal by cleaning off all the grunge that was holding it in place as well. Try going out again and, while going slowly, brake mostly or completely with the rear and see if you hear it then.

Edit: Actually, since you've got it on the stand right now, don't go ride it, just grab onto the rear caliper and yank it around a little - I'm guessing you'll hear the same clanking sound you heard while riding. Let us know what you find out
 
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Have you put the bike on a stand and spun the tire in an attempt to locate the noise? Not recommended, but put it up on the stands and pop it into 1st and see if you can here the noise?
 

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Discussion Starter · #6 ·
Update:

I have just been doing some tests. When I brake hard with the back brake the wheel locks up and then just before it does there is the clank loud as ever.

Like the rear shock is clanking every time it moves down

Stumped
 

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It's not going to fix itself. Did you get the caliper back on the guide on the swingarm properly? And you got all your spacers in properly? And did you get 1 brake pad on each side of the rotor or both pads on the same side? How tight is your chain? Rotate your wheel on the stand and check your chain slack at several spots.
 

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I'm guessing you have the caliper bracket installed incorrectly. This is very easy to get out of whack if you aren't paying attention while fighting to get the rear wheel back on.
 

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Discussion Starter · #10 ·
now that you mention it, I do not remember putting the caliper back on the guide, but surely It wouldnt have let me put it on unless it was on the guide? Will go check...
 

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Discussion Starter · #11 ·
just checked, there are no guides on the swingarm for this caliper. just bolts onto a bracket which itsself is bolted onto the arm.

bolts on with two hex bolts no guides.
 

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Welp, something isn't right. Might be a good idea to go back through everything and double check. I'd be weary about riding it until you get this sorted.
 

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just checked, there are no guides on the swingarm for this caliper. just bolts onto a bracket which itsself is bolted onto the arm.

bolts on with two hex bolts no guides.
I've never seen a motorcycle without a guide. If it doesn't have a guide to hold the caliper in place it's just going to move all over the place when you hit the brake. All ZX6Rs have a guide. As mentioned what year is your bike and maybe you could take some pictures of your caliper position from the side and from the rear so we can see your spacers and pads?
 

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That's what I asked twice already and instead of answering the question he goes out and rides the bike again. :)
Yup, that was my suggestion in the 2nd post already, but...:O

I've never seen a motorcycle without a guide. If it doesn't have a guide to hold the caliper in place it's just going to move all over the place when you hit the brake. All ZX6Rs have a guide. As mentioned what year is your bike and maybe you could take some pictures of your caliper position from the side and from the rear so we can see your spacers and pads?
Yeah, why don't you do that last part so we can help you out
 

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Well then it should definitely have a guide on the inside of the swingarm the caliper slides onto and a hole for the axle shaft to slide through
 

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Like so

 

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I agree bike has to have a guide or what the hell is stabilizing the brake caliper to keep it in place? I've seen everyone tell you about. Ten times but I'll say it again check rear wheel alignment , make sure chain is well clean and well lubed
 
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