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Old 10-12-2020, 05:07 PM   #1
Cello
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Brake Issue

I just rolled my bike out of the garage to wash it after a few weeks of being away, and I noticed that the brake pads were lightly brushing the rotors as I pushed. Is it possible that something weakened or wore out? All I can think of is a spring that pushes the caliper away, or is there something else that may cause an issue like that?

I havenít done any work on the brakes or at all, really. Itís a ninja 400, if anyone knows any specific issue with those.
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Old 10-13-2020, 07:46 AM   #2
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Stating your year and mileage would be helpful.
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Old 10-13-2020, 07:52 AM   #3
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Quote:
Originally Posted by pbfoot View Post
Stating your year and mileage would be helpful.
Well, it has to be 2018 or newer.

Have you ridden it/used the brakes under load since discovering this? Just to ensure its not something that will clear out/clean out after a brake application? Just curious.
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Old 10-13-2020, 07:54 AM   #4
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Well, it has to be 2018 or newer.

Have you ridden it/used the brakes under load since discovering this? Just to ensure its not something that will clear out/clean out after a brake application? Just curious.
If that's the case, it probably just needs to be ridden. Pretty common for the pads and rotors to oxidize while sitting.
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Old 10-13-2020, 08:03 AM   #5
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If that's the case, it probably just needs to be ridden. Pretty common for the pads and rotors to oxidize while sitting.
That's kinda what I was thinking. That or some crud got lodged in there.
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Old 10-13-2020, 08:22 AM   #6
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Cleaning your brakes is something not many people do or are aware of and could also cause dragging. Basically pull off the calipers and pads, pump out the pistons (not all the way) and clean them with an old toothbrush/soapy water. push back in and reassemble. I do mine about 2x a year.
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Old 10-13-2020, 09:05 AM   #7
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Quote:
Originally Posted by Cello View Post
I just rolled my bike out of the garage to wash it after a few weeks of being away, and I noticed that the brake pads were lightly brushing the rotors as I pushed. Is it possible that something weakened or wore out? All I can think of is a spring that pushes the caliper away, or is there something else that may cause an issue like that?

I havenít done any work on the brakes or at all, really. Itís a ninja 400, if anyone knows any specific issue with those.
Hey! Do you have any photos to post? Another guy posted something about his brakes, directly relating to some Arashi footpegs he installed. Here is the post: https://www.ninja400riders.com/threa...30/#post-89183

The guys made a few suggestions. This could be not related at all, but he posted pics and I'm curious as to how your brakes look.
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Old 10-13-2020, 10:06 AM   #8
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Quote:
Originally Posted by pbfoot View Post
If that's the case, it probably just needs to be ridden. Pretty common for the pads and rotors to oxidize while sitting.
I think this is going to be the issue. Someone on another forum said to do a quick ride, only use the rear brake, and feel the front rotor after a bit. It wasnít hot after a mile, so the pad wasnít really putting pressure on the rotor. I took a bit longer ride after that riding carefully and had no issues with the front end.


I had no idea that brake pads oxidized like that. I just heard the brakes scuffing and thought I was looking at a repair job.
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