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Old 09-06-2013, 03:49 PM   #1
Track_Graphics
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Adjusting Wheel Bearings

HOLY !!!! they got so hot they started to lock up and I almost did an endo in the parking lot!!!

A few days ago - - - - - in a Galaxy far far away.
I had to remove the front wheel, axle and all. (needed to do some rotor work)
I put it back together and it seemed GR8 !!! Turned real nice.

But yesterday, just before I got to work it seemed real sluggish so I turned into our parking lot and when I pulled in the clutch - HOLY 773H !!!! AALLLLLmost went over the handlebars. Must have looked funny as , but there were cruiser riders watching. (I already know what was going through there very small minds)

So - I believe that when I put it back together I got it too tight and the bearings got hot and ran the lube out like I did with the ole lady the other night and the bike made this horrible squeeeeeeealing sound - just like her :-).

So - I've done lots of car bearings before, but how tight do you set up a bike? How do you know?

I don't think I ruined anything, because after work when it cooled down it seem to roll real smooth in the lot, but after a while it started to get sluggish again. Same thing and the next stop light. It was real tight like I was riding the brake at 85% and it squealed like a - - well, something that really squeals loud....!!!

Any words of direction from some of you badass streetbike guys that think you know everything about bikes?

08 CBR -except for the exhaust pipe, the rest is stock. No special pads, bearings or anything like that.
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Old 09-06-2013, 03:55 PM   #2
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you sure the brakes arent dragging? they run sealed brearings.
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Old 09-06-2013, 04:00 PM   #3
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Old 09-06-2013, 04:02 PM   #4
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First, did you press them in evenly? Second, are the inner races touching the spacer? The inner races should just barely touch the spacer (the spacer should have a LITTLE movement). If they're pressed too tight, the inner race will offset to the outside, causing a ton of friction. If they're not pressed tight enough, the same will happen in the opposite direction when you tighten the axle.
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Old 09-06-2013, 04:03 PM   #5
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Oh...and if your bearings got hot enough to seize, you might wanna replace them. No telling how much damage occurred.
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Old 09-06-2013, 04:04 PM   #6
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Take the calipers off and spin the wheel to check if its still sluggish. Could be warped rotors? And just go ahead and replace the bearings there only like $20 or so and its very simple to do. You just need a hammer flat head and socket the size of the bearing. Check how much you were supposed to torque it as well.
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Old 09-06-2013, 04:29 PM   #7
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Yeah, when it cools down it rotates very smooth and free. When I hit the front brake it works good and releases fine.

I bumped the calipers with the back of my fingers to see if they were HOT but they were barely warm. Same with the rotors. I didn't take out the bearings. I only removed the rotors. Then re-assembled everything again.

But I do agree that if they get too hot you can get spalling - however, I've also seen race car run with red hot rotors and spindles coming into turn 1 on the half mile. I never see them doing anything to them in the pits afterwards. I know it depends on the configuration yer running, i.e. bearing material, lube viscosity and thermal properties, etc etc -

But I really don't wanna go over the bars on the freeway.
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Old 09-06-2013, 04:43 PM   #8
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I didn't take out the bearings. I only removed the rotors. Then re-assembled everything again.
You may have just had your axle too tight. It shouldn't take a ton of torque, especially with the pinch bolts holding it in place.
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