Axle not flush - Brake drag - 600RR.net
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post #1 of 12 (permalink) Old 06-19-2019, 01:44 PM Thread Starter
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Axle not flush - Brake drag

Fixing a 2011 that seems to have hit a curb or big pothole hard: good size dent in the front rim and buckled the right shock.

Replaced: lower triple, top triple, both shocks, front rim, both rotors and the axle. I think the rotors and left shock were fine but it's hard to tell so just replaced them.

After putting it all back together I get some brake drag (wheel spins about one full turn given average force). This bike only has 2500 miles on it and the pads are like new.

It rides fine and even after several hours the rotor is not hot. But what is causing this is driving me crazy.

First two pics below show flush axle the way it is on my 'perfect' bike. And the amount of space between the fork and the rim.

Second two show how it looks on this bike. Not flush and less space.

Any ideas? All the replacement parts except the rim were purchased used.







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post #2 of 12 (permalink) Old 06-19-2019, 02:18 PM
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I've had brake drag since I've owned my CBR600 from 25k mile to 40k miles. I replaced the caliper piston seals for the front wheel no change at all. New rotors bought and also have two wo front wheels, one with a street tire and other other with a track focus tire. Each wheel is the same so I'm come to live with the drag.

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post #3 of 12 (permalink) Old 06-19-2019, 02:33 PM
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Did you use the 0.7mm feeler gauge in the tool kit when you did the install?

Last edited by J.Bell; 06-19-2019 at 10:11 PM.
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post #4 of 12 (permalink) Old 06-19-2019, 02:51 PM Thread Starter
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Quote:
Originally Posted by J.Bell View Post
Did you use the 7mm feeler gauge in the tool kit when you did the install?
I have no idea what that is or what I'd use it for.
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post #5 of 12 (permalink) Old 06-19-2019, 06:07 PM
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Do you have a repair manual?
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post #6 of 12 (permalink) Old 06-19-2019, 08:39 PM
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get manual and follow proper tightening sequence.

it looks like you had pinch bolt tightened before mounting axle retaining nut?
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post #7 of 12 (permalink) Old 06-19-2019, 10:22 PM
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Yeah Tary is right, it's best to follow the proper tightening sequence to get everything aligned properly. The 0.7mm feeler gauge is used to check the left brake caliper spacing.
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post #8 of 12 (permalink) Old 06-20-2019, 01:43 AM
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Points for recognizing a problem!

IMHO, get manual, follow the manual procedure.

There's specific order of bolt torques and procedures to get front axle seated correctly,you need a torque wrench and proper sockets to do so.
(I use the t-wrench every time front tire is changed, along with a general t-check of the triple tree etc.)

Search OTF for "front axle bolt tightening sequence" and such......this work is safety critical, your life is in your hands when doing this work.

Safety critical.
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post #9 of 12 (permalink) Old 06-20-2019, 07:36 AM
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there is a trick to reinstalling the front axle and re-centering it. I don't know if that would be the issue here, but I've always followed this method to get everything perfectly centered....


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post #10 of 12 (permalink) Old 06-20-2019, 08:58 AM Thread Starter
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Thanks for the feedback. Yes, I have the manual, I've done a lot of wheels/tires.

Nice video, but he doesn't follow the manual procedure, which has you putting the calipers on before tightening the left pinch bolts.

Took everything apart again this morning.

The axle seats all the way when the wheel is not on.

The axle widens at one point where it stops against the wheel spacer on the left side.

I made sure the bearings are fully seated since this would cause this issue if they were not. But it seems my axle can't travel the last mm or two to seat fully.

It's an aftermarket rim so perhaps it isn't up to Honda spec.

I put it all back together and there is a little improvement. It spins with just minor pad noise on that side. Nearly two full spins given average force.

Next time I have a Honda rim handy I'm going to fit that and see if it cures the issue.
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post #11 of 12 (permalink) Old 06-20-2019, 12:15 PM
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OK, aftermarket rim?

If it's the rim, try reversing it and fitting it again for confirmation?

At least then you know it's aftermarket part prob?

HTH!
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post #12 of 12 (permalink) Old 06-20-2019, 12:35 PM Thread Starter
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Quote:
Originally Posted by tary preisser View Post
OK, aftermarket rim?

If it's the rim, try reversing it and fitting it again for confirmation?

At least then you know it's aftermarket part prob?

HTH!
The rims aren't symmetrical so not sure I would learn anything by putting it on backwards.

I'm thinking if the the space between the spacers (the hub?) is slightly larger on this rim it wouldn't matter which way it was facing.

Hmmm, but I have the old wheel and a caliper so will measure.
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