Shaking while brakeing! - MVAgusta.net
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post #1 of 13 (permalink) Old 06-19-2013, 08:50 AM Thread Starter
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Shaking while brakeing!

I sense a nervous behaviour of the front end while applying the front brake. I have tried to rock the fork legs back and forth but there is no obvious movment. What is most likely?

Is it the rotors/discs that needs to be shimmed or is it the steering bearings that needs to be tightened? Either me or the previous owner have done any wheelis or anything. I don´t feel any pulsation in the brake lever so I am a bit confused. Any pointers?

Cheers!

Magnus

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post #2 of 13 (permalink) Old 06-19-2013, 09:37 AM
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Can you lift the front of the bike clear of the ground and then check those steering bearing again.
With no pulse on the lever this does not sound like warped disc's.

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post #3 of 13 (permalink) Old 06-19-2013, 11:41 PM
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What does the front tyre look like, is it badly warn or under/over pressure ?
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post #4 of 13 (permalink) Old 06-20-2013, 01:28 AM
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Magnus;
my vote;
steering head bearings are loose or the head stock bearing cartridge lock ring isn't torqued correctly

check the service manual for the specs

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post #5 of 13 (permalink) Old 06-20-2013, 02:47 AM Thread Starter
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Quote:
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Magnus;
my vote;
steering head bearings are loose or the head stock bearing cartridge lock ring isn't torqued correctly

check the service manual for the specs
OK so there is movment back and forth when moving the fork legs with the wheel of the ground... Can I keep riding like that?

Is it just to tighten the bearings or what do I do next?

//Magnus

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post #6 of 13 (permalink) Old 06-20-2013, 03:44 AM
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OK so there is movment back and forth when moving the fork legs with the wheel of the ground... Can I keep riding like that?

Is it just to tighten the bearings or what do I do next?

//Magnus
Just what I was thinking. Okay. I would not ride it, you may damage the bearing if it's not already damaged.
Have a look in the workshop manual on how to tension up the bearing, but I would honestly replace or at the least service that whole lot.

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post #7 of 13 (permalink) Old 06-20-2013, 03:53 AM
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Magnus;
do not ride your bike with loose bearings or lock ring

there is a torque value for the lock ring
there is a torque value + number of degrees to tighten the steering stem

it takes 2 MV tools to do this

post up where you are.....maybe someone near you has them, copies are on Ebay

you can guesstimate it with an adjustable pin spanner, but i don't recommend it

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post #8 of 13 (permalink) Old 06-20-2013, 05:05 AM Thread Starter
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So I ended up tightening tis thing and the play was gone. Is this the thingy you referred to?
[IMG]

I did not do anything about the lock ring, since I don´t have the tool and it still have the factory yellow mark up perfectly lined up.
I just tightend the "thingy" by ear as little as possible just enough to have the play gone.

Cheers!

Magnus

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Last edited by CBBOO; 06-20-2013 at 05:10 AM.
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post #9 of 13 (permalink) Old 06-20-2013, 05:44 AM
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Quote:
Originally Posted by CBBOO View Post
So I ended up tightening tis thing and the play was gone. Is this the thingy you referred to?
[IMG]

I did not do anything about the lock ring, since I don´t have the tool and it still have the factory yellow mark up perfectly lined up.
I just tightend the "thingy" by ear as little as possible just enough to have the play gone.

Cheers!

Magnus
Yeah that will do mate.

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post #10 of 13 (permalink) Old 06-27-2013, 03:27 PM
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It's your rotor buttons. Brembo's are notorious for this. I just remedied mine recently. Brake dust gathers in the rottor buttons causing the semi-floating to be soild. Soak all the buttons with brake cleaner. I used two cans. Then soak the rotors in a solution of HOT water and Simple green for a couple hours. Ideally, remove the petal washers and make them full floating.
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