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#1 |
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Now where did that come from?
Join Date: Nov 2008
Location: Milpitas, CA
Posts: 2,536
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Head bearings slightly loose
I noticed yesterday on my commute home that my head bearings were slightly loose. I'm hoping that I can tighten the assembly and not need to replace the head bearings as it has just become noticeable.
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Loosenut A.K.A. Mike YouTube channel - Mike Loosenut 2007 Yamaha FZ1 - Raven. Modded out 2005 GasGas EC300 (with plate), 2004 GasGas Pampera 280 (hers) And the 1975 CB500T Cafe project bike |
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#2 |
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My life is my message!!
Join Date: Feb 2012
Location: SoCal, for now..
Posts: 1,780
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Yea, it's probably just a loose nut...
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#3 |
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DFW-Texas
Join Date: Mar 2011
Posts: 230
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2006 Nakid! |16t | SpeedoDRD | DanMoto CF Slipon | Shorty Levers | Bar End Mirrors | Fender Eliminator | Integrated LED (Smoked) turn/brake lights | Plugged AIS | 12v Outlet | Heated Grip Pads | Tank Mounted GPS/Phone Mount | Round Headlight | Givi Windscreen | Easton Bars/Clamps |
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#4 |
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Now where did that come from?
Join Date: Nov 2008
Location: Milpitas, CA
Posts: 2,536
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Was that a rim shot I heard?
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Loosenut A.K.A. Mike YouTube channel - Mike Loosenut 2007 Yamaha FZ1 - Raven. Modded out 2005 GasGas EC300 (with plate), 2004 GasGas Pampera 280 (hers) And the 1975 CB500T Cafe project bike |
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#5 |
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My life is my message!!
Join Date: Feb 2012
Location: SoCal, for now..
Posts: 1,780
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#6 |
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Registered User
Join Date: Oct 2004
Posts: 4,003
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#7 |
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Now where did that come from?
Join Date: Nov 2008
Location: Milpitas, CA
Posts: 2,536
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Well, it's hard for me to explain. After years and years of riding off-road motorcycles, I developed a feel for it. The head bearings get hammered off-road compared to the road bikes in general. With that stated, let's see if I can do it justice. What I notice is that under hard braking to a stop, that when I let let off of the front brake to smoothly stop, there is a small clunk felt through the bars. It has a loose feeling. It will quickly get worse if not dealt with.
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Loosenut A.K.A. Mike YouTube channel - Mike Loosenut 2007 Yamaha FZ1 - Raven. Modded out 2005 GasGas EC300 (with plate), 2004 GasGas Pampera 280 (hers) And the 1975 CB500T Cafe project bike |
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#8 | |
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Certified Master Magician
Join Date: Nov 2005
Location: Bluff City, Tennessee
Posts: 3,864
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Quote:
It only takes a thousandth of an inch or two when the brakes are loaded and then unloaded to generate a hammering noise and feel that becomes amplified up through the forks. Loose head bearings or a brake condition, or even a fork problem, could cause the same symptoms. Upon my completed inspection these symptoms became a non issue, however that's not to say that will always be the case. Any noise or feel that seems abnormal should be checked out for safety's sake. -R |
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#9 |
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90480-12072-00
Join Date: May 2011
Location: hangin' with Toto
Posts: 4,122
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I suspect that they are not loose, but worn. Which makes them loose, but it's not like the nut backed out. You may have mentioned at some point how many miles you have on your bike, but I don't remember. In any case I'd plan on replacing them soon.
As you've no doubt seen on the dirt bikes, since they don't really turn that much they hammer little dents into the races. Doesn't take much at all to introduce some play. You can double check while the bike is stopped by locking up the front brake and pushing back and forth on the bars (front to back). If you feel or hear that little clunk in there, time to R & R.
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#10 |
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Full-on Bogan!
Join Date: Mar 2007
Location: Yammy Old-country
Posts: 478
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So, is it standard to replace the races with the bearings?
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#11 |
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Adrenaline Junkie
Join Date: Oct 2009
Location: Pittsburg, KS
Posts: 396
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Mine along with a buddy's does the exact same thing, so fear not, you aren't the only one. I'm suspecting wheelies is what have done it to ours....
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"A Harley Davidson is the most efficient way to turn gasoline into noise without the embarrassing byproduct of horsepower..." |
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#12 |
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Registered User
Join Date: Oct 2004
Posts: 4,003
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#13 |
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Registered User
Join Date: Dec 2003
Location: Vernon Hills, IL
Posts: 1,894
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Reparirman is right. This has been discussed to death on the FJR site as FJR brakes are even more noisier then FZ.
To truly test your head bearings put the bike on the center stand and have someone seat on the pass seat to raise the front up. Grab and hold front wheel and move it back and forth. If you feel clunk youknow you need to work on your bearings. Also, in that position handlebars should move freely to each side w/o snags or noise.
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Alex - 06 FZ1 Certifiable MSF Instructor MishaCycles, Inc. OEM parts and accessories|SIDI Boots | Amsoil Dealer MishaCycles on Facebook Misha Tactical Arms, Inc. on Facebook |
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#14 |
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Now where did that come from?
Join Date: Nov 2008
Location: Milpitas, CA
Posts: 2,536
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Repairman IS right. I pulled the top triple clamp and the bearings are tight and I cannot feel any play in the steering head. At least convertibars make pulling the top clamp easier.
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Loosenut A.K.A. Mike YouTube channel - Mike Loosenut 2007 Yamaha FZ1 - Raven. Modded out 2005 GasGas EC300 (with plate), 2004 GasGas Pampera 280 (hers) And the 1975 CB500T Cafe project bike |
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#15 | |
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Certified Master Magician
Join Date: Nov 2005
Location: Bluff City, Tennessee
Posts: 3,864
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Quote:
![]() -Roger |
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#16 |
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Registered User
Join Date: Jun 2009
Location: Greencastle, PA
Posts: 933
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I highly recommend replacing the bearings with tapered roller bearings (allballsracing.com) Inexpensive and fairly easy to swap out.
I may be crazy but this has become a standard must have to me. I notice much improvement in front end feel. The ball bearings bikes come with seem too finicky to me to get just the right amount of torque on them to have no play and not have a notchy feeling.
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'09 FZ1 '00 CBR929RR |
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