Author Topic: Fork Spring Noise  (Read 2520 times)

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Offline dmazz71

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Fork Spring Noise
« on: March 16, 2011, 11:21:54 AM »
Hi All,

I have an 03 500 and noticed some sort of spring noise that seems to be coming from the right fork.  When I hold the brake and slowly pushed down on the handlebars, I hear a little click when the fork compresses.  I don't hear anything on the left side, so I'm assuming that something is going on.

Could this be a sign that the fork oil is low?  The bike did sit for a while, but I can't see any signs of an oil leak.  The area around the seals are relatively clean.

Thanks
Dan

Offline cbxracer30

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Re: Fork Spring Noise
« Reply #1 on: March 16, 2011, 12:46:55 PM »
Bel-ray fork oil used to have what they called "swell" in the oil to make the seals swell and keep a good seal , unfortunately this also causes all the plastic parts inside to swell also on bikes that sit along period of time. On bikes that are continuously ridden the motion in the forks keep the plastics wore down , but on the bikes that sit the plastic parts inside the springs - swell and jam up inside the springs causing forks to become stiff and or stick. This could be your problem. To fix this problem you need to take the forks apart and sand donw these parts.CBX
Yep, you can ride it - if YOU can start it !!

Offline dmazz71

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Re: Fork Spring Noise
« Reply #2 on: March 16, 2011, 01:19:08 PM »
Thanks for the reply.  That makes sense, since It has been sitting a while with the original fork oil. 




Offline USMC 500

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Re: Fork Spring Noise
« Reply #3 on: March 16, 2011, 01:34:41 PM »
I'm about to change the fork seals on my K5, is there an easy way to do it or do i have to take my forks completely apart??  If so do I need special tools?
I once heard my buddy Bill ask Danny Hamel after a race....
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Motorrad

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Re: Fork Spring Noise
« Reply #4 on: March 16, 2011, 01:40:16 PM »
I'm about to change the fork seals on my K5, is there an easy way to do it or do i have to take my forks completely apart??  If so do I need special tools?

easyer than me explaining it.

Make sure you inspect all the bushings for wear...

http://www.youtube.com/watch?v=Y43k1qFVGW4
http://www.youtube.com/watch?v=C9ICr-DOmdk&feature=relmfu
« Last Edit: March 16, 2011, 01:43:06 PM by Motorrad »

Offline ktmdude

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Re: Fork Spring Noise
« Reply #5 on: March 16, 2011, 04:52:09 PM »
When I had my forks re valved, and re sprung on my 300, they made noise when pushing the bike. (Bike moving, motor off) Turned out the Race Tech springs are a smidge smaller than the stock ktm ones, so they rattle around a bit. Not sure that's your problem, but it's was my experience.

Offline Polar-Bus

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Re: Fork Spring Noise
« Reply #6 on: March 17, 2011, 01:43:27 AM »
Hi All,

I have an 03 500 and noticed some sort of spring noise that seems to be coming from the right fork.  When I hold the brake and slowly pushed down on the handlebars, I hear a little click when the fork compresses.  I don't hear anything on the left side, so I'm assuming that something is going on.

Could this be a sign that the fork oil is low?  The bike did sit for a while, but I can't see any signs of an oil leak.  The area around the seals are relatively clean.

Thanks
Dan

Also make sure you are not hearing the floating front brake rotor clanking while you have the brake applied. I have the same clunk, and it's my brake rotor. When I first felt and heard this noise, I thought I had a bad fork bushing, or my triple tree preload was loose
01' KX500
'84 GPz1100
'87 GSX-R  750
'06 HD Fatboy
'73 Kawi H1
'03 CRG KX500 Shifter kart