Bearing problem

[Guest]

I believe that I have a bearing going out. Best I can tell its the one behind the front sprocket. It makes what I can only describe as a gear whine. I've heard a few bearings make this noise but not too many. The noise only changes with speed. Rpm doesn't affect it at all, and doesn't matter what gear I'm in or whether the clutch is engaged or not. Also doesn't seem to be coming from the rear tire. Any thoughts?

[Agemax]

have you pulled the cover off and had a look? it could be a loose sprocket rubbing against the cover, or a badly worn chain

[shinzon1]

Will be pulling the cover tomorrow. The chain and sprockets are only about a year old. Didn't notice the problem until about a week ago. Never had the issue after the new chain and sprockets. Only have about 3000 miles on them.

[shinzon1]

Pulled the cover. Nothing appears wrong. Sprocket is good and tight. No noticeable wear.

[shinzon1]

re-lubed the chain. no difference. going to replace rear wheel bearings again and see if that makes a diff.

[tkent02]

Does it make the same noise with no chain installed?

[shinzon1]

i cant get it to make the noise unless there is some type of load on it. tried it on the center stand with and without tire and no noise. only seems to happen with me rolling down the road. i can pull the clutch in and it still makes the noise.

[mrl1000l]

Eric suggests you read this:

http://www.thegsresources.com/_forum...d.php?t=176264

"His secondary drive bearings are shot!"

Best of luck with that.

[gsrick]

Eric said, "His secondary drive bearings are shot!"
He asked me to post this thread link of his for you to read.

http://www.thegsresources.com/_forum/showthread.php?t=176264&highlight=hundred+fifty+feet

Good luck, Rick
Got beat by 3 min.

[shinzon1]

I shouldnt have secondary bearings. i have a chain not a shaft. I'm pretty sure I've narrowed it to the chain and front sprocket. With the chain it is incredibly loud. I can hear it over the exhaust. I have a v&h pipe. Without the chain no noise at all. The sprocket and chain appear fine. Any thoughts?

[Agemax]

Eric said, "His secondary drive bearings are shot!"
He asked me to post this thread link of his for you to read.

http://www.thegsresources.com/_forum/showthread.php?t=176264&highlight=hundred+fifty+feet

Good luck, Rick
Got beat by 3 min.

ask Eric when is the last time he saw a chain drive GS with secondary drive bearings and a bevel gear?

( i cant believe you or Mrl1000l didn't spot that yourselves? )

[Agemax]

I shouldnt have secondary bearings. i have a chain not a shaft. I'm pretty sure I've narrowed it to the chain and front sprocket. With the chain it is incredibly loud. I can hear it over the exhaust. I have a v&h pipe. Without the chain no noise at all. The sprocket and chain appear fine. Any thoughts?

sounds like it could be the mainshaft bearings. take the front sprocket off, and pull the clutch off (so it is out the way), look and wiggle the shaft and see if you can see or hear any signs of damage

[tkent02]

Never heard of these failing on a GS.... Has it ever been run out of oil?

[shinzon1]

Not in the last three years for sure. It doesn't make me think bearings anymore since it does fine without the chain. It only makes noise with the chain on. Am I wrong in my thinking?

[Agemax]

Not in the last three years for sure. It doesn't make me think bearings anymore since it does fine without the chain. It only makes noise with the chain on. Am I wrong in my thinking?

just remember the chain will put lateral load on the shaft and bearings when it is attached. without the chain it is just a free spinning shaft under no loads.

before you go to deep you could always try fitting a new chain and see how it sounds then