sometime knob rotate, cam chain

[jorgeno]

Last year I follow Mr. Brian Wringer`s Cam Chain Tensioner Rebuild, on my GS650GT. And it work very fine. I have run about 3000km after that. But now, when I start, sometime knob rotate (and it sound noisy), but stops when I rev it. What should I do now. Try to reset it again?

Sorry for my bad english (I`m norwegian )

[tom203]

Last year I follow Mr. Brian Wringer`s Cam Chain Tensioner Rebuild, on my GS650GT. And it work very fine. I have run about 3000km after that. But now, when I start, sometime knob rotate (and it sound noisy), but stops when I rev it. What should I do now. Try to reset it again?

Sorry for my bad english (I`m norwegian )

My maternal grandpa was from Norway! Anyways, are you sure you released locking screw 1/4 turn and locked it tight, so sliding shaft can advance and take up chain slack? If that big knob is vibrating, something is wrong- like a lost steel ball, since this would allow shaft to push back.

[Dogma]

Maybe the torsion spring is broken or it has slipped out of the hole in the knob. Those are the only things I can think of that would allow the knob to rotate after 3000km of correct operation.

[JEEPRUSTY]

Remove and test it per specifications in the manual.
What a Flashback to the FTP crawling of the indices of the Trondheim site.

[jorgeno]

Thanks for the advice. I will check it out. Hopefully tomorrow. It is the irregularity that makes me confused

[jorgeno]

Update

If think the setscrew was not loosened enough, so that the pushrod was not all the way out. I adjust it and it seem to work fine now.

I`m so lucky that I sometime can use my bike in work, here is a picture from todays inspection

[mike_of_bbg]

That's a pretty specimen, sir. If you still get an occasional rattle from the cam chain tensioner, try adding another 1/2 turn of tension on the knob spring (make sure you lock the tensioner first with the lock screw and unlock it afterward obviously).