650R water pump leak


5 replies to this topic
  • columbusXR

Posted September 10, 2006 - 07:51 AM

#1

Anybody out there have a problem with the front (drain) bolt - the one with the copper sealing washer - on the water pump housing leak?? I have tried cleaning it, applying appropriate torque, etc to get to seal, but it has this very slow ongoing leak from around the bolt head. No cracks on the housing and I have replaced the internal O-rings. Any thoughts would be appreciated!!

  • snaggleXR650

Posted September 10, 2006 - 07:56 AM

#2

No problems on my '00 650R. Nor have I ever heard of such a leak. Buy a new copper washer and try it? Or maybe put a single layer of teflon tape on the threads?

  • frankstr

Posted September 10, 2006 - 01:25 PM

#3

I've never had mine off, But if the copper washer is a sealing washer I would use some aviation sealer on the copper gasket..Even if you put a new gasket on it....You can pick the stuff up at any auto parts store...

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  • metisse

Posted September 10, 2006 - 05:57 PM

#4

Try annealing the copper gasket before you buy a new one, - remove the copper gasket, heat it cherry red and dunck it in cold water - this will make it soft again and give you the best chance of sealing

  • Max Power

Posted September 10, 2006 - 06:43 PM

#5

Anybody out there have a problem with the front (drain) bolt - the one with the copper sealing washer ... Any thoughts would be appreciated!!


Nope. Why did you take the pump off?

Posted Image

  • calxi

Posted September 11, 2006 - 07:29 AM

#6

Nope, I have mine out several times flushing and replacing the radiators and hoses. Using proper torque and a new washer should fix the prob. Just the slightest crack on mine and she starts to drip fluid. Also check to see if the raised boss has "burr" in it that keeps the washer from sealing flat.





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