2009 FE450 water pump

cybertoothtiger · Mar 22, 2014

Hi,

Yes i've read the seemingly endless threads on this weep hole issue but i'm still not quite sure what needs replacing?

I replaced the water seal but then i boiled the bike in some really tight single track and it boiled and flooded out of the weephole. I've checked it again and it seems that the new seal has been worn slightly leaving grainy rubber residue on the oil seal. Is this a sign that the shaft bearing needs to be replaced and if so i presume i need new oil and water seal? There is freeplay on the water pump impellor also so i assume this is also past it's use by date?

Pic's attached.

Any help appreciated

cheers

Jamie

[attachment=0:1u13qxse]1-20140309_161502.jpg[/attachment:1u13qxse]

seal residue?

[attachment=0:1u13qxse]1-20140309_161502.jpg[/attachment:1u13qxse]

old seal and new seal showing wear

berglsmerg · Mar 22, 2014

So just make sure;

Is your radiator cap good
Is your vent hose free of obstruction or restrictions
Have you fitted the coolant seal the right way ? ( does the spring garter face the impeller )
Is the pump shaft grooved on the sealing area ?
Are you sure you haven't donea head gasket ?

Can you be more specific about the play you describe ?

cybertoothtiger · Mar 23, 2014

berglsmerg said:
So just make sure;

Is your radiator cap good - YES
Is your vent hose free of obstruction or restrictions - YES
Have you fitted the coolant seal the right way ? ( does the spring garter face the impeller ) - YES
Is the pump shaft grooved on the sealing area ? - NO
Are you sure you haven't donea head gasket ? - HOW CAN I TELL? There is no oil in the water and vice versa and no sign of leaks externally.

Can you be more specific about the play you describe ? - with the impellor on the shaft there is about 5mm of 'free play' rotation when moving the impellor by hand, the shaft itself does not move

Answers in quote above.

Cheers, J

berglsmerg · Mar 26, 2014

Sometimes with the engine at operating temp, with the rad cap off you might observe some small bubbles in the coolant or some oil/hydrocarbon staining. Also you can have the coolant tested.

If your seals rad cap etc etc are fine and you still have lots of coolant gushing out of the weep hole then I'd say yor HG is toast.

tkyyro · Oct 14, 2014

Quite amazing to me that the biggest bike company cannot figure out which way the seals go. Embarrassing?!

2009 FE450 water pump

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