Question about 2005 Honda CRF 450 R

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Waterpump impellar removal

How do you remove the waterpump impeller

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  • Anonymous Feb 28, 2009

    i cant take off inpeller because it keeps turning

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First you want to remove the water pump cover, under that you will see the impeller and it should have a 6mm bolt, (10mm head), that you will need to remove. Remove the bolt and then the impeller will lift off a "D" shaped shaft. Note that there will be a copper washer under the bolt securing the impeller, you should replace that every time you remove the impeller bolt because it prevents water from leaking through the shaft into the crankcase.

Posted on Dec 08, 2008

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Posted on Jan 02, 2017

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To replace the new seals you must drive them in perpendicular to the impeller shaft with the manufacture markings to the inside. The water seal is installed from the outside and the oils seal from the inside.

There is a tool used for installing the seals called a seal driver but you could make one in a pinch. The seal driver makes contact with the outside diameter of the seal where it is solid and has a metal core. The inside diameter is soft and flexible and should not be used to push the seal in place however it can be used to keep the seal driver centered over the outer diameter and to keep the seal moving in a strait line perpendicular to the impeller shaft.

Once the new seals are in place they should be greased with some lithium soap based grease.

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Hi,

The correct procedure is to remove the RHS engine cover. Then remove the impeller and impeller shaft.
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Enjoy the ride

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