Water Pump Seal Help - MVAgusta.net
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post #1 of 29 (permalink) Old 12-24-2016, 10:06 AM Thread Starter
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Water Pump Seal Help

Coolant is coming out of the hole in the back of the water pump, so I ordered a new seal. I have the pump off the bike and the impeller removed. However, I do not know how best to proceed from this point.

Is there a way to remove the seal without removing the shaft?

Assuming I have to remove the shaft: According to the manual, I have to heat the water pump body up to 120˚C, then remove the shaft. I have a 2008 Brutale and the shaft design changed from what is in the manual. Which way does the shaft come out (I just want to make sure I don't try to tap it out in the wrong direction)?

Just for kicks, I looked at the 990/1090 engine manual and they don't even show how to take the pump apart anymore.

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post #2 of 29 (permalink) Old 12-24-2016, 10:24 AM Thread Starter
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Okay, reading the manual for the fifth time, I am not even sure if I have to heat anything to remove the shaft. I can't tell if the shaft is supposed to just come out (though which direction is still not clear, especially with the newer design that has two ridges on it, see screen shot of parts below) and the heating the pump body is only if the bearings need to be removed?
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post #3 of 29 (permalink) Old 12-24-2016, 10:34 AM
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no heating required, but gentle force, when clip removed

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post #4 of 29 (permalink) Old 12-24-2016, 12:54 PM Thread Starter
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Quote:
Originally Posted by hb88xx View Post
no heating required, but gentle force, when clip removed
Thanks for the quick reply. I am just trying to understand how this is all held together. I am assuming if I have to remove the clip, then I should remove the shaft by pushing it out towards the engine side? So when I remove the shaft, the bearings will be on the shaft? Otherwise, why remove the single clip?

I am trying to clarify, because on the older version, there are two clips, and the smaller clip was around the shaft - so I could see why you'd have to remove that if all you wanted to remove was the shaft and not the bearings. Does that make sense?

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post #5 of 29 (permalink) Old 12-26-2016, 12:02 AM
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I just did this work on my 2004 brutale, yes the shaft must be taken out of the pump housing, c-clip. There were two sets of seals, both easy to replace. You'll want a new set of o-rings for reassembly....there are 3. There is a sticky under the tech tips sections that has good color photos and some added instructions. Good luck.
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post #6 of 29 (permalink) Old 12-26-2016, 02:10 AM
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You're looking in the wrong manual mate.
I know they're not all exactly the same but...
Did you check this section ? - http://www.mvagusta.net/forum/showthread.php?t=107834
This thread - http://www.mvagusta.net/forum/showthread.php?t=36945

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Last edited by Donsy; 12-26-2016 at 02:20 AM.
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post #7 of 29 (permalink) Old 12-26-2016, 10:01 AM Thread Starter
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Quote:
Originally Posted by Thanksineededthat View Post
Chris
I just did this work on my 2004 brutale, yes the shaft must be taken out of the pump housing, c-clip. There were two sets of seals, both easy to replace. You'll want a new set of o-rings for reassembly....there are 3. There is a sticky under the tech tips sections that has good color photos and some added instructions. Good luck.
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Quote:
Originally Posted by Donsy View Post
You're looking in the wrong manual mate.
I know they're not all exactly the same but...
Did you check this section ? - http://www.mvagusta.net/forum/showthread.php?t=107834
This thread - http://www.mvagusta.net/forum/showthread.php?t=36945
I have been through all of the threads I can find, including the ones you list, and nowhere does anyone mention if the shaft needs to be pushed out in a certain direction. Also, I am looking in the engine manual for the 910S. There isn't an engine manual for the Euro3 910R or the 1078 Brutale - at least not on your website.

As you can see in the image from the thread you linked to above, the shaft design changed and now has ridges on it and only a single cir-clip is used and it is not on the shaft but against the housing. I am concerned that because the shaft has those two ridges it may only come out in one direction (not knowing what the inside of the housing looks like).

So far I have not been able to get the shaft out.
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post #8 of 29 (permalink) Old 12-26-2016, 10:11 AM
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Chris, assembly diagrams show the parts in order of assembly.

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post #9 of 29 (permalink) Old 12-26-2016, 11:12 AM Thread Starter
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Chris, assembly diagrams show the parts in order of assembly.
Thanks, Chuck, that would make sense to me, I am just afraid of breaking anything, that's all. And when it doesn't seem to be coming out so easily for me, I just am trying to make sure I am not doing anything wrong.

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post #10 of 29 (permalink) Old 12-26-2016, 12:07 PM
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If you have the requisite clip undone, it will probably take some coaxing to the the shaft out.

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