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Old 11-18-2013, 06:26 AM   #1
Orangecicle OP
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990 water pump shaft life?

I ride a 950. I have a friend who just bought a 2007 990. He suggested based on the PO's statement that the stock WP shaft of the 990 should last more than 15k miles. Very inconsistent with what I've heard over the years. Can someone confirm so that I can pass along the wisdom of the forum?
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Old 11-18-2013, 06:41 AM   #2
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My 06 was fine when I replaced it at 30K. No wear on the stock shaft. Just keep track of oil filter condition. If in doubt check inside of clutch cover for milky stuff.
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Old 11-18-2013, 06:42 AM   #3
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Not sure about the newer bikes, interested myself since i recently bought a 2011 990R.

Will have to drain coolant on mine anyways since I will be transfering the CJ beefier clutch basket and rekluse from the old 950 to the new bike.

/Johan
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Old 11-18-2013, 08:27 AM   #4
brents347
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At some point on the 990's KTM switched to the newer hardened shaft and the PFTE seal didn't they? What year was that?
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Old 11-18-2013, 10:46 AM   #5
Dusty
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2007........ new shaft and seal..............................

Had around 37,000 on mine and did not need it.

I think it boils down to if you flush the cooling system early in your bikes life as to how long they last and if the bike is overheated repeatedly.

Mine when i replaced it.

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Old 11-18-2013, 11:20 AM   #6
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I have a 2008 with 28k miles on the original shaft/seal, and a friend also has a 2008 with +50k miles on the original parts.
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Old 11-18-2013, 11:31 AM   #7
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I've got 15,100 on my 06 950 SM. It just started migrating water into the oil. I'd say that 15,000 mile replacement recommendation is pretty damn close.
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Old 11-18-2013, 11:56 AM   #8
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If you have the old seal & shaft (red seal, used before 2007 in EU IIRC) better replace it before going too far (20/30K km could be already too much).

The improved shaft & seal (grey seal) should last a lot more, i replaced mine after 50000km and the shaft was still like brand new; found similar good reports about the new one here on advrider.
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Old 11-18-2013, 11:56 AM   #9
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I'm at 36,000 miles on a 2010. No signs of coolant loss.
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Old 05-10-2015, 03:21 PM   #10
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This is all interesting stuff. That said I have a 2007 990 and am the original owner. I have been reading about pumps for years now on ADV, so I bought the rebuild kit but have yet ti install it. Keep waiting for signs like milky oil, wavy filter etc. I just changed the oil at 4,200 mile mark, good to go. I have 34,550 miles on the clock with the original pump. My philosophy is if it ain't broke don't mess with it (tinker) That said If i do a long trip I carry the kit with me and a tea bag fuel filter kit, O rings, one o ring for the clutch and a small bottle of mineral oil. fits in the bottom of my pannier (piece of mind).

Now just some food for thought. I have a friend who has had 3 KTMs and he had problems on all of them so after some discussion he thinks silicate based coolant are abrasive to the seal. I had flushed my system out during a valve job a few years back actually removed the radiator (makes the front valves easier to get to) since it was off I flushed it out too. I have been running a silicate free, phosphate free coolant since. It's only a hypothesis on the silicate but it was the difference between us.

Don't fret, just ride and enjoy but like the Boy Scouts... "Be prepared"

I will make sure and post when my pump starts petering out and the mileage

See you out there
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