Quick Water Pump Question

YamerDown

YamerDown

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Joined
Sep 21, 2006
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911
Location
Ottawa
03 Viper drips coolant out the water pump housing. From what I've read this is caused by a failure of the mechanical seal.

My questions is when I go to replace the seal is that the only part I need?
Also, it looks like there is an updated part number? I assume I want the one ending in 10-00?

SEAL, MECHANICAL 11H-12438-10-00 (replaces 11H-12438-00-00)

Thanks,
Bruce
 

While your in there replace all teh seals, there is a oil seal as well. Good time to check everything as well. My viper waterpump was a PITA until I finally got it fixed then sold it the next year...wheres that baning head against wall smiley...
 
kinger said:
While your in there replace all teh seals, there is a oil seal as well. Good time to check everything as well. My viper waterpump was a PITA until I finally got it fixed then sold it the next year...wheres that baning head against wall smiley...
Click to expand...
I assume you mean #5 below?
 

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How common is this issue????Is this common on all year Vipers???? What kinda mileage have these issues started at??? I have 2000 miles on my Viper and have noticed any leaks as of now.
 
Wow, I did not know about a water pump oil seal. I just placed my rebuilt Viper motor back in the sled this weekend. I had 7,000 miles on mine with no leaks. I replaced the water pump o-ring but not the oil seal. You should be able to replace the water pump o-ring with out pulling the motor. I could see were you might have to pull the motor to replace the oil seal as you would need to remove the oil pump so you can hold the water/oil pump shaft to replace the oil seal.
G.B.
 
ExpertXViper said:
How common is this issue????Is this common on all year Vipers???? What kinda mileage have these issues started at??? I have 2000 miles on my Viper and have noticed any leaks as of now.
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Do a search, quite common from what I've read. Leak is very small, like 2 or 3 drops per ride. Coolant level drop is not noticeable. The concern is if it gets by the seal and has any pressure you get a liquid cooled crank, which would not be good.

Mine was doing it the day I bought it (used). Machine had 4300 miles on it back then.
 
Gone Blue said:
Wow, I did not know about a water pump oil seal. I just placed my rebuilt Viper motor back in the sled this weekend. I had 7,000 miles on mine with no leaks. I replaced the water pump o-ring but not the oil seal. You should be able to replace the water pump o-ring with out pulling the motor. I could see were you might have to pull the motor to replace the oil seal as you would need to remove the oil pump so you can hold the water/oil pump shaft to replace the oil seal.
G.B.
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Again, from what I've read a lot of people had the problem where they would see the drop in the belly pan and they would replace the o-ring seal. However that is not the source of the leak and the problem continued.
 
YamerDown said:
Again, from what I've read a lot of people had the problem where they would see the drop in the belly pan and they would replace the o-ring seal. However that is not the source of the leak and the problem continued.
Click to expand...

Were does it leak from if not the o-ring? G.B.
 
Gone Blue said:
Were does it leak from if not the o-ring? G.B.
Click to expand...
Source of the leak is the mechanical seal. As coolant gets past it will come out the weep hole in the back of the pump housing. It's totally out of sight, which is why most people think it's the o-ring. The coolant runs down the back of the housing and drips off right at the bottom where the o-ring is located. Use a mirror and look at the hole. If you see white or green crusties around it, you have a problem.
 
Thanks YamerDown,

I do now remember seeing some green crusties around the weep hole when I pulled the motor. I am going to have to look into this before I go much further. Sorry if I hijacked your post. G.B.
 
Gone Blue said:
Thanks YamerDown,

I do now remember seeing some green crusties around the weep hole when I pulled the motor. I am going to have to look into this before I go much further. Sorry if I hijacked your post. G.B.
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Green Crusties - our technical term for the day, lol.
Anyway, no problem. Glad I could help.

Back to my questions though:
Any parts other then mechanical seal that I should purchase to fix this issue?

Kinger, is the oil seal part #5 in that diagram? See Reply #6.

Thanks
 
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YamerDown said:
Green Crusties - our technical term for the day, lol.
Anyway, no problem. Glad I could help.

Back to my questions though:
Any parts other then mechanical seal that I should purchase to fix this issue?

Kinger, is the oil seal part #5 in that diagram? See Reply #6.

Thanks
Click to expand...

YamerDown,

It appears that item #5 is the oil seal you are looking for. See print out of Yamaha micro fiche below.

G.B.

Tag Description Req Price
1 Gear, Impeller Shaft (8ek1)
2 Bearing (8ek1) (superceed: 93306-00105-00)
3 Bearing (B6000) (8ek1) Add to Cart
4 Seal, Mechanical (8ek1) (superceed: 11H-12438-10-00)
5 Oil Seal (8ek1)
6 Circlip (8ek1) (superceed: 93420-28055-00)
7 Impeller, Water Pump (8ek1)
8 Bolt, Flange (8ek1) (superceed: 95817-06012-00)
9 Washer, Seal (8ek1)
 
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