600 water pump seal - HCS Snowmobile Forums

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Old 01-01-2018, 01:21 AM   #1 (permalink)
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Default 600 water pump seal

Hello all.
I need help with my water pump machanical seal on my 2013 polaris switchback adventure.
It has 7600 km, Never gave any problem until my last ride. Blew the machanical water pump seal on a perfect trail.
Removed the water pump cover and found the impeller destroyed, nut came off, housing gouged and the seal broken into pieces.
Removed the seal from the shaft. Wow that was the hardest with the engine still in sled. Installed the new mechanical seal with the proper tool.
Then the impeller , gasket and housing.
Has the cooling system pressure checked. All good.
Filled coolant system and fired back up.
Ran mint. Did a bunch of test runs and full throttle launches. All good until i noticed coolant in the snow. WTF again.
So i repeated the same thing again.
Replaced everything new again.
Ran good for about 5km and then blew again.
Now im pulling the engine and investigating more.
I have spoken to dealers and they are not much help. I have read all the thread online and it did help a little. Just hope its not my cross shaft gear.
My oil pump shaft has about 0.030" end play and thats the max.
Any help please.
Thx steve
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Old 01-01-2018, 02:22 AM   #2 (permalink)
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You are sure the coolant is coming out of the weep hole for the pump?
To be honest,Ive never taken the chance on doing it in the sled.I just pull the engine out so I can make sure both seals are seated properly.
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Old 01-01-2018, 11:57 AM   #3 (permalink)
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Yes all 3 times it leaked coolant from the weep hole.

Steve
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Old 01-03-2018, 09:26 AM   #4 (permalink)
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my 13 600 blew water pump at about 8000 miles.they had to replace crank due to damage to pump drive.may want to check drive gear closer?
actually they replaced complete bottom end but was under warranty.
sounds like these have a problem with water pumps?
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Old 01-03-2018, 09:38 AM   #5 (permalink)
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I don't think its possible to properly install the water pump seal in the sled. You gotta pull the engine. The seals are pretty delicate. The carbide faces of the seal can crack easily and leak. A static seal test will show no leaks. Once the seal is rotating it will start leaking if damaged.
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Old 01-04-2018, 12:51 AM   #6 (permalink)
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Pulled engine. Will post pics of water pump seal and any other defect I find.
It funny how I can drive it full out for about 5 km before it starts leaks again.
I hope it's something simple. How do I inspect the worm gear?

Steve
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Old 01-04-2018, 10:27 AM   #7 (permalink)
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You have to remove the oil pump. The water pump shaft comes out the oil pump side. What seal installation tool do you have?
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Old 01-05-2018, 12:43 AM   #8 (permalink)
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The tool I'm using is the same Polaris sells with a step in.
Does anyone know what holds the WP and oil pump shaft in place? The manual says it can be removed from the WP side, but not sure.
Thx
Steve
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Old 01-05-2018, 11:11 AM   #9 (permalink)
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There is a brass bushing behind the lip seal, which is behind the water pump seal. The bushing has a small screw that holds it in from the bottom of the crankcase. My service manual says the part is not serviceable. I have removed these before. You still have to remove the oil pump and press out the bushing.
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Old 01-06-2018, 10:29 AM   #10 (permalink)
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Thx for all the good info.
One dealer suggested me to look at these 2 bushing for wear.
They think that under load the shaft play is too much and separates the Mc seal.

Thx steve
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