Water pump question
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From: Little Rock, AR
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From: Tonawanda N.Y
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Most water pumps and also the felpro timing cover gasket set come with 2 o-rings for the water pump drive coupler. The o-rings fit in the groove begind the spline section of the drives on the engine and water pump. In a pinch you can measure the O.D. of the drive groove and the I.D. of the unsplined part of the coupling and get a 0-ring that is alittle bigger than the difference of the two measurements. The dealer could probably get the o-rings if you can't find any. I've got the o-ring dimensions at home, I could post them up later.
http://www.rockauto.com/catalog/more...277&cc=1251942
Found another thread that somebody said the o-rings are felpro p/n 407. I can't confirm this right now though.
http://www.rockauto.com/catalog/more...277&cc=1251942
Found another thread that somebody said the o-rings are felpro p/n 407. I can't confirm this right now though.
Last edited by guppymech; Apr 3, 2014 at 01:04 PM.
Thread Starter
TECH Apprentice
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From: Tonawanda N.Y
Most water pumps and also the felpro timing cover gasket set come with 2 o-rings for the water pump drive coupler. The o-rings fit in the groove begind the spline section of the drives on the engine and water pump. In a pinch you can measure the O.D. of the drive groove and the I.D. of the unsplined part of the coupling and get a 0-ring that is alittle bigger than the difference of the two measurements. The dealer could probably get the o-rings if you can't find any. I've got the o-ring dimensions at home, I could post them up later.
http://www.rockauto.com/catalog/more...277&cc=1251942
Found another thread that somebody said the o-rings are felpro p/n 407. I can't confirm this right now though.
http://www.rockauto.com/catalog/more...277&cc=1251942
Found another thread that somebody said the o-rings are felpro p/n 407. I can't confirm this right now though.
Thread Starter
TECH Apprentice
Joined: Feb 2010
Posts: 357
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From: Tonawanda N.Y
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Joined: Dec 2008
Posts: 4,145
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From: Little Rock, AR
The o-rings are what keep the splines clean. Grease in and dirt out. #156 in the pic link I gave in post #3. They go in a groove near the end of each splined shaft (came from the factory that way). They often get real flat or crumble away.
From my post #9, Part Numbers and dimensions for WP drive coupling o-rings if you don't want to use GM parts for whatever reason.
Felpro o-rings as listed on the contents of the timing cover gasket set TCS 45953. 2 ea. p/n 407. Looks like 50 cents ea at most auto parts stores.
I used Aircraft o-rings, p/n M83248/1-012. .375 id, .500 od, .062 wall.
Available from many places, below is just a example:
http://www.oringsusa.com/catalog/pro...ts_id=66008536
Felpro o-rings as listed on the contents of the timing cover gasket set TCS 45953. 2 ea. p/n 407. Looks like 50 cents ea at most auto parts stores.
I used Aircraft o-rings, p/n M83248/1-012. .375 id, .500 od, .062 wall.
Available from many places, below is just a example:
http://www.oringsusa.com/catalog/pro...ts_id=66008536
Last edited by guppymech; Apr 3, 2014 at 11:47 PM.
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From: Tonawanda N.Y
Gotta pull it back apart tomorrow, just realized i for got to put some sealant on the bolts, what a dumbazz move WTF luckily all I did was mount up the pump and nothing else, gotta love trying to become a do it yourselfer, kept the opti dry for the most part, hope I didn't screw that up
You mean the two bottom w/p bolts? You don't need to pull anything apart if that's the case. Just take one bolt out at a time, put sealant on threads and torque to spec. Two bottom bolts are the only ones that need sealant.
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ya, well I pulled it back off to start from scratch, of course one of the gaskets ripped do now im f'ed, next time im taking it in
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Don't sweat it. Gaskets only cost a couple dollars for the pair. Think of how much you're saving doing it yourself vs. taking it to a shop. Everyone has to start learning somewhere.