jamin

There is a sleeve that goes over the water pump drive shaft, does it matter which way it goes? I slid it off and didn't pay attention,

agchoset

iTrader: (1)

It shouldn't matter; the spline drive is the same on both ends.

shbox

The end with the groove goes toward the engine block.

http://shbox.com/ci/water_pump.jpg

jamin

Thanks guys!!

agchoset

iTrader: (1)

Heh, oops. I guess I didn't notice that when I swapped my pump last week, and just got lucky. I'll go back to my corner now.

guppymech

iTrader: (7)

I think it's more important to grease the splines and use the o-rings to keep the lube in the coupling. IMO Moly grease is the best choice.

jamin

What o ring?

agchoset

iTrader: (1)

SO, is the coupler even able to be installed with the groove facing the pump? If so, what is the consequence of installing it backwards?

guppymech

iTrader: (7)

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.

jamin

bought a delco pump, no o rings

BALLSS

I have never seen the "WP" actually come with the "O" rings, maybe some do. The FelPro TC kit has them...along with the WP gaskets and seals should you need those also

jamin

ya I got those, did they not come with o ring from factory? or are they disintegrated?

guppymech

iTrader: (7)

I thought my new wp from Advance Auto came with the o-rings, but it's been 5 yrs since I bought it.

Cajun ELESS-ONE

my pump came with the orings. didnt put them on cuz i didnt know where they went. are they necessary??

shbox

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.

guppymech

iTrader: (7)

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

jamin

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

SS RRR

iTrader: (2)

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.

jamin

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

toomany

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.