gregeast

My auxiliary water pump, you know the electric one that circulates coolant after shutdown, is leaking coolant. I took it apart and nothing appears amiss other than that the o-ring that seals the bottom half to the motor looks a little tired and brittle. I tried using some carfully placed gasket sealer but not certain if it's going to hold.

Anyone know if it's possible to buy this o-ring by itself? It's an odd shape with a kink in it, not perfectly round. A new pump is $195, I hate to have to fork that out for want of a $3.00 o-ring.

Thanks,

Greg

snappy

PET does not list it. from what I can tell.
just take the o-ring to a parts store and ask them if they have one of those, you never know they might just find you a replacement. many stores stock tons of o-rings, and dont have to special order them.

is it an o-ring or a gasket? is it a slotted oring?

If it is slotted then it should not mind the shape it's in. I had a few custom made round orings made by a gear box rebuilding company for $5 a pop back home. they made 3 for me in less than 10 min. you might try it out.

hosrom_951

Yeah, that area is just a little damp on mine.......

If you find out what seal you used, that would be great (size and all)

sayporsha

I have a good used pump from an 86 951 for $50 plus shipping.

Charlotte944

Don't bother. Chances are the impeller shaft seal is leaking. As I understand the situation this is a graphite seal and is not available as a seperate part. The O-Ring is there to keep water (like rain water) from entering the motor housing. The pump is not repairable.

gregeast

Sayporsha, PM sent.

Cliff, thanks for the insight. The more I looked at it the more sceptical I became that it was just that o-ring on the motor housing. Once I get a new one I'll tear down the old one and see what I find.

Greg

sayporsha

Sounds like a fun science project, for sure!

I got your PM, thanks.

daniel951

greg let me know what kind of o-ring it is and i will see if i have one at work because there are tons of o-rings and i will hook u up for free

gregeast

Thanks Daniel, I really appreciate the offer. Unfortunately, I've concluded that the o-ring isn't the source of the leak, it appears to be impeller shaft seal :-(

Thanks again,

Greg

daniel951

i know a guy in colorado springs that had alot of extra 944 turbo parts i will try giving him a call and see if he has a water pump