So has anyone taken the time to get a break down of what's required to rebuild and Aux water pump? With the cost of these thing's I thought I'd ask this question.

My was acting up and a good soaking in PB blaster and some lube in the rear and front bearings brought it back to life.

But for how long. The bearing look fairly common and a new bottom gasket and O-ring seal should not be that hard to source. The trick part is getting the thing apart with the pump impeller pressed onto the motor shaft.

Any ideas of what and where to source parts?

Thanks.

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Mad_Matt's Current Stable:
Oil Burners:
09 Jetta TDI The highway queen @ 105k
83 300D. Sold
Gassers:
16 A4 sport line
10 Passat
83 Recaro Trans AM WS6 Bone Stock Survivor
11 Harley Ultra

Any luck with new info on this subject yet ?
I was trying to disassemble and didn't want to break it. Let me know if you learn more?

wait here we go I found one , if you didn't here you go

http://www.peachparts.com/shopforum/diesel-discussion/170839-fixed-auxiliary-water-pump.html

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Eric in Plano,Tx
85 300D 277K overall miles
65K on WVO (2 tank)
Rebuilt Transmission at 245k miles.

96 CE LT1
94 Nissian Hardbody
96 F250 XLT PowerStroke (also runs on WVO)

They don't look very rebuildable to me. If you can find a used one that's been in a car with frequent coolant changes it should be good. It's infrequent coolant changes that get them.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

I've had several apart. It's hard to find a good used one and got tired of looking, so I ended up buying new. I did find a good one at one time, but it didn't last long. Have not seen any rebuild parts, and have run across at least two different versions with non-interchangable parts. There is a chance a good cleaning would fix one, but from my experience, antifreeze gets into the motor and ruins the motor. A lot of different years and models used the same pump, so if you have a lot of junkyards in your area and the time, you'll probably find a good one eventually.

I had one that was leaking at the shaft. I took the pump apart and found that there is a nice thrust seal that was in great shape, but the rubber on the OD shrank so it was not tight in the pump housing. I put some sealer around the seal and put it back together, no leak.

Didn't have the motor apart, but I am sure the bearings are standard bearings.

Here is a link to some pics I took with the pump half apart.
http://www.peachparts.com/shopforum/diesel-discussion/304764-resealed-my-auxiliary-pump-today.html