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Water pump shaft info
Just can't stay away
Joined:
2010/5/10 18:48
From Rockledge, Florida
Posts: 52
Hi all,

I just wanted to share this bit. Classic and Exotic Services sells shafts for water pumps and they list this item which is for 1931-1932 Packard 8. I wanted to let you all know that it's exactly the same shaft that's on my '36 std 8 as well.

https://www.classicandexotic.com/store ... d-8-water-pump-shaft.aspx

-Crin

Posted on: 9/7 19:36:59
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Re: Water pump shaft info
Forum Ambassador
Joined:
2007/3/14 16:01
From New Jersey
Posts: 15627
Interesting comments about the metallurgy.

Posted on: 9/7 19:56:34
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Re: Water pump shaft info
Just can't stay away
Joined:
2010/5/10 18:48
From Rockledge, Florida
Posts: 52
Indeed. I hope it lasts longer than the last time I had it rebuilt. Please see pictures. The shaft is quite worn.

Attach file:



jpg  20190907_171402.jpg (683.84 KB)
2652_5d7509055ae05.jpg 2048X1536 px

jpg  20190907_171407.jpg (437.80 KB)
2652_5d75090f65806.jpg 2048X1536 px

Posted on: 9/8 6:59:30
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Re: Water pump shaft info
Just popping in
Joined:
2018/4/29 15:57
From Southern Maine
Posts: 7
Crin, when properly rebuilt your pump should last many miles/years.

The shaft needs to be dead smooth and the packing carefully taken up. If the packing is over-tightened the gland can overheat quickly scoring the shaft. In most applications an occasional drip is to be expected.

The traditional shaft material is tool steel.
Possibly technology has advanced to where some flavor of stainless steel is better.

Checking the water pump for leaks should be part of your underhood inspection.

The surface speed of that shaft is considerable and as normal RPM of the engines increased over the years and cooling systems became pressurized, it became more difficult to maintain the pump without leaks. I suspect the introduction of permanent anti-freeze may have also played a part in the introduction of lip and later ceramic seals.

Good luck.

Posted on: 9/8 17:38:44
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Re: Water pump shaft info
Forum Ambassador
Joined:
2007/3/14 16:01
From New Jersey
Posts: 15627
Agreeing completely with Jim. I've tried over the years to keep my packing adjusted to allow the occasional drip of coolant. The pump has been happily doing its thing for decades.

Posted on: 9/8 17:44:45
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Re: Water pump shaft info
Just can't stay away
Joined:
2010/5/10 18:48
From Rockledge, Florida
Posts: 52
That's where I went wrong. I didn't know how that pump was sealed because I sent it out to get rebuilt years ago and that was that. Taking it apart and learning about it now made me realize why it drips and not to over tighten the packing - which I did simply because I didn't realize how it worked. Live and learn ...

Thank you all for your comments.

Posted on: 9/15 14:06:29
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