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Stationary Engines Discussion Forum

Water Pump Packing Nut Identification

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james kennedy

12-13-2007 19:51:37




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I have been advised that the water pump on my Hercules IX-series engine may have packing nuts on either side of the pump and merely need repacked. The pump currently leaks.

I have included a photograph below of what I believe is the packing nut. There is one of these of each side of the pump.

Please review the photograph and advise me if this appears to be a packing nuts.

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dobber

12-19-2007 12:24:04




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 Re: Water Pump Packing Nut Identification in reply to james kennedy, 12-13-2007 19:51:37  
That just looks like the nut for mag drive hub. Like said a packing nut would screw into the water pump. Can't see the pump in your pic. Some pumps that had packings also instead of a large nut used a plate that in cinched down with 2 bolts against a spacer that pushes against the packings inside pump. Check with local auto supplies or engine rebuilders if they have a water pump rebuilder in your area they send them off too. If it's just centrifugal type pump most industrial supplies will have the seals or also try mcmaster.com for seals.

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Kevin Meier

12-14-2007 06:29:18




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 Re: Water Pump Packing Nut Identification in reply to james kennedy, 12-13-2007 19:51:37  
That really doesn't look like a packing nut. It kinda looks like there is a spring seal with tabs in the slots that are cut out? Hard to tell by the picture.



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noncompos

12-13-2007 22:02:42




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 Re: Water Pump Packing Nut Identification in reply to james kennedy, 12-13-2007 19:51:37  
I'd say it's doubtful...a packing nut screws into the water pump housing...the packing material is like wax or graphite impregnated string, and it's compressed by the packing nut enough to make a seal...as the packing gradually wears, and begins to leak, you as gradually tighten the nut to compress the material into a seal again...you put in new packing material by unscrewing the nut, sliding it along the shaft far enough to wind new packing material around the shaft into the cavity left by the unscrewed packing nut...then you screw the packing nut back in, compressing the packing material until it seals the water leak...
The nut in the pic looks more like part of the drive coupling/connection to me, and it doesn't look like there's room there for packing nuts, but I'm perfectly ready to defer to anyome more experienced with shaft-drven pumps.

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