Bonaro
Hero Member
- Aug 9, 2004
- 977
- 2,213
- Detector(s) used
- Minelab Xterra 70, Minelab SD 2200d, 2.5", 3", 4"and several Keene 5" production dredges, Knelson Centrifuge, Gold screw automatic panner
- Primary Interest:
- Prospecting
Ok, so as a matter of habit I always run a garden hose into the dredge pump intake and run it for a half hour or so before I head out to go dredge, just to make sure everything is good to go.
Last week as I was preparing to go dredge for a week, I followed my ritual and discovered a blown pump seal was slinging water everywhere....glad I tested it. I had a spare and it was a good excuse to change the compressor belt so I tore it down and went through everything.
The rubber skirt that connects the ceramic seal face to the brass part had completley tore in half, all the way around. It was like the rubber had deteriorated. This was a very curious failure considering I had replaced this very seal only 3 years prior. I would expect at least decade of run time on something like this.
Any ideas why this rubber failed so quickly?
Is there a way to preserve it during storage?
I was planning on dousing it with WD-40 from the outside but I would like to hear opinions.
Last week as I was preparing to go dredge for a week, I followed my ritual and discovered a blown pump seal was slinging water everywhere....glad I tested it. I had a spare and it was a good excuse to change the compressor belt so I tore it down and went through everything.
The rubber skirt that connects the ceramic seal face to the brass part had completley tore in half, all the way around. It was like the rubber had deteriorated. This was a very curious failure considering I had replaced this very seal only 3 years prior. I would expect at least decade of run time on something like this.
Any ideas why this rubber failed so quickly?
Is there a way to preserve it during storage?
I was planning on dousing it with WD-40 from the outside but I would like to hear opinions.
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