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Old 09-10-17, 12:23 PM   #1
skankin_giant
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Default Stuart Piston Pump

Well picked up the pump today and initial looked ok but wasn't making any promising nosies... only thing which seemed missing was the woodruff key, luckily I have a good supply.

IMG_20171009_105113 by Stephen Williams, on Flickr

IMG_20171009_105124 by Stephen Williams, on Flickr

Silly me I had a choice of two, one ready to go from Adam or one which was half the price..... you would have thought I would have learned by now.....

Investigation started in earnest.


Ah

IMG_20171009_112038 by Stephen Williams, on Flickr

Oh

IMG_20171009_114454 by Stephen Williams, on Flickr

Bugger. (though I could see this was broken previously.....

IMG_20171009_115431 by Stephen Williams, on Flickr

It also needs a gland nut.

IMG_20171009_114501 by Stephen Williams, on Flickr

Nothing that will put the coffin nail in the pump, the back end seems fine it just the business end.... I can't seem to separate the valve chest at the moment to check the bottom springs etc, they look of through the top. Just a bit more work than I thought....
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Old 09-10-17, 12:38 PM   #2
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I have come to the conclusion Stephen, speaking from bitter personal experience, that if the word 'STUART' is cast onto something mechanical it will almost certainly require far more work than initially thought!

Pete.
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Old 09-10-17, 12:40 PM   #3
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All because I wanted to see the little crankshaft turning....
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Old 09-10-17, 01:42 PM   #4
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Looks like the seller put some nice green paint on it to tart it up a bit before you happened along

I wouldn't bother welding the broken cap, easy enough to make out of similar thickness steel plate.

.... and did you really take that apart on the kitchen table

Phillip
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Old 09-10-17, 01:45 PM   #5
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Yea that was nice of him..... still 30 wasn't too bad.
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Old 09-10-17, 03:33 PM   #6
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Quote:
Originally Posted by Windrush View Post
I have come to the conclusion Stephen, speaking from bitter personal experience, that if the word 'STUART' is cast onto something mechanical it will almost certainly require far more work than initially thought!

Pete.
I'll have to be careful where I cast my name then?

Stuart.
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Old 09-10-17, 04:02 PM   #7
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I admire your determination Steve, and am looking forward to the finished article That is certainly a challenge !

Good use of kitchen table by the way. I look forward to seeing what happens when I try that
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Old 09-10-17, 04:24 PM   #8
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Bit of advice needed please, I'm not sure the best way to measure for new cups... my callipers don't quite reach into the bore of the pump and I can't find my internal ones.... probably over Pap's still...

The washer in-between the cup washers is 1.200" so am assuming the bore is 1 1/4" as the washers is slightly loose inside, the cup washers are just under 1 1/4" but I assume they have shrunk.

This pump is a A3E13 so slightly smaller than the A4 which I think is 1 1/2".

Also does anyone know where I can get a 1" BSP gland nut?
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Old 09-10-17, 05:13 PM   #9
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Quote:
Originally Posted by skankin_giant View Post

Silly me I had a choice of two, one ready to go from Adam or one which was half the price..... you would have thought I would have learned by now.....
Seems not
I have bought and scrapped a couple of pumps now, along with bought and sold on without ever pumping water a couple more. This summer I bought an Argosy on a whim which did at least pump water, but has now cost be a full set of valves, gaskets a pulley and a cup washer. But like you I don't learn, I then bought two as a job lot, one will never work again without serious machining time, the other was a temperamental nightmare and has been moved on. The I bought a brand new water pump, painted it green and now just place in position, nail it down and throw a belt on it, everytime it just shift lots of water and consumes 2 to 3hp depending on speed I drive it at.
Is it vintage, nope, does any of the public notice (or care) nope, it just works leaving me to play with more important things, and as a bonus it can be run of off any of my engines without worrying about overspending it.

Neil.
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Old 10-10-17, 08:29 AM   #10
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Going to pop over Amos today see what they have left.
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