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piston pump 3933254 low pressure?

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Old 08-19-2012, 03:11 PM
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piston pump 3933254 low pressure?

I bought this pump used, it is from a 4bt with an A pump. I took it apart and it has the bushing/small piston and the conical spring. You think it would be OK to run? I know it is not one of the common low pressure pump part #s, but seeing as how it has the right parts inside, what do you think?
Old 08-19-2012, 04:41 PM
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Feel like taking apart the one in your 84 d150? If it's the correct pump, you could compare each pumps springs.
Old 08-20-2012, 12:00 PM
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Bill, I had to rob the one from the 84 to put on the work truck, as its diaphram pump finally bit the dust. I picked up this used one hoping to go to the dragstrip again this year.
Old 08-20-2012, 02:31 PM
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I did a bunch of pump research here:

https://www.dieseltruckresource.com/...d.php?t=183104
Old 08-20-2012, 05:06 PM
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Originally Posted by kiszka6911
I did a bunch of pump research here:

https://www.dieseltruckresource.com/...d.php?t=183104
You never did report back with output pressures..
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