Vacuum pump oil leak - Diesel Bombers



1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

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Old 09-02-2013, 10:11 PM
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Default Vacuum pump oil leak

I'm trying to find a seal kit for my vaccum pump because there is an oil leak coming from around the vaccum and ps pump. But I can only find a seal kit for 91.5 and up. Will that work on my 1990 or no. If not does anyone know where I can find one that will work?

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Just looked at it a bit more and it seems to be leaking from the thing below the vacuum pump. I'm not sure what its called but its that round thing below it that says outlet. When I started the truck it kind of shot oil out of the little round cap right on the bottom. Not to sure what to think now?

Last edited by Zach81smith; 09-02-2013 at 10:11 PM. Reason: Automerged Doublepost
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Old 09-03-2013, 08:06 PM
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Try Geno's garage or fixinrams.com
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Old 09-04-2013, 10:52 AM
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I got mine from Gould Gear and Electric (GOULD GEAR & ELECTRIC INC.). The kit plus the vane set was $93 in 2011. Seal kit p/n GG01 9195 3. Vane set p/n GG10/FV.
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Old 09-04-2013, 02:29 PM
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Will that seal kit work on a non I/c kit?

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Non I/c truck *

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Old 09-04-2013, 05:23 PM
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No, the NIs use diaphragm pumps instead of a vain pump.
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Old 09-04-2013, 06:38 PM
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So I'm stuck then cuz I can't find any rebuild kits for the diaphragm vaccum pump. Any suggestions on what I should do?
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Old 09-05-2013, 10:20 AM
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Shouldn't be hard to find seals and o-rings. You will just need to take it apart and measure it. If you need a quick turnaround, check the bone yards. You should be able to find 1.
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Old 09-05-2013, 12:00 PM
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I'm gonna take it apart this weekend. Thanks for the help once again man.
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