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

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  #1  
Old 09-02-2013, 09:11 PM
Zach81smith's Avatar
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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?

Zach81smith's Sig:1990 cummins w250. 4x4. automatic 3 speed. Straight pipe to a 5" peterbilt stack exiting in front of rear tire. fuel pin turned. High idle backed out. throttle linkage relocated to inside hole. Timing advanced 1/8th of an inch. 1 ton conversion on rear suspension. Got my z gauges( pyro and boost) . Camo headliner yee. Needing upgrades

Last edited by Zach81smith; 09-02-2013 at 09:11 PM.. Reason: Automerged Doublepost
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  #2  
Old 09-03-2013, 07:06 PM
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Try Geno's garage or fixinrams.com

tiremann9669's Sig: 96 12 valve Club Cab 4X4, K&N Intake,4'' Straight Pipe, 285/75R16 Bridgestone Revo's,on 16X8 American Racing Black steelies, Firestone ride rite airbags Future Bombs Guages, Aftermarket lift pump, Fuel plate, Injectors,etc,etc,etc Oh Yea I'm sure a clutch will come into the picture sometime too
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  #3  
Old 09-04-2013, 09:52 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.

cougar's Sig:1992 W250 auto
RIP 1991.5 W250 5 speed 1991.5-2013 fair well old friend
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  #4  
Old 09-04-2013, 01:29 PM
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Will that seal kit work on a non I/c kit?

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Non I/c truck *

Last edited by Zach81smith; 09-04-2013 at 01:29 PM.. Reason: Automerged Doublepost
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  #5  
Old 09-04-2013, 04:23 PM
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No, the NIs use diaphragm pumps instead of a vain pump.
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  #6  
Old 09-04-2013, 05:38 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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  #7  
Old 09-05-2013, 09:20 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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  #8  
Old 09-05-2013, 11:00 AM
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I'm gonna take it apart this weekend. Thanks for the help once again man.
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