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WD45 diesel- fuel in the oil

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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=57301
Printed Date: 06 Sep 2025 at 5:20am
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Topic: WD45 diesel- fuel in the oil
Posted By: thatch14
Subject: WD45 diesel- fuel in the oil
Date Posted: 23 Sep 2012 at 10:28am
My brother has a WD45 diesel that he just noticed has fuel in the oil. He had 2 of the injectors worked on when he first got it. Would that have something to do with the other injectors? We farm about 66 acres and I was getting all pumped up about plowing wheat stubbles with it this year. I'd appreciate any advice. Thanks



Replies:
Posted By: TedBuiskerN.IL.
Date Posted: 23 Sep 2012 at 10:47am
There is a bad seal in the injector pump that allows fuel to get to the oil.

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Most problems can be solved with the proper application of high explosives.


Posted By: thatch14
Date Posted: 23 Sep 2012 at 10:54am
Is that an easy fix?


Posted By: injpumpEd
Date Posted: 23 Sep 2012 at 11:37am
usually a seal on the transfer pump shaft, and a groove worn in the shaft from an old hard seal. You can repair the PSB transfer pump fairly easily. Just finding parts if yours needs the shaft. We've had to send the shafts out to be built back up before. Not very expensive, but a little bit of a wait. 

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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!


Posted By: Richard
Date Posted: 23 Sep 2012 at 6:19pm
I had that happen several years ago and the fix was replace both seals on the shaft - one seal cost 90 cents and the other cost 92 cents.  This was back in the late 70's.  Both seals looked alike but each had a specific place, one for oil and the other for fuel.  I remember taking a picture with a camera and you'll want to at least take a mental picture before you remove the shaft, in other words know exactly how it's going to be going back together.  Good luck.  


Posted By: Richard
Date Posted: 23 Sep 2012 at 6:20pm
One other note - I remember talking to a fellow that said he replaced both seals on the shaft on an annual basis just so he wouldn't have any trouble.  



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