Farm Equipment - 45 diesel fuel leak into oil pan

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45 diesel fuel leak into oil pan

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=145057
Printed Date: 29 May 2025 at 7:27am
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Topic: 45 diesel fuel leak into oil pan

Posted By: Allan Drone
Subject: 45 diesel fuel leak into oil pan
Date Posted: 03 Dec 2017 at 7:25pm

My father in law has a 45 diesel that we have been fighting for a little while. Diesel fuel keeps leaking into the oil pan. Have resealed a few things but kinda scratching our heads. Any suggestions would be greatly appreciated.

Replies:

Posted By: Don(MO)
Date Posted: 03 Dec 2017 at 7:39pm

Two things to look at are the lift pump shaft seal ( the lift pump in the lower left side of the injection pump), or the O-ring below the injection pump head.

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3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep.

Posted By: TomMN
Date Posted: 03 Dec 2017 at 9:29pm

I took some pictures of the O-ring Don mentioned. When you take the cover off for this area there should only be motor oil in there. If there is diesel fuel then this is where you have a leak, so this one is real easy to check. Here is a link to my pictures: http://allis01.com/fossto/56WD45D/ac-wd45d-PSB.html" rel="nofollow - http://allis01.com/fossto/56WD45D/ac-wd45d-PSB.html

Here are some more pictures of the injection pump:

http://allis01.com/fossto/56WD45D/ac-wd45d-injection.html" rel="nofollow - http://allis01.com/fossto/56WD45D/ac-wd45d-injection.html

Posted By: injpumpEd
Date Posted: 04 Dec 2017 at 7:06am

control unit oring is a good source of fuel in the oil too.

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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!