AC5040 Injector Pump
Printed From: Unofficial Allis
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=173291
Printed Date: 19 Oct 2025 at 1:39pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: AC5040 Injector Pump
Posted By: scratch67
Subject: AC5040 Injector Pump
Date Posted: 03 Aug 2020 at 7:48am
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Mine is leaking from the bottom, not sure where from yet. Been researching rebuilding the pump. Almost all the time I would do things like this myself. But... From what I have learned, maybe not. I saw the rebuild kit, nothing that details where each o-ring goes! I’m good at reverse engineering, but this? Options: 1. Buy new pump 2. Send out for rebuild 3. Send tractor to tractor repair shop. 4. Buy new tractor. 5. Rebuild myself. I know this is going to be expensive.  What would you recommend? I live in west Georgia, anyone local for some consultation or maybe assistance with this?
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Replies:
Posted By: AC720Man
Date Posted: 03 Aug 2020 at 8:50am
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Send it to Ed, he is very good at his job of rebuilding pumps. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: scratch67
Date Posted: 03 Aug 2020 at 9:17am
| thanks, Ed’s contact info? |
Posted By: injpumpEd
Date Posted: 03 Aug 2020 at 10:23am
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pm if want my info ------------- 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: scratch67
Date Posted: 24 Aug 2020 at 3:28pm
| Turns out it was the o-rings on the throttle post. Replaced them. Did the o-rings on the shut off post too. |