Injection pump maybe???
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=151158
Printed Date: 15 Nov 2024 at 6:15pm
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Topic: Injection pump maybe???
Posted By: clarkscreek
Subject: Injection pump maybe???
Date Posted: 09 Jun 2018 at 9:26pm
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I have a jd 4050 I know wrong color but it has a roosamaster pump. Anyway the problem is the governor doesn't seem to respond as quick as it should. It goes to far below and above set rpms without responding. The real noticable thing is when you go down hill it holds back good and then just starts to climb in rpms, like it loses its hold back. Engine has plenty of power, very little blowby, no oil consumption to speak of and starts excellent down to 0 farenheit. It actually starts way better than it should in cold weather. I'm not complaining but never had a Deere that starts this good. Is it likely internal pump issue or a timing thing. Thanks just looking for some advice before I dig in.
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Replies:
Posted By: shameless dude
Date Posted: 10 Jun 2018 at 12:01am
Posted By: bigal121892
Date Posted: 10 Jun 2018 at 5:07pm
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The 4050, is a great tractor, I sure wouldn't trade it off for a simple problem. Yes, the injector pump needs to be rebuilt. I can't remember the exact cause, but something is getting hung up in the pump, not allowing it to respond properly.
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Posted By: clarkscreek
Date Posted: 10 Jun 2018 at 6:25pm
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I'm not trading it, I've owned it for two years and it's always done it I kind of had the feeling something was wrong but didn't have another one to compare to. I finally drove a different one and could tell mine wasn't right.
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Posted By: injpumpEd
Date Posted: 11 Jun 2018 at 7:35am
I've seen a few DM pumps have the weight retainer ring slip, so then the governing gets very sporadic. Minor changes, it works ok, big changes, it just slips and doesn't control anything. Pump issue for sure!
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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!
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Posted By: clarkscreek
Date Posted: 11 Jun 2018 at 7:39am
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Thanks for the replies I knew I could count on you guys. How much to fix the pump, rough estimate.
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