Help with a D-21
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=196295
Printed Date: 12 Nov 2025 at 6:11am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Help with a D-21
Posted By: Wendell,W.N.H.
Subject: Help with a D-21
Date Posted: 24 Jul 2023 at 9:06am
|
I have a 1966 D-21 with a non- turbo engine. Has been running fine, but now will run for a few seconds then quit. I replaced the inline filter under tank (twice) and spin on is new. I pulled off the spin imediately after it quit one time and it was full of fuel. I checked power to the shut off on pump and it is getting power while key is on. Air filter is new. It will start right back up after it quits. Does this mean my problem is with the injection pump? The pump is a Stanadyne, DCGFC629-2AG. Thanks for any help
|
Replies:
Posted By: injpumpEd
Date Posted: 24 Jul 2023 at 11:24am
flex ring inside pump is breaking down and the pieces are plugging the return fitting in top cover of inj pump. You can take the fitting out, remove the ball and it should run, this is a temporary bandaid. It will need serviced soon. You can verify this by loosening the bolt on side of pump with 1/2" wrench, and let the fuel leak out the side. It stays running it confirms the return is plugged making it lose power and dying.
-------------
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: SteveM C/IL
Date Posted: 24 Jul 2023 at 11:38am
|
...it will not get better,only worse. Time to start getting educated on steps for pump removal/installation. The rebuild should last longer than you.
|
Posted By: den/southern illinoi
Date Posted: 24 Jul 2023 at 4:11pm
And one of those that answered your question (injpumpEd) is who can rebuild it for you Den
-------------
Own 4 wheel 20, 2-5015, 5020 and associated equipment and 2 electric forklifts.
|
Posted By: Tim NH
Date Posted: 24 Jul 2023 at 5:57pm
Hi Wendell, Den is right you want Ed to do it. He's done two of my tractors, and injectors. He will talk you thru removal. and installation. Tim
-------------
1950 WD 1959 D14 1955 WD45 1976 7000 B 207
|
Posted By: sparky
Date Posted: 24 Jul 2023 at 6:00pm
Yep,Ed gets my vote also.
-------------
It's the color tractor my grandpa had!
|
Posted By: AC720Man
Date Posted: 24 Jul 2023 at 9:48pm
I have nothing but good things to say about Ed’s work. Right man for the rebuild for sure.
-------------
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
|
|