D17 Series IV
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=139237
Printed Date: 30 Dec 2025 at 9:22pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D17 Series IV
Posted By: Hockeygoon
Subject: D17 Series IV
Date Posted: 09 Jun 2017 at 9:05am
| The governor on my D17 Series IV gas is not working. The engine is over revving a LOT - I am guessing it is running about 2800 to 3000 RPM full throttle. I have been informed this means the weights are probably broken on the governor - will weights and drive gear(?) work from a WD45? It has been running like this for a while - before we bought it my BIL was using the tractor primarily on a grinder mixer - with the PTO running at 30%-40% over 540 it was probably making that a short chore.......... |
Replies:
Posted By: DrAllis
Date Posted: 09 Jun 2017 at 9:38am
| Until you check the governor link rod length, you are speculating on the governor weights being the problem. You were given directions how to do this on Yesterdays Tractor. Did you do this or not????????? |
Posted By: thendrix
Date Posted: 09 Jun 2017 at 8:12pm
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If it's been over revving for "a while" I doubt the governor weights or whatever is your only issue. ------------- "Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan |
Posted By: Hockeygoon
Date Posted: 10 Jun 2017 at 6:03am
| Actually the "directions" were that the rod length being out of adjustment might give an extra 100 RPM - I am dealing with a lot more than 100 RPM. Then you said it must be the governor weights to gain that many RPM - hence the question about what weights might fit. If you don't know its perfectly fine not to post. |
Posted By: DrAllis
Date Posted: 10 Jun 2017 at 6:33am
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Checking the rod length is the FIRST thing to do. You're the one with the problem and you've been given advice what to do first, and I don't think you've bothered to do it. The governor parts from a WD-45 interchange but you should always try and stay with the original governor housing due to gear backlash concerns. |
Posted By: CTuckerNWIL
Date Posted: 10 Jun 2017 at 11:00am
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Will the engine idle down? If so let it run at an idle, then reach up behind the carb and try to open the throttle by turning the throttle shaft. If something pushes back, resisting an open throttle, the governor is working and just needs set properly. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: WF owner
Date Posted: 10 Jun 2017 at 12:32pm
| Don't ever argue with DrAllis (and several others on here). He has forgot more about AC tractors than most of us will ever know. |
Posted By: Hockeygoon
Date Posted: 11 Jun 2017 at 2:12pm
The governor does work at lower or higher RPM. With PTO speed at 500 RPM it will pull down to under 400 RPM under heavy load and peg out over 600 RPM on the end rows. |
CTuckerNWIL wrote:Posted By: Kenny L.
Date Posted: 11 Jun 2017 at 4:14pm
| Did you look in the service book? What one of the first thing to do check that first and the DR. can hear one the next farm over and tell you what is wrong or right with the tractor. |
Posted By: JoeO(CMO)
Date Posted: 12 Jun 2017 at 6:40am
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The Dr has thrown you a lifeline to get you out of that swamp! Those Alligators are getting close, don't throw the lifeline back. I had a D15 that someone routed the generator wires over the governor rod causing a similar symptom you are describing. I cannot emphasize- don't throw the lifeline back. The Dr. spends countless hours helping people on this site and others with problems. If a person states a problem, be willing to go through a systematic trouble shooting process. You are his eyes, do the steps before the alligators bite you! ------------- |
Posted By: Ted J
Date Posted: 13 Jun 2017 at 8:22am
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The GOOD Dr. has spoken,,,,,,,,you'd better listen. He has forgotten more about these tractors than you will probably ever learn. And NOT just yours, he KNOWS THEM ALL. LISTEN!! ------------- "Allis-Express" 19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
Posted By: Brian Jasper co. Ia
Date Posted: 13 Jun 2017 at 9:41am
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Plus one more on Dr. A being good. I've talked to him in person and you can be very sure he knows what he's talking about. ------------- "Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford |
Posted By: Hockeygoon
Date Posted: 03 Jul 2017 at 10:25am
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I saw an error in my last post - the governor does NOT work at lower RPMs. Resetting the throttle rod did nothing to correct the issue, engine speed was varying all the time and continued to have over revving issues along with no governor as any throttle setting. I ordered new weights and after they arrived I pulled the governor. Upon inspection the weights were intact, free moving and did not appear to have excessive wear - but to be honest I have no idea what "excessive" would look like on this tractor. I went through all the linkages and replaced one worn throttle rod but nothing between the governor and the carb appeared to be too worn or sticking. Since I had them I went ahead and installed the new pins and weights and reassembled. To my surprise the governor was working perfectly. I reset the throttle rod length for correct max RPM (completely out of adjustment after setting it with the governor not working). Reset the idle and the tractor is running as well as one could hope for a D17 gas with 9000+ hours. I ran it on a 276 baler for 4 hours Sunday. No issues with over revving and governor response under load was as it should be. I talked to my BIL who had been running this tractor with my FIL before I bought it and he said he had run it wide open on their grinder mixer for several hours a week and to his knowledge the governor hadn't worked in years (8 or 9) and neither had the tach. When I told him what kind of RPMs they had been running his only response was that didn't surprise him - that tractor could grind feed twice as fast as their other tractors..... How they had gotten away with running it that way I have no idea
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