Vicious Acceleration
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=17924
Printed Date: 06 Feb 2025 at 10:37am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Vicious Acceleration
Posted By: AllisChalmers37
Subject: Vicious Acceleration
Date Posted: 08 Sep 2010 at 3:38pm
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My WC has been acting as any old tractor should until a few days ago. The problem is that after I start it, without touching the throttle lever that is at the slowest setting, the tractor will start to accelerate all by it's self until it is at full throttle. The lever does not move while it is doing this. the only way to slow it back down is to pull the lever back past the notches where it will slow down and idle normally. It's to the point now that I drove up the road with the throttle wide open in only the second notch.
Any Ideas?
Jeremy ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |
Replies:
Posted By: BennyLumpkin
Date Posted: 08 Sep 2010 at 4:02pm
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sounds like something in the governor came apart. ------------- Central PA Allis Express 1934 WC254 1945 WF 1945 WC135755 1951 WD68085 1953 WD45-150217 1957 WD45D-230744D B110 |
Posted By: mlpankey
Date Posted: 08 Sep 2010 at 4:31pm
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I second that . ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: AllisChalmers37
Date Posted: 08 Sep 2010 at 5:23pm
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OK So will this hurt the tractor? I want to get this fixed but I have no idea how to do this or what it might cost. The tractor should still be good to go to some shows like this, I hope. ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |
Posted By: BennyLumpkin
Date Posted: 08 Sep 2010 at 5:25pm
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first thing I'd do is take the plate off the front of the distributor housing toward the radiator...your governor is in there....see if anything falls out, or is loose.....most likely a weight or spring....Im sure someone will chime in that has more experience than I. ------------- Central PA Allis Express 1934 WC254 1945 WF 1945 WC135755 1951 WD68085 1953 WD45-150217 1957 WD45D-230744D B110 |
Posted By: GregLawlerMinn
Date Posted: 09 Sep 2010 at 7:53am
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If the govener weight falls off, it could break some teeth off the govener drive gear and/or cam gear...and get pieces of metal into the crank case. Pull the radiator and cover as discribed by Benny. A new distributer drive assembly (from Sandy Lake Implement) for my CA cost approx $150 a few years back; you may find previously used parts cheaper by advertising here or at your local tractor salvage yard. ------------- What this country needs is more unemployed politicians-and lawyers. Currently have: 1 D14 and a D15S2. With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC |
Posted By: AllisChalmers37
Date Posted: 09 Sep 2010 at 6:31pm
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I guess a magneto would have a different drive than a distributer. ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |
Posted By: TomMN
Date Posted: 09 Sep 2010 at 7:26pm
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Here is a link to the pictures I took of the governor on my WC, it shows what you should find in there. I agree with what has been said above you probably have broken governor weights. You'll have to hope the chunks don't get wedged in the timing gears. I found pieces of weights in the crankcase of mine when I first took it apart, and a good size piece of one behind the cam shaft gear. http://home.comcast.net/%7Eold_allis/ac-wc-gov.html - http://home.comcast.net/~old_allis/ac-wc-gov.html |
Posted By: AllisChalmers37
Date Posted: 09 Sep 2010 at 8:24pm
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OH GOOD LORD!! That looks a little scary.
Hope I could figure it out. ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |
Posted By: Jamie (KY)
Date Posted: 09 Sep 2010 at 8:27pm
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Tom, those pics are awesome! I always wondered how all that worked. ------------- Just when I thought I was finishing my "honey-do-list", she turned the page!!! |
Posted By: BennyLumpkin
Date Posted: 09 Sep 2010 at 8:44pm
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outstanding pics! ------------- Central PA Allis Express 1934 WC254 1945 WF 1945 WC135755 1951 WD68085 1953 WD45-150217 1957 WD45D-230744D B110 |
Posted By: AllisChalmers37
Date Posted: 10 Sep 2010 at 2:54pm
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I have a question for you guys. I know the WC only has a top speed of 9.5 MPH which is too slow for most tractor drives. What would I need to do to the governor to let it go a little bit faster? ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |
Posted By: CJohnS MI
Date Posted: 10 Sep 2010 at 3:47pm
I think you already done it. |
AllisChalmers37 wrote:Posted By: CJohnS MI
Date Posted: 10 Sep 2010 at 5:56pm
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AC37, here's what DrAllis has posted before on the governor & I saved for posterity. Remember that spring AND weights combined make the difference. Dr. Allis says: I'm going to try and make this simple and to the point. Engine off....throttle wide open....adjust (bend) the vertical governor arm such that the carb link rod just slides into the arm hole or be even 1/16" too short. DO NOT EVER DEVIATE FROM THIS SETTING!!! (1/16" short will not affect the HP output). This is making the governor as "quickly" acting as it can ever be while still allowing for full open at the carb. If you need more (or less) rpms change the spring/plunger inside the governor OR add an external spring like I said earlier to the governer vertical arm, remembering to make the extra spring as long as you can and keeping it down low (1 to 2 inches max from the bottom) on the arm. Some of the 201/226 engines have a high idle rpm stop screw/bolt on the top of the governor front cover to be able to adjust rpm's some, but not 200rpm at a time. Governor springs as I know of .. WC-1600 rpm tops WD/WD45-1700 rpm 170/175-1800 rpm (only with WC/WD/WD45/D17 governor weights!!!) D17-2000 rpm D17 spring with 170/175 weights-2200 rpm These rpms numbers are close and will vary a little bit with the carb you are using and even cubic inches and camshaft style, but they are accurate in the results you will get from slowest to fastest. There are possibly a couple of other springs for other applications listed in the parts books. There are THREE different 201/226 governor weights.... - Gleaner E/E3 combine is p/n 70236562 (I have two pair in my hands as I write this) - 170/175 weight (which I have no p/n) - WC-WD-WD45-D17 weights (which I also do not have a p/n for. Different strength springs control the maximum speed and to a small degree droop. If you had these three DIFFERENT weights in your hands you would see the difference in the design of the fulcrum on each one. I've just been on AGCO's website for parts books and here's what I found.... WC-WD-WD45-D17 governor weight is p/n 70229980 with a 70229519 gov spring/plunger... 170-175 governor weights are 70248572 with a 70226785 gov spring/plunger and finally E-E3 Gleaner weights are 70236562 and the spring (without a plunger) is 70236564. I've always used E-E3 weights on my pulling engines. They have the least amount of droop by design of the fulcrum......combines need to run a steady speed for the seperator to work properly. If you're happy with your setup, stick with it. WD45 springs will get you 1700 rpm tops and D17 springs will get you 2000 rpm tops.....I don't know what the paint stripe code is/was. If you start lengthening the carb link rod, you will deaden the governor !!!!!(now the droop will be 400 rpm) that length is critical to governor quickness. Hanging an extra spring on the block drain to vertical arm is a way to increase rpms and still have things work correctly....just use a long spring and keep hooked low on the gov arm...maybe an inch to two from the bottom. The 200 rpm "droop" on 170-175 models (2000 down to 1800 full load) is due to the design of the governor weight itself, not the governor spring. Governor weights are the same for WC-WD-WD45-D17( and have a 300 rpm droop). The 170-175 are different(and are a 200 rpm droop). The E and EIII Gleaner are also different and are 150 rpm droop approximately. |
Posted By: CTuckerNWIL
Date Posted: 10 Sep 2010 at 8:10pm
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After all that good info, I would advise not to try and make your tractor run faster than it is supposed to unless you KNOW there is no ridge in the cylinders. If you want the tractor to go down the road a little faster, put taller tires on it.
------------- 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: AllisChalmers37
Date Posted: 10 Sep 2010 at 8:14pm
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Yeah, I see where that can be risky ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |
Posted By: TomMN
Date Posted: 10 Sep 2010 at 8:16pm
| Another option to make it go faster is find a Sherman step up transmission. I don't know how much faster it goes but I think it would get you to caravan speeds. Mine goes fast enough with 13.6 X 28 rear tires. |
Posted By: AllisChalmers37
Date Posted: 10 Sep 2010 at 8:20pm
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I've never seen a Sherman on an Unstyled WC. Aren't those like needle in haystack rare. ------------- 1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500 |