1957 AC D17 with Offset Rotary Cutter
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=174652
Printed Date: 29 Aug 2025 at 3:25pm
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Topic: 1957 AC D17 with Offset Rotary Cutter
Posted By: RiverMountainFarm
Subject: 1957 AC D17 with Offset Rotary Cutter
Date Posted: 24 Sep 2020 at 8:59am
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I recently purchased a new 3 point kit for my D17 and have started running a Landpride offset rotary cutter (worked with dealer to make sure it would work with the D17 before I bought it). I was cutting some long grass and needed to raise the cutter and noticed that the PTO shaft rubs the cross bar. The geometry of the lift arms also seems off, no matter how straight I drive or how flat the ground is. Here are pictures of it parked in the barn. Any advice? Should I just remove the cross brace? Or remove the snap couplers and attach directly to the lift arms? I'm worried I'm putting too much stress on an old tractor.   ------------- 1957 Allis Chalmers D17 | 1954 Allis Chalmers WD45 |
Replies:
Posted By: BillinAlberta
Date Posted: 24 Sep 2020 at 9:11am
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I have a drum mower that I run with the same setup. The weight offset like that is hard on the left arm and it never lifts straight up. I ended up fabricobbling a new left lift arm and that helped but the "A" arm is now worn out and needs rebuilding before next year. The tractor handles it fine.
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Posted By: RiverMountainFarm
Date Posted: 24 Sep 2020 at 9:15am
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Does your PTO shaft rub on the hitch when you lift? Or is that just because it's an offset mower? ------------- 1957 Allis Chalmers D17 | 1954 Allis Chalmers WD45 |
Posted By: Joe(TX)
Date Posted: 24 Sep 2020 at 10:08am
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Have you tried removing the cross bar? It's really not doing anything at this point. I noticed you don't have any sway chains also. ------------- 1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A |
Posted By: RiverMountainFarm
Date Posted: 24 Sep 2020 at 11:35am
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The sway chains are not installed in the picture but I do have them. If the crossbar doesn't serve a purpose, it would be easy to remove! ------------- 1957 Allis Chalmers D17 | 1954 Allis Chalmers WD45 |
Posted By: DrAllis
Date Posted: 24 Sep 2020 at 12:06pm
| You have 3 choices: Don't raise the mower...….remove the crossbar...…..buy a different 3-pt hitch. |
Posted By: RiverMountainFarm
Date Posted: 24 Sep 2020 at 1:04pm
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Options 1 and 3 aren't really feasible (I mean, I could buy a different 3 point, but I *just* dropped $500 on it). I was hoping removing the cross bar would be an option without many drawbacks when I posted. Sounds like it is based on a couple of comments here... Thx!
------------- 1957 Allis Chalmers D17 | 1954 Allis Chalmers WD45 |
Posted By: Reindeer
Date Posted: 24 Sep 2020 at 1:09pm
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When the power lift arms are pinned to the mower they don't need the cross bar to brace them. The mower 3 point keeps them in position. Should be able to remove the cross bar without consequences. You might want to use the away chains as the load is uneven on the hitch? Just a thought. ------------- |
Posted By: BillinAlberta
Date Posted: 24 Sep 2020 at 2:07pm
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I bolted the crossbar underneath the lower mount with longer bolts then promptly broke the bolts. So I chucked the damn thing under the bench and ran without(the crossbar). The worst part of the whole thing is the lift arms. The left one is trying to hold the entire load when lifted and it folds up under the strain.
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Posted By: PaulB
Date Posted: 24 Sep 2020 at 2:13pm
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Another example of why 3pt equipment doesn't match with older AC (Snap-Coupler) tractors. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: allisbred
Date Posted: 24 Sep 2020 at 2:55pm
| Not sure what you have for a rotary cutter, if weight hangs out the right, it will push to the left when lifting. Anything offset lifting on a tractor set up with 3pt does this. If it’s what you need, sometimes you have to deal with it. The more play in the arms will allow more shift of weight transfer and off sets the load on the arms. |
Posted By: allisbred
Date Posted: 24 Sep 2020 at 3:22pm
| We had an adapter that was rigid made by AC for our semi mount plow. The geometry was a little better (used the snap coupler) than what you have as it was made a little wider. Still was only an adapter and that’s what you would get. |
Posted By: AaronSEIA
Date Posted: 25 Sep 2020 at 5:47am
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That's why I have the adapter that bolts to the drawbar. Nothing is in the way of a PTO shaft. AaronSEIA
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Posted By: Brian G. NY
Date Posted: 28 Sep 2020 at 9:57am
How much lateral movement of your 3 PH with the sway chains installed? Seems to me most chain systems allow too much movement.
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RiverMountainFarm wrote:Posted By: Brian G. NY
Date Posted: 28 Sep 2020 at 10:08am
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The P.O. of my D-17 (Series II) built his own 3PH. There are a few things on it I don't care for but I do like his anti sway system. With this one, I can actually set the 3 PH arms to the right or left some if necessary and there is practically no lateral movement at all. Depending on your situation, it may not be practical to attempt to fabricate something like this for your tractor. Those adjustable links are available at Tractor Supply.  |