Farm Equipment - Snap coupler disk

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Snap coupler disk

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=156907
Printed Date: 14 Dec 2025 at 4:46pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Snap coupler disk

Posted By: Rip
Subject: Snap coupler disk
Date Posted: 03 Jan 2019 at 9:36am

How do you adjust a model 20 snap coupler disk

Replies:

Posted By: Brian F(IL)
Date Posted: 03 Jan 2019 at 12:47pm

My recollection is the only adjustment is a fore/aft pitch adjustment via a handle & screw at the rear of the tongue that fits into the snap-coupler bell.

Posted By: Rip
Date Posted: 03 Jan 2019 at 1:17pm

Thanks Brian mine is rusted tight and some parts missing

Posted By: Brian F(IL)
Date Posted: 03 Jan 2019 at 1:36pm

Here is a picture of my snap-coupler #109 disc with the beaming screw. I believe a #20 disc is similar in structure but doesn't have the beaming screw. It only has the adjustment at the back of the tongue (if I recall correctly).

Posted By: ac45dave
Date Posted: 06 Jan 2019 at 7:53pm

Brian F(IL) wrote:

My recollection is the only adjustment is a fore/aft pitch adjustment via a handle & screw at the rear of the tongue that fits into the snap-coupler bell.

rear gangs are adjustable for cut angle also.rear outer corner bolts are loosened and remove the other three on each gang to move adjustment.three positions according to the owners manual.front gangs are fixed,no adjustment.this is if you have a 20 series model.40 series have adjustments for front and rear gangs along with beaming adjustment.

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54 wd-45gas ; 56 wd-45d N/F w/fact p/s ; 63 d-17 sIII N/F gas ; 60 D14 N/F ; 67 d-17 sIV N/F gas ; 63D15 sII W/F; 39rc#667 ; 2021 massey 4710 fwa ; gravely 2 wheel tractors

Posted By: john(MI)
Date Posted: 06 Jan 2019 at 8:00pm

I've always been of the believe that old farm implements, disks, plows, cultivators, etc. are probably adjusted to their optimal performance by the last user before they were abandoned, and should not be adjusted.

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D14, D17, 5020, 612H, CASE 446

Posted By: Rip
Date Posted: 06 Jan 2019 at 8:47pm

My problem is how does it works mine all rusted up

Posted By: dawntreader74
Date Posted: 06 Jan 2019 at 9:05pm

you haft to take the adjuster off an free it up; clean an oil it to get it working an put it back together' then you can adjuster your tool the wright way..

Posted By: ac hunter
Date Posted: 09 Jan 2019 at 8:26am

Some heat from an acetylene torch can do wonders for rust. Get it apart, clean the rust out of both parts and then apply some never-seize.

Posted By: Rip
Date Posted: 09 Jan 2019 at 11:50am

ac hunter wrote:

Some heat from an acetylene torch can do wonders for rust. Get it apart, clean the rust out of both parts and then apply some never-seize.

Posted By: Rip
Date Posted: 09 Jan 2019 at 11:58am

Have it apart all the threads on the shaft are worn down smooth going to replace it with 3/4 all thread course cause the top is fine thread and the bottom is course

Posted By: Steve A
Date Posted: 11 Jan 2019 at 10:54am

Had the same situation with mine. Prior owner pulled it with a D14, I'm using WD/WD 45's. First season back gang fine, front not doing much. Soaked it with ATF/PB blaster for a few months, put 5 ft pipe on handle--take it off or break it off point--,then got lucky and it moved. Now just fine.