Tightening axle on snap coupler disc gang
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=160473
Printed Date: 15 Apr 2026 at 8:04am
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Topic: Tightening axle on snap coupler disc gang
Posted By: cbuttre835
Subject: Tightening axle on snap coupler disc gang
Date Posted: 28 Apr 2019 at 9:00pm
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I've got what I think is a snap coupler model 40 disc, a heavy 8 footer with cast pivots for the angle adjustment. One gang has had the 1 5/8" square nut welded to the shaft and the disc blades aren't tight on the axle shaft spacers. They all free spin and it doesn't seem to cut as well as the other 3. Is there a spec on how to tighten this? Can the bearings be over-tightened by torquing this down? I can't find a series 40 manual on agcopubs... would the series 20 and 100 manual be similar enough? ------------- C w/ 3rd gear out D15 II factory 3 point WD (no motor!)(parts for sale!) WD 45 wide front |
Replies:
Posted By: DrAllis
Date Posted: 28 Apr 2019 at 9:17pm
| If it is like any other disc I've been around, you will never be able to overtighten it. In other words they need to be T-I-G-H-T !! and Dad always had to borrow the wrenches from the local A-C dealer when I was a kid to do it. |
Posted By: cbuttre835
Date Posted: 28 Apr 2019 at 9:50pm
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Thanks. I did a little more reading on here and found out those aren't tapered roller bearings like on a front wheel spindle. A 1-5/8 railroad socket is expennnnnsive, But being able to use the big impact wrench on it will be priceless... ------------- C w/ 3rd gear out D15 II factory 3 point WD (no motor!)(parts for sale!) WD 45 wide front |
Posted By: DiyDave
Date Posted: 29 Apr 2019 at 4:50am
What causes the looseness is the spacers get worn, and then the nut bottoms out on the ends of the threads of the axle. Shoup sells an end washer that can take up some of the slack, but sometimes, even that ain't enough. You may have to fabricate some washers to insert between the worn spacers, and the disc blades... ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: truckerfarmer
Date Posted: 29 Apr 2019 at 6:54am
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Not being familiar with this disc, I have a question. Are the axle shafts round? He says that the disc blades spin freely. Admittedly the only disc I have had apart is my McCormick #37, and it has a square shaft with square holes in the blades, thus the blades won't turn independent of each other. I'm wondering if he has more issues than just a loose but? ------------- Looking at the past to see the future. '53 WD, '53 WD45, WD snap coupler field cultivator, #53 plow,'53 HD5B dozer Duct tape.... Can't fix stupidity. But will muffle the sound of it! |
Posted By: Allis dave
Date Posted: 29 Apr 2019 at 8:55am
| These have round shafts. It's hard to overtighten these but it's possible. I've seen the threads stripped out before with a big 1" impact. I don't think you'll ever do that with a wrench. |