WD crankshaft parts
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=205077
Printed Date: 28 Jul 2025 at 9:43am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD crankshaft parts
Posted By: SteveRogers
Subject: WD crankshaft parts
Date Posted: 23 Jan 2025 at 3:12pm
| The crankshaft pulley does not appear to be broken in any way. But there is another part that goes over the top of the pulley and has 4 set screws that attach it to the pulley. What is this part for and how do I know what the tolerances should be or how should it be adjusted to the crankshaft pulley? |
Replies:
Posted By: SteveM C/IL
Date Posted: 23 Jan 2025 at 5:22pm
| That is the pulley used in the Charr-Lynn power steering kit back when you could but a complete setup. You can use a factory p steering pulley instead if you can't get the 4 set screw add on to work. |
Posted By: SteveRogers
Date Posted: 23 Jan 2025 at 9:49pm
| So I think that the bolt fell out for some reason. I plan on trying to just put it back on with a new bolt. Is there any reason that won't work or a problem I'm not thinking of? |
Posted By: DrAllis
Date Posted: 23 Jan 2025 at 9:52pm
| The bolt that secures the OEM crank pulley to the crankshaft snout is a special pointed nose bolt with an Allen head to fit under that power steering pulley that was added on. If the tractor doesn't have power steering anymore, remove that add-on pulley. |
Posted By: Kenny L.
Date Posted: 23 Jan 2025 at 10:17pm
I thinking it take a special bolt with a locking nut if I remember right, but it has been awhile ago when I had to redo one, I'll look and see if I've one on the parts shelves if I remember the next time I'm in the shop.
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SteveRogers wrote:Posted By: SteveRogers
Date Posted: 24 Jan 2025 at 8:09am
| Thanks for the information. Thanks for checking to see if you have one. If you don't, do you have any idea where I might find one? |
Posted By: DrAllis
Date Posted: 24 Jan 2025 at 9:37am
| Is there power steering on the tractor??? yes or no ?? |
Posted By: SteveRogers
Date Posted: 24 Jan 2025 at 10:21am
| yes |
Posted By: DrAllis
Date Posted: 24 Jan 2025 at 10:25am
| OK. So, you must use the setscrew and jam nut required to use the power steering pulley. You cannot use the original setscrew AC used, as it is too tall. |
Posted By: SteveRogers
Date Posted: 24 Jan 2025 at 10:27am
| Ok, thanks. Any ideas where I can get one? |
Posted By: SteveM C/IL
Date Posted: 24 Jan 2025 at 10:40am
| search WD45 crankshaft pulley....you can buy new 2 groove pulley with set screw. Don't cry about the cost. Be glad it's available. |
Posted By: SteveRogers
Date Posted: 24 Jan 2025 at 10:51am
| Thanks, I was beginning to think I might have to do that. |
Posted By: Gary
Date Posted: 24 Jan 2025 at 11:18am
|
The original WD-45 Factory 2 belt Pulley for Power Steering is 70 227395. The Setscrew P/N is 70 918410 G |
Posted By: Kenny L.
Date Posted: 25 Jan 2025 at 3:59pm
does your pulley look like this on.  |
Posted By: SteveRogers
Date Posted: 25 Jan 2025 at 7:53pm
| Yes exactly. Is there any special way to set the Allen screws? |
Posted By: SteveM C/IL
Date Posted: 25 Jan 2025 at 9:16pm
| I'd assume you keep working with it until you get the least wiggle wobble out of it. |
Posted By: ekjdm14
Date Posted: 27 Jan 2025 at 7:55am
I suppose in theory you could chuck it up in a lathe & clock the OD of the pulley groove but not likely to be THAT critical. Main issue would be locating/making a suitable set screw to hold it in place. Assuming the snout of the crank/ID of the pulley are still good I'd probably consider tapering the end of an Allen set screw to engage the crank & fit with red Loctite along with the lock nut which may have been lost originally (But then I am notoriously cheap & it might be "safer" for the crank long term if you bought the correct 2-groove pulley just in case there was something going on with the original).
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Posted By: Kenny L.
Date Posted: 27 Jan 2025 at 12:41pm
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If it was me I would buy the factory pulley, the char-lynn pulley has a tenancy of the set screws coming loose. I got the set screws I use from a farm store and use lock nuts, you must try and get it centered and have the pulleys line up also ( it can be a bear cat) as you can see I put some weld on this one. I'm pretty sure that the setscrew P/N 7091840 is NLA I had my weld shop make me some from setscrew I got from a farm store. HTH |
Posted By: DrAllis
Date Posted: 27 Jan 2025 at 1:43pm
| I'm skeptical that the nose of the crank and the pulley that spun on the nose of the crank are much good after all of that. |