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WD crankshaft parts
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SteveRogers View Drop Down
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Joined: 21 Jun 2023
Location: Geneseo, IL
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    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?  
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8495 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post 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.
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SteveRogers View Drop Down
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Joined: 21 Jun 2023
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveRogers Quote  Post ReplyReply Direct Link To This Post 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?
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DrAllis View Drop Down
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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.
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Kenny L. View Drop Down
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Joined: 12 Sep 2009
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Points: 1331 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Kenny L. Quote  Post ReplyReply Direct Link To This Post Posted: 23 Jan 2025 at 10:17pm
Originally posted by SteveRogers SteveRogers wrote:

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?

 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.


Edited by Kenny L. - 23 Jan 2025 at 10:21pm
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SteveRogers View Drop Down
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Joined: 21 Jun 2023
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveRogers Quote  Post ReplyReply Direct Link To This Post 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?
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DrAllis View Drop Down
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Is there power steering on the tractor??? yes or no ??
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SteveRogers View Drop Down
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yes
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DrAllis View Drop Down
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Points: 21395 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post 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.
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SteveRogers View Drop Down
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Joined: 21 Jun 2023
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveRogers Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jan 2025 at 10:27am
Ok, thanks.  Any ideas where I can get one?
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SteveM C/IL View Drop Down
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Points: 8495 		Post Options Post Options   Thanks (1) Thanks(1)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post 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.
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SteveRogers View Drop Down
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Joined: 21 Jun 2023
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveRogers Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jan 2025 at 10:51am
Thanks,  I was beginning to think I might have to do that.
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Gary View Drop Down
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Points: 5882 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary Quote  Post ReplyReply Direct Link To This Post 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
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Kenny L. View Drop Down
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Points: 1331 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Kenny L. Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jan 2025 at 3:59pm
does your pulley look like this on.
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SteveRogers View Drop Down
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Joined: 21 Jun 2023
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveRogers Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jan 2025 at 7:53pm
Yes exactly.  Is there any special way to set the Allen screws?
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SteveM C/IL View Drop Down
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Points: 8495 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post 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.
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Points: 742 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ekjdm14 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jan 2025 at 7:55am
Originally posted by SteveM C/IL SteveM C/IL wrote:

I'd assume you keep working with it until you get the least wiggle wobble out of it.

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).


Edited by ekjdm14 - 27 Jan 2025 at 7:58am
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Kenny L. View Drop Down
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Points: 1331 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Kenny L. Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jan 2025 at 12:41pm
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
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DrAllis View Drop Down
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Points: 21395 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post 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.
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