Char-Lynn power steering
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=202612
Printed Date: 04 Nov 2025 at 6:46am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Char-Lynn power steering
Posted By: snorten7020
Subject: Char-Lynn power steering
Date Posted: 06 Aug 2024 at 11:55am
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Power steering on wd. Steering wheel violently rotates back and forth. Changed O ring seal on steering wheel side of power steering. Full of red oil. Pump appears to be ok. Any help would be greatly appreciated. TIA
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Replies:
Posted By: DrAllis
Date Posted: 06 Aug 2024 at 12:31pm
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It was OK fine until you changed the Oring ???
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Posted By: snorten7020
Date Posted: 06 Aug 2024 at 12:47pm
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It was doing it before O ring change.
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Posted By: DrAllis
Date Posted: 06 Aug 2024 at 3:07pm
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Can't say I've ever had one of those do that. I guess I'd be thinking the centering leaf springs may be broken. Can you stop it from doing this by holding the steering wheel in the center of the back and forth ??
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Posted By: snorten7020
Date Posted: 06 Aug 2024 at 7:16pm
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No. I can't hold it. The front wheels will turn all the way to the left.
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Posted By: Nathan (SD)
Date Posted: 06 Aug 2024 at 10:15pm
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This is a tractor that you have been using for years and it just started this randomly ?
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Posted By: DrAllis
Date Posted: 07 Aug 2024 at 7:53am
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Like I said, never seen one do that. It has to be internal on the top half (input) of the assembly. Maybe a broken leaf (centering) spring ?? Not going to fix itself. Care must be given to reassemble EXACTLY as it was before or the steering wheel will spin like an airplane propeller when you start the engine.
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Posted By: Codger
Date Posted: 07 Aug 2024 at 8:25am
Never worked on one in a farm tractor but rebuilt many in construction equipment. Orbital steering valve is what it is called and support is good for them. They are easy to rebuild on a bench but do install new thrust bearings and washers using only a Char-Lyn rebuild kit.
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That's All Folks!
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Posted By: jdeere562
Date Posted: 07 Aug 2024 at 1:40pm
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Sounds like something was mis-clocked during assembly.
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Posted By: jdeere562
Date Posted: 07 Aug 2024 at 1:42pm
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Sounds like something was misclocked during assembly.
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Posted By: mdm1
Date Posted: 07 Aug 2024 at 2:35pm
I just replaced the O ring on mine and it's not just an off the shelf O ring. It's a square O ring. I used a factory kit. Spendy for a kit but it works. Won't solve your problem though I don't believe.
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Everything is impossible until someone does it! WD45-trip loader 1947 c w/woods belly mower, 1939 B, #3 sickle mower 1944 B, 2 1948 G's. Misc other equipment that my wife calls JUNK!
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