Farm Equipment - WD45 lift arm lock?

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WD45 lift arm lock?

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=181634
Printed Date: 09 Apr 2026 at 5:15pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: WD45 lift arm lock?

Posted By: twinson
Subject: WD45 lift arm lock?
Date Posted: 07 Jul 2021 at 9:34pm

Is there a way to lock the lift arms at a set height? Mine drift up and down as I try to set a height. The hold position is so small on the lever. I have the traction boost unhooked. My valve is turned all the way in on my regulator (top of hydraulic pump? Just wondering. I would prefer a pull rotary cutter, but had to use a three point with no center link.

Replies:

Posted By: Dakota Dave
Date Posted: 07 Jul 2021 at 10:14pm

Use a mechanical stop for the height you want set. I use limiting chains to set my desired height after out raise th EDC mower and turn around drop all the way down the chains stop it from going lower.

Posted By: twinson
Date Posted: 07 Jul 2021 at 10:30pm

Where do you hook your chains to? Top three point and ?? Do you have a photo? I was worried about a chain breaking and wrapping around the PTO shaft or something like that....

Posted By: DrAllis
Date Posted: 08 Jul 2021 at 5:53am

When the "HOLD" position is working correctly, it is located about 1/2 way on the quadrant and has a "click" or detent in it to lock it. Yours isn't set-up right if you are hunting for it.

Posted By: twinson
Date Posted: 08 Jul 2021 at 7:43am

Dr. Allis, where is the actual detent located when the lever in in the middle of the quadrant? is it on the hold valve?

Posted By: DrAllis
Date Posted: 08 Jul 2021 at 7:46am

It is indeed built into the hold valve. The front screw on the hold valve must be screwed OUT. The screw on the two plates needs to fully lock the plates together, which will make the detent work if it is functional.

Posted By: twinson
Date Posted: 08 Jul 2021 at 7:52am

That explains why mine is not working. My screw is in and plate lock is disengaged. Thank you Sir.

Posted By: DrAllis
Date Posted: 08 Jul 2021 at 7:58am

Owners manual.

Posted By: Dennis J OPKs
Date Posted: 08 Jul 2021 at 10:33am

You can use hydraulic cylinder snap-on stop collars on the rams. Work fine so long as you don't have to change your height adjustment frequently.