Farm Equipment - WD hydraulics misbehaving

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WD hydraulics misbehaving

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=36817
Printed Date: 28 Aug 2025 at 11:45am
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Topic: WD hydraulics misbehaving

Posted By: Embellem
Subject: WD hydraulics misbehaving
Date Posted: 06 Sep 2011 at 1:07pm

MY WD has a 3-point conversion on it and it's doing some strange things.

First, sometimes when I lower the control lever on the quadrant all the way to the bottom, the lift arms won't go down. They will eventually drop, though it could be a few seconds up to a couple of minutes.

The other thing it will do is sometimes when the lift arms do go down after lowering the control on the quadrant, the arms and control lever will go back up automatically like there is back pressure someplace.

Any ideas? Seems like it has a mind of its own sometimes.

Replies:

Posted By: Terry GA
Date Posted: 06 Sep 2011 at 1:29pm

Could be to much play in the linkage rods or just out of adjustment.May just need to adjust a little and try it.Kind of like "Fire and and adjust caliber 50".....walk it in.

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I couldn't repair your brakes, so I made your horn louder.

Posted By: DaveKamp
Date Posted: 07 Sep 2011 at 8:01am

Check to make sure that your hydraulic oil level hasn't gone down- if the oil's getting aereated, it'll cause the valve to act funky, and the arms to magically lift themselves for no reason...

Oh, and check the level COLD... like... after it's been sitting for a day or so... when it's aereated, the level will ALWAYS appear to be high.

Posted By: KenBWisc
Date Posted: 07 Sep 2011 at 8:33am

Check the Traction Booster linkage bolt which should be screwed in along the bottom, left hand side of the pump. It this isn't secure the lever won't stay down.

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'34 WC #629, '49 G, '49 B, '49 WD, '62 D-19, '38 All Crop 60 and still hunting!