Farm Equipment - CA lift arms

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CA lift arms

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=20412
Printed Date: 11 May 2024 at 3:02am
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Topic: CA lift arms

Posted By: PJsomd
Subject: CA lift arms
Date Posted: 05 Nov 2010 at 6:03pm

Has anyone had trouble with CA lift arms that get stuck up and wont go down we had one CA that did it a couple of times but seem to work its way out now we have another that is stuck up and wont go down.we cracked a line and got arms to go down but as soon as you put the pto in gear the arms go up again even with the lever in the down position.took the back of the assembly off did not see nothing obvious and also cleaned the top relief valve and put back together still no luck.also took a couple of shims out of that releif valve (what the book said )but did not do anything. thanks f

Replies:

Posted By: wkpoor
Date Posted: 05 Nov 2010 at 6:15pm

You have some FOD in the pump assembly. I've seen it too. I would drain the PTO reservior and see if you have metal. If you do then the pump may need torn down and cleaned out. The slightest particles can jam up the spool assembly in the pump and there is no screen on the pickup. If a bearing or anything fails in the transmission or differential the metal will eventually find its way to the pump.

Posted By: PJsomd
Date Posted: 05 Nov 2010 at 6:41pm

makes sense thanks

Posted By: Eldon (WA)
Date Posted: 05 Nov 2010 at 8:53pm

Try disconnecting the rod that comes up from the snap coupler and rotate that shaft manually....worked for me....

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Posted By: Chris (swIA)
Date Posted: 05 Nov 2010 at 9:02pm

Sounds like the spool has some junk in it. Screw the screw on the front of the pump all of the way in and the arms should go down. Then screw it back out and it should work normally again.

Posted By: Bill Long
Date Posted: 05 Nov 2010 at 9:45pm

Right on Chris!!! If that don't work then you have to work on the pump.

Drian the oil first as suggested above. Then do the screw in the front of the pump.

Let us know how it goes.

Good Luck!

Bill long

Posted By: PJsomd
Date Posted: 06 Nov 2010 at 7:01am

ok thanks for the help guys

Posted By: RMD
Date Posted: 06 Nov 2010 at 10:19am

My D-12 (Series II) will do that too. When it does it generally means that something is out of wack in the traction booster linkage.

Posted By: PJsomd
Date Posted: 07 Nov 2010 at 5:45pm

Thanks guys changed the oil screwed in and out volume control a couple of times and finaly started working thanks for all the good help