Farm Equipment - Still Fighting CA Pump

Print Page | Close Window

Still Fighting CA Pump

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=51790
Printed Date: 30 Sep 2024 at 1:23am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Still Fighting CA Pump

Posted By: wkpoor
Subject: Still Fighting CA Pump
Date Posted: 08 Jun 2012 at 2:51pm

Well if anything good has come from this debacle its has been that I learned the pump can be removed without removing the pan. Easiest way is to first remove the hold position valve of the top of the pump. That gives you easy access to the top fasteners holding the pump onto the pto housing.
I went clear through the whole pump. Clean and nothing out of place. Put it back on and same exact problem. The unloading valve in the pump won't stay unloaded. So if you push in the clutch for any reason then release to move again its like the tractor is internally locked up which is nothing but the pump trying to restore 3500psi from say 3400psi. It should stay unloaded till the handle is cycled the way I read it. I found a work around today by moving the handle back till you feel the linkage just try to push on the unloader and then it will stay unloaded. I don't think however the Allis guys intended for it to work that way. I have already played with the linkage rod and no position will make it any better.

Replies:

Posted By: wkpoor
Date Posted: 08 Jun 2012 at 4:27pm

Well I called Duke to pick his brain. Only guy I could think of that has cultivated with a CA and knows the tractor very well. He said after front and rear gangs are raised you must return the handle to the first detent. Not sure if their really is a detent there but there is a spot you can feel in the lever that does make it work. So just maybe I never had a problem from the getgo.