Farm Equipment - Steering pump leak on 7040

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Steering pump leak on 7040

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=210603
Printed Date: 03 Apr 2026 at 6:16am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Steering pump leak on 7040

Posted By: JPG AUSTRALIA
Subject: Steering pump leak on 7040
Date Posted: 01 Apr 2026 at 5:48pm

I have a erratic leak on the 7040,every now and then it will start leaking oil out the steering column onto the the floor then stop and not leak a drop for another few weeks or more,it makes a helluv a mess and i have kit for it but wondering as how it stops leaking that maybe the priority valve is sticking now and then and over pressuring it. Is this something that can happen?

Replies:

Posted By: DrAllis
Date Posted: 01 Apr 2026 at 5:55pm

Just reseal the steering orbitrol. It's probably never been done before. Don't tear the whole thing apart. Just replaced the dust seal, quad seal and one Oring on the top.

Posted By: JPG AUSTRALIA
Date Posted: 02 Apr 2026 at 12:28am

Thanks for the reply doc