Farm Equipment - Case drain on AC 8070

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Case drain on AC 8070

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=194973
Printed Date: 23 Aug 2025 at 10:17pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Case drain on AC 8070

Posted By: ajl
Subject: Case drain on AC 8070
Date Posted: 04 May 2023 at 9:33am

Installed a new fan on my air seeder cart last year and unlike the old one, this one has a third hydraulic hose which is a low pressure case drain. Just needs an outlet to the hydraulic reservoir on the tractor. I have just stuck this hose in the hydraulic fill for now but due to venting issues this tends to deprive the pump from time to time such that the hydraulic warning light on the dash come on and goes off regularly. Just wondering if anybody has put a case drain on one of these tractors and where and how. Thanks.

Replies:

Posted By: SteveM C/IL
Date Posted: 04 May 2023 at 12:28pm

Some use the upper sight glass hole

Posted By: HudCo
Date Posted: 04 May 2023 at 3:06pm

probley full of dirt by now