Farm Equipment - D19 Hyd pump?

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D19 Hyd 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=122239
Printed Date: 24 Aug 2025 at 3:44pm
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Topic: D19 Hyd pump?

Posted By: Dave in il
Subject: D19 Hyd pump?
Date Posted: 21 Apr 2016 at 6:24pm

The D19 has been sitting for a few years and we finally have it running. Everything is working except the hydraulics. It will raise the lift arms slowly if you move the traction booster lever to the top of the quadrant but it won't raise with the lift lever but it does hold and drop them. The remote outlets don't have any pressure to them at all.

Mine is an early tractor and the manual says it's a split type pump contains two separate pumps in one body. The Traction Booster pump is separate from the Lift Lower pump. I'm guessing the Traction Booster pump is the only one pumping or there is a relief valve stuck open.

Any hints or suggestions? I assume I'm going to be pulling and rebuilding the pump.

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AGCO My Allis Gleaner Company

Replies:

Posted By: MACK
Date Posted: 21 Apr 2016 at 9:34pm

Sounds like some of the pumping plungers are stuck. Just needs taken out and cleaned up. MACK