Farm Equipment - WD45 hydraulic pressure

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WD45 hydraulic pressure

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=150133
Printed Date: 16 Dec 2025 at 11:26pm
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Topic: WD45 hydraulic pressure

Posted By: sadmyentist
Subject: WD45 hydraulic pressure
Date Posted: 04 May 2018 at 6:07pm

So I'm trying to assess the health of my hydraulic pump. When I disconnect one cylinder and hook up a gauge, the gauge hits a 3000-3200 psi transient when the rockshaft hits its stop, then drops to 2500 psi....I'm guessing that is where the unloading valve is currently set. Then it slowly drifts down to 1500 where it stabilizes. I'm thinking that might be the dripping from the gauge threads.

Any thoughts on this state of affairs?

Thanks all,

Rob

Replies:

Posted By: DrAllis
Date Posted: 04 May 2018 at 6:58pm

Sounds like a system that would be working and functioning just fine and would never have had a gauge connected to it because of that. 3400 psi is max setting. Anything over 3,000 I consider very normal. They don't build 3000 or 3400psi and maintain that pressure.

Posted By: sadmyentist
Date Posted: 04 May 2018 at 7:04pm

10-4. Much appreciated!