Farm Equipment - Allis Chalmers C Hydraulic pump

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Allis Chalmers C Hydraulic 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=203342
Printed Date: 23 Sep 2024 at 5:30am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis Chalmers C Hydraulic pump

Posted By: John426
Subject: Allis Chalmers C Hydraulic pump
Date Posted: 23 Sep 2024 at 1:02am

The manuel says thaht the hydraulic pump pressure is 3200 lbs ( 220 bars) ; It seems a little bit high.

On mine with the pressure gauge i have 1740 lbs ( 120 bars) at iddle and 2030 lbs ( 140 bars) at high engine rpm.

Do you have the real pressure take with a pressure gauge on the tractor?

Replies:

Posted By: DiyDave
Date Posted: 23 Sep 2024 at 4:35am

May seem high, but that's what it is supposed to be. Early AC systems were high pressure, low volume(4 GPM). Sounds like yours is wore out...

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Posted By: Gary
Date Posted: 23 Sep 2024 at 5:07am

Dave has got it right. Pump Overhaul in the Allis Service Manual for 'B' and 'C' states Relief Valve should operate at 3200 psi.

Gary