Farm Equipment - 7020 hydraulic

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7020 hydraulic

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=155735
Printed Date: 05 Aug 2025 at 1:57pm
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Topic: 7020 hydraulic

Posted By: R Aiken
Subject: 7020 hydraulic
Date Posted: 19 Nov 2018 at 5:21pm

do they have an open or closed hydraulic system?

Replies:

Posted By: Ron(AB)
Date Posted: 19 Nov 2018 at 6:31pm

I think its closed centre, pressure compensating...

Do you have one?

Posted By: R Aiken
Date Posted: 19 Nov 2018 at 7:54pm

No don't have one, my boy is thinking about something.

Posted By: tbran
Date Posted: 19 Nov 2018 at 11:12pm

PFC - pressure flow compensated - like many modern tractors - has a stand by pressure then a sensing line to stroke the pump... if one is thinking a loader valve - there are open center, closed center then PFC... all different..

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: Yunggun4
Date Posted: 20 Nov 2018 at 5:33am

We have a 7020 and it’s Closed Center. I needed to find out for the hay accumulator.