Farm Equipment - Gleaner A header cylinders

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Gleaner A header cylinders

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=110178
Printed Date: 14 Sep 2025 at 7:42am
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Topic: Gleaner A header cylinders

Posted By: jaybmiller
Subject: Gleaner A header cylinders
Date Posted: 10 Aug 2015 at 6:10am

OK, dumb question but just HOW does the header manage to stay up for ever? I mean every other hydraulic system I've had/seen sooner or later whatever is up does come down ! Usually the weight of the load will push the oil backwards.
Just curious, like my new kitten.

Jay

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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water

Replies:

Posted By: MACK
Date Posted: 10 Aug 2015 at 7:32am

Most hydraulic valves only use a fit to spool to keep oil from returning. The header valve uses a poppet to keep oil from returning that takes hydraulic pressure to unseat it. Does two things that most other valves don't do. #1 a safety to keep header from going down unless there is oil pressure to let it down. #2 keeps header from leaking down over time. MACK