Farm Equipment - 7040 Cylinder Disassembly

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7040 Cylinder Disassembly

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=151758
Printed Date: 11 Aug 2025 at 9:26am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 7040 Cylinder Disassembly

Posted By: Play Farmer
Subject: 7040 Cylinder Disassembly
Date Posted: 03 Jul 2018 at 12:59pm

Once again, I'm looking for a little help. I'm trying to get the steering cylinder apart and I've run into an odd issue. I've rebuilt many cylinders before, heck I've even been to hydraulic seal/cylinder upgrade school - this one has me stumped.

Normally it's a pretty basic deal, remove the snap ring, push in the glad until the spring retaining ring is exposed, pop that out and go to work.

My problem is the glad will not go in far enough to expose the ring. It goes in almost far enough then it's like it bottoms out on something inside the cylinder.

I've tried everything I can think of; I filled the snap ring grove thinking maybe the ring was dropping in it - didn't work. I put it in my press. It goes down as far as it does tapping it in then same thing - it bottoms out. I even tried the "drill a small hole and try pushing the spring in to get hold of it" trick, there just isn't enough room.

Has anyone ever run into this before? Any suggestions?

Replies:

Posted By: LB0442
Date Posted: 03 Jul 2018 at 3:57pm

I have done a few of them. Haven't run into that, yet. That pressure port is close to the end could someone have possibly put a longer fitting in it, hitting on that collar? Course if it was that long it would probably catch on the piston for the ram. Maybe you can see something through that fitting?