Construction and other equipment - Henry Mark IV Backhoe

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Henry Mark IV Backhoe

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=84452
Printed Date: 29 Jun 2025 at 12:57am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Henry Mark IV Backhoe

Posted By: T JOHN
Subject: Henry Mark IV Backhoe
Date Posted: 06 Feb 2014 at 9:37pm

How can I remove the swing cylinder from the backhoe? I have removed the two large nuts from the studs that hold the cylinder to the platform, thinking that it would lift off, but nothing moves. Where can I get service manual for this unit?

Replies:

Posted By: Coke-in-MN
Date Posted: 07 Feb 2014 at 9:33am

Is this the Rotary Piston type Cessna unit ? If so the 2 studs are a expanding type that fit into bore in casting which is suppose to prevent unit from turning .

The shaft is spline d and fits into machined area of boom. Using pry or hydraulic force from underside should raise unit out of splines

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