Construction and other equipment - AC 715B steering issues

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AC 715B steering issues

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=207604
Printed Date: 31 Jul 2025 at 11:31am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC 715B steering issues

Posted By: Specialized37
Subject: AC 715B steering issues
Date Posted: 29 Jul 2025 at 7:58pm

Recently bought a 715B (I think) The plate also shows 715D just below the 715B. Steering works great for a while, then starts to feel like it is slipping, then stops steering all together. Can continuously turn steering wheel with no movement at the wheels. Previous owner replaced the orbital valve and thinks that he had the steering cylinder rebuilt. I have been trying to locate the priority valve. I think it may have been removed before the previous owner purchased it. Where should I find the priority valve on the backhoe? Is it possible to properly operate without it since there is a separate steering pump? Thanks