Construction and other equipment - 715B Loss of swing and steering

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715B Loss of swing and steering

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=203884
Printed Date: 22 Nov 2024 at 7:42pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 715B Loss of swing and steering

Posted By: Dklsc
Subject: 715B Loss of swing and steering
Date Posted: 28 Oct 2024 at 7:16pm

Finally got the shuttle transmission rebuilt and put back in and I have Forward and Reverse !!
However I have lost the swing and steering, (worked when parked) I see they share a common supply through the swing valve. I have pulled the relief valve and it was clean and not stuck. Everything else works good. Any suggestions where to look next? Thanks

Replies:

Posted By: KRAKMT
Date Posted: 30 Oct 2024 at 11:30am

I have a 715b but have not had to tear into the hydraulic circuit, yet.

Here is a good discussion of something similar.
https://www.allischalmers.com/forum/ac-715d-backhoe-hydraulic-pump_topic96342.html" rel="nofollow - https://www.allischalmers.com/forum/ac-715d-backhoe-hydraulic-pump_topic96342.html

I was thinking that the pump was two circuits.

If you are full of fluid, and have checked the suction screens, it might require a pump refresh but this place has good mechanics that will answer your question better than me.