help no transmission pressure 7G-B loader
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=77401
Printed Date: 30 Nov 2024 at 2:17pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: help no transmission pressure 7G-B loader
Posted By: onehite
Subject: help no transmission pressure 7G-B loader
Date Posted: 22 Sep 2013 at 8:21pm
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I have a 7G B series Allis Chalmers loader. I have no transmission pressure. I can move the loader with the bucket and the transmission will eventually build pressure. I know the gauges are working. I have cleaned what I believe is the main filter, after draining the trans. fluid. Any ideas of what I should check first? I don't have a service manual. Thanks
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Replies:
Posted By: DMiller
Date Posted: 23 Sep 2013 at 5:30am
Supposedly the G-B has the same trans as a HD7G, if so there is a strainer in the face of the trans to the left side as you look down from the operating seat. The steering and trans pump suctions come off that strainer in my 7G when mine came out it was almost solid.
If that is not the issue then check the coupler to the trans pump(top right of the converter) or to see if it is generating pressure as it may have failed.
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Posted By: edwin
Date Posted: 13 Oct 2013 at 9:31pm
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if filters are not clogged. call me i can help. had same problem on my 7g-b.. 417-718-0766
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Posted By: DMiller
Date Posted: 17 Oct 2013 at 7:36pm
This is a 7G trans face, the main strainer is center right as you look at it
http://www.allischalmers.com/forum/uploads/916/072_480x640.jpg" rel="nofollow - http://www.allischalmers.com/forum/uploads/916/072_480x640.jpg
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Posted By: edwin
Date Posted: 03 Nov 2013 at 4:17pm
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call me i think i can help 417-718-0766..
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Posted By: HoneyBadger11681
Date Posted: 07 Apr 2022 at 8:37pm
I have had a similar issue I didn’t know if you had any advice have a 7G crawler loader Im working on and it will start up and run fine the bucket and that work but sometimes the tracks work sometimes they dont sometimes I can run the loader for 8 hrs fine and sometimes I can run it for 10 mins and it will stop moving the tracks I know theyre is an old forum on here I didnt know if anyone else has had them problem and if they have resolve it the fluid and filters have all been changed I am going to start in the hoses next I changed pumps too
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