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help no transmission pressure 7G-B loader
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onehite View Drop Down
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Joined: 22 Sep 2013
Location: virginia
Points: 7 		Post Options Post Options   Thanks (0) Thanks(0)   Quote onehite Quote  Post ReplyReply Direct Link To This Post Topic: help no transmission pressure 7G-B loader
    Posted: 22 Sep 2013 at 8:21pm
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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DMiller View Drop Down
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31119 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post 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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edwin View Drop Down
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Joined: 06 Apr 2013
Location: lebanon mo
Points: 49 		Post Options Post Options   Thanks (0) Thanks(0)   Quote edwin Quote  Post ReplyReply Direct Link To This Post Posted: 13 Oct 2013 at 9:31pm
if filters are not clogged. call me i can help. had same problem on my 7g-b.. 417-718-0766
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DMiller View Drop Down
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Joined: 14 Sep 2009
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Points: 31119 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post 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

Edited by DMiller - 17 Oct 2013 at 7:38pm
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edwin View Drop Down
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Joined: 06 Apr 2013
Location: lebanon mo
Points: 49 		Post Options Post Options   Thanks (0) Thanks(0)   Quote edwin Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2013 at 4:17pm
call me i think i can help 417-718-0766..
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HoneyBadger11681 View Drop Down
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Joined: 07 Apr 2022
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HoneyBadger11681 Quote  Post ReplyReply Direct Link To This Post 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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