722.409 Valve body - Mercedes-Benz Forum
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post #1 of 11 (permalink) Old 06-11-2019, 07:13 PM Thread Starter
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Date registered: Mar 2010
Vehicle: 1990 190e 2.6l Calif. auto 1987 Ford F150 4.9L Calif. man 4OD 4X4 2013 Suzuki C50 Crusier
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722.409 Valve body

I have a 1990 190e 2.6L 722.409 trans and have the valve body apart and cleaning it up. I lost the forward and reverse gears when it is on the ground. With it up in the air in drive the wheels have some movement forward and when put in reverse the wheels still go forward and do not go in a reverse direction. I have 100 psi in park at idle and 120 psi in park at 2000 rpms, but no pressure or fluid on modulating side. modulator is about 10 years old and vacuum and modulator tests good still. I even took the modulator out to check it and the pin is ok. I put new bands and clutches in the trans about 14 years ago. I did put a K1 kit in it about a month ago. then 3 weeks later I backed out of the driveway and put it in drive and then nothing but rolled. I have all the parts out of the valve body and in order. But when I was taking the pressure control valve and plunger assy out of the body the middle parts of that valve fell apart. I have the front retainer and then the next part in order. And then the very last part of the assy. But the middle parts slid out and are out of order. The pic in my book is not very clear of the assy. So I need a pic of the pressure control valve and plunger assy. I am thinking I have a block or something sticking in the valve body. I am ready to pull the trans if still have a problem after valve body is reinstalled.
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post #2 of 11 (permalink) Old 06-11-2019, 07:29 PM Thread Starter
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I will see if I can upload a picture. The pressure control valve is on the upper valve body at the other end from the manual valve on the side.

Last edited by zpa001; 06-11-2019 at 07:33 PM.
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post #3 of 11 (permalink) Old 06-14-2019, 09:34 AM
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I will see if I can upload a picture. The pressure control valve is on the upper valve body at the other end from the manual valve on the side.
looking forward to this
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post #4 of 11 (permalink) Old 06-14-2019, 07:58 PM Thread Starter
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Looking forward to what ??????
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post #5 of 11 (permalink) Old 06-16-2019, 03:42 PM
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Looking forward to what ??????
I suspect your picture. It was not posted.
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post #6 of 11 (permalink) Old 06-16-2019, 09:45 PM
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I suspect your picture. It was not posted.
your suspicion is correct
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post #7 of 11 (permalink) Old 06-16-2019, 10:26 PM Thread Starter
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As soon as I find my camera cord I will put up the picture of the valve. From all of the picture in the book I have and the pictures with the valve I have seen it is not clear, kinda like a fussy fax picture. But I did find a picture of the valve that is clear at the bottom of a page in a PDF that I book marked shows all the parts in order. I will put something up soon.
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post #8 of 11 (permalink) Old 06-16-2019, 10:31 PM Thread Starter
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I do have the lower and top valve body back together and waiting on the gasket. It figs motorcycle weather and now the car takes a dump. So what better time than to get the motorcycle out.
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post #9 of 11 (permalink) Old 06-16-2019, 11:21 PM Thread Starter
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This is the 2 part valve, the part that is in the bore first is the pressure control valve and the part next is the pressure control valve plunger. All these parts go together one after the other with no divide keeper in between. I took the first 2 parts out then the middle fell out on the table out of order and 1 last part was still in the bore. The valve I am talking about is on the far right in the picture.
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Last edited by zpa001; 06-16-2019 at 11:38 PM.
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post #10 of 11 (permalink) Old 06-16-2019, 11:36 PM Thread Starter
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I found this picture on a website with some other valve lineup. This picture was at the bottom of the page . I don't know why the put it on the page with the other valve body. But it is the same valve I have in my trans.
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