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7g recovered after 10 years

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=174564
Printed Date: 23 Nov 2024 at 5:08pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: 7g recovered after 10 years
Posted By: Tjsauto
Subject: 7g recovered after 10 years
Date Posted: 20 Sep 2020 at 11:30pm
Got a 7g out of the woods after sitting there for 10 years or more the man that owned it was clearing 0ut some land but there was no belly pan on it ripped out some hoses then let it sit at the time it was sitting on the ground but years later was washed out under neath finally got it home the injector pump plunger is broken I've been looking at this site and no there are little or no pumps out there I seen someone talk about a pump head that had serial number # 5900ar that is what mine has new to this site will show some pictures
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Replies:
Posted By: Ian Beale
Date Posted: 21 Sep 2020 at 1:09am
I've got a .pdf listing of heads.  This shows 5900 as a replacement for at least one earlier one (I haven't looked hard) but not having any successors.

The "R" means the head has been rebuilt


Posted By: DMiller
Date Posted: 21 Sep 2020 at 6:23am
AMBAC pumps are no longer parts available by Am Bosch, the availability of repair parts has gotten so limited few will even look at them around here.  About the only way to procure the internals is find another pump on a engine or on a shelf that has not been rolled to break the plunger and disassemble that pump, CAREFULLY.


Posted By: Ian Beale
Date Posted: 22 Sep 2020 at 4:46am
Been a while since I went through this on an AC Forty Five.

Likely there is a stud that goes into the head on the rear (towards the back of the machine).  It is an oil feed and you have to take it out to remove the head - including the square rubber ring on its tip - which will hold the head if you don't.  And you take it out carefully as it is one of the "unobtanium".  I've seen a suggestion that an o-ring can be used but no details - IIRC it would have to be a fat one.


Posted By: Tjsauto
Date Posted: 28 Sep 2020 at 7:34pm
I'm still trying to figure out this camera to post some pictures


Posted By: gemdozer
Date Posted: 29 Sep 2020 at 5:31am
I check today if am still have a pump plunger because have 2 injections pumps dismantled for parts


Posted By: Tjsauto
Date Posted: 29 Sep 2020 at 7:11pm
Thanks let me know it broke the spring and drive plate also I read some where the drive plate is still available but I don't know where


Posted By: gemdozer
Date Posted: 30 Sep 2020 at 8:13am
I check yesterday and have a plunger 3 1/2 inch long and a spring 1 1/4 inch long and if you could send a picture for the pieces to make sure.
                              gemdozer@hotmail.com


Posted By: SteveM C/IL
Date Posted: 03 Oct 2020 at 2:18pm
What's the chance another pump could be adapted. Seen Cummins semi puller with a Cat injection tied on it. Anything is possible.


Posted By: gemdozer
Date Posted: 03 Oct 2020 at 3:37pm
I found a complete pump PSB4A-100EH 5007A1 and parts number  4336644  and this pump should fit on 344 motor hd6


Posted By: Ian Beale
Date Posted: 03 Oct 2020 at 4:59pm
" What's the chance another pump could be adapted."

IIRC - Big problem is that PSB pumps run at crank speed and the reduction is in the pump


Posted By: Tjsauto
Date Posted: 25 Apr 2023 at 9:41pm
do you still have pump


Posted By: gemdozer
Date Posted: 26 Apr 2023 at 1:06pm
Yes am still have the injection pump -PSB4A-100EH5007A1



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