8000 governor response
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=49959
Printed Date: 19 Aug 2025 at 9:55am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 8000 governor response
Posted By: rieg
Subject: 8000 governor response
Date Posted: 02 May 2012 at 1:35pm
This has probably been kicked around before but while I am into the governor of the 8030 is there anything I can do to make it more responsive. Our 7020 had a very responsive governor as does our Deere equipment but our 50 and 30 is almost nonexistent. Maybe the adjustment that Ed and the Dr. told me to do is the key?? That was to adjust the tension nut on the governor rod to stop the fluttering. Maybe this is just wishful thinking and maybe it needs to be on the dyno to do this but it sure would be nice to improve the response. Any thoughts?? rieg Thanks to Ed and the Dr. for their help on the fluttering issue.
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rieg
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Replies:
Posted By: injpumpEd
Date Posted: 02 May 2012 at 2:38pm
the fluttering is a governor too sensitive, so tightening the spring makes it even less sensitive. Upon rebuild, spring shimming can be set differently to help with sensitivity, but the M100 will never be as responsive as a Roosa.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Posted By: DrAllis
Date Posted: 02 May 2012 at 7:15pm
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The governor on an AmBach pump is "dead" compared to a RoosaMaster regardless what you do to it. Live with it or change it to a RoosaMaster.
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Posted By: darrel in ND
Date Posted: 03 May 2012 at 7:25am
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I am thinking more and more all of the time, that I'm glad I have the roosa on my 8070. Darrel
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Posted By: victoryallis
Date Posted: 03 May 2012 at 8:12am
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Neighbor put a pump from a 7050 on his 8050 took alot of work but it was do able. He really liked his results.
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Posted By: Kcgrain
Date Posted: 03 May 2012 at 9:11am
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In my opinion there is only one way to correct the ambac pump problems and it can be found at mailto:Relianceworks@aol.com" rel="nofollow - Relianceworks@aol.com
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Posted By: Kevin in WA
Date Posted: 03 May 2012 at 10:24am
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If your going to go through the trouble of changing it to a roosa then you might as well put an A series Bosch inline on it, they both would require removing front cover and changing the idler gear, Kcgrain has the pumps and adapters, Trust me you will never go back to an AMBAC 100, Just don't get wild with the fuel setting, 180 HP max.
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Posted By: rieg
Date Posted: 03 May 2012 at 1:37pm
Was the switch from Roosa to the AMBosch because of hard starting issues or were there other reasons. What advantages does the bosch have over the roosa if any? Was there a cost savings to go with bosch? I guess I just don’t understand the switch. If you don’t have good governor response you are loosing productivity I was looking at the Nebraska test and the lugging hp was terrible on the 8000’s. Did someone mess up and if so why wasn’t it addressed? I guess I am just trying to rap my head around this, maybe even venting a little although I’m not sure why. I really like our Allis tractors better than our Deere which is ten years newer. rieg
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rieg
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Posted By: Kevin in WA
Date Posted: 03 May 2012 at 6:01pm
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Started better and less smoke, if you go back to the roosa you will have more smoke.
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Posted By: SteveM C/IL
Date Posted: 03 May 2012 at 11:31pm
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EPA was starting to rear it's ugly head. It was an emmissions move not an improvement.
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Posted By: injpumpEd
Date Posted: 04 May 2012 at 6:27am
The nozzle opening pressures kept being raised to cut down on smoke, and the Model 100 tolerates high opening pressures better than a Roosa.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Posted By: DrAllis
Date Posted: 04 May 2012 at 7:04am
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Let me clarify one thing about the M-100 AmBach governor characteristics.....at wide open throttle they are fine. At less than say 2000 rpm, they are noticeably less responsive than other brands. Anyone who has ever driven an IH1066, remembers having to keep tapping up the throttle when taking off in a big gear.
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