Farm Equipment - Model B Governor

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Model B Governor

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=177164
Printed Date: 03 Sep 2025 at 5:06am
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Topic: Model B Governor

Posted By: Gafry53
Subject: Model B Governor
Date Posted: 31 Dec 2020 at 7:21am

I bought a Model B 1955 but when driving the tractor the engine bogs down when going up a hill. Bought a tune up kits for the tractor but think it maybe the governor??

Replies:

Posted By: Dick L
Date Posted: 31 Dec 2020 at 9:02am

I would doubt it would be a governor problem. More than likely a fuel problem. A fuel restriction will cause this. A governor limits the amount of fuel going ito the engine. With the rpms at high idle (running wide open without a load) the throttle plate in the carburetor is not wide open. when the load is added it will start to slow the rpms and the govenor opens that throttle plate more to let more fuel in to hold the rpms at you setting. If you are already using the available fuel opening the throttle plate does not have more fuel available to keep the engine up to speed.

This is how it works and why it is my guess. It is where I would start my checking from the tank all the way thru the carburetor if necessary.

Posted By: Brian G. NY
Date Posted: 02 Jan 2021 at 3:57pm

But.......if the governor is not opening the throttle as the engine RPMs decrease when he begins to ascend the hill, wouldn't the engine bog?