Farm Equipment - 220 injection pump shaft

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220 injection pump shaft

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=205824
Printed Date: 12 Mar 2025 at 12:45pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 220 injection pump shaft

Posted By: JM185
Subject: 220 injection pump shaft
Date Posted: 11 Mar 2025 at 9:24pm

I believe I have found the correct injection pump drive shaft for the 220. It is stamped with the number 16063. This engine had a DB pump with tang drive shaft in it and I've been searching parts to get the correct setup. There is a difference in the depth of the hole for the thrust button and spring between the tang shaft and splined shaft. Button and spring I took out has a combined length of 2.055. When set in the shaft, the button sits around .110 deeper in the splined shaft.
There is no number on the button. How far should the button protrude from the end of the shaft? If it is correct for the tang shaft, can I machine a spacer to put down in the splined shaft to bring it up to proper height?

Replies:

Posted By: DrAllis
Date Posted: 11 Mar 2025 at 9:49pm

What you cannot have is a bottoming out of the spring when you install the cover over the gear. Lay a straight edge against the button and test for this. I guess you'd probably want near max pressure the spring can provide WITHOUT bottoming out.