Farm Equipment - Tach and speedo

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Tach and speedo

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=102197
Printed Date: 09 Sep 2025 at 8:48pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Tach and speedo

Posted By: AdamK
Subject: Tach and speedo
Date Posted: 19 Feb 2015 at 7:58pm

My D15 is a serise 2 but I don't know what the serial number is because it's all pitted away. How do I know what tach/speedo gauge I need?.

Replies:

Posted By: DrAllis
Date Posted: 19 Feb 2015 at 8:25pm

Your serial number is above 9001. Pretty sure all D-15 gassers used the same tachometer. Counter-clockwise needle movement.....2400 RPM top speed........1800 RPM PTO 540 speed.