Print Page | Close Window

Allis Chalmers 7030 7040 Differences

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=173243
Printed Date: 07 Apr 2026 at 4:35am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: Allis Chalmers 7030 7040 Differences
Posted By: btred1466
Subject: Allis Chalmers 7030 7040 Differences
Date Posted: 31 Jul 2020 at 7:58pm
What were the differences between the Allis Chalmers 7030 and 7040's? 7040's had a Power Shift Transmission option and 5 or 6 more Horsepower and Longer Axles. 

What are the other differences other than the Model numbers?



Replies:
Posted By: DrAllis
Date Posted: 31 Jul 2020 at 8:10pm
Power Shift wasn't available until very late 1975, which was a year after the intro of the 7040.  Hydraulic outlets were moved to a better location. Power Director transmission actually had 19 speed choices out of 20 selections instead of 15 or so on the 7030.  Engine had piston cooling jets, 7030 did not. Rear axle diameter sizes were 3 3/4" instead of 3 5/8". Long axles were available on the 7030, just not many were sold.  Warning flashers eventually got moved down off of the rooftop. That's all I can remember.


Posted By: injpumpEd
Date Posted: 01 Aug 2020 at 9:43am
Improved injection pump with more internal timing advance, to allow it to be timed from 24* to 18* for easier starting. 

-------------
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!



Print Page | Close Window

Forum Software by Web Wiz Forums® version 11.10 - http://www.webwizforums.com
Copyright ©2001-2017 Web Wiz Ltd. - https://www.webwiz.net