Construction and other equipment - Fuel Injection Pump

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Fuel Injection Pump

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=205956
Printed Date: 12 Apr 2025 at 1:59am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Fuel Injection Pump

Posted By: Vinnys21
Subject: Fuel Injection Pump
Date Posted: 20 Mar 2025 at 7:03am

Hey guys, I am new to this forum and own a 1985 Allis Chalmers 653. Unfortunately, I believe the shaft in the injection pump has broken. Is there a rebuild kit that anyone is aware of for this with the seals? I plan to take it out this weekend and actually look but trying to get ahead. I have seen a lot of people mention it is based off of an HD4. I know some places can rebuild them but want to be able to do it myself and learn along the way. Any insight would be extremely helpful, thank you in advance.

Replies:

Posted By: Codger
Date Posted: 20 Mar 2025 at 7:26am

Roosa-Master pump? Easy pump to rebuild but you can't calibrate it correctly and that is best left to a fuel shop with the needed equipment. Lot of wear parts to be addressed.

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That's All Folks!

Posted By: Mikez
Date Posted: 20 Mar 2025 at 8:28am

Try posting this in farm equipment section and maybe injectorpumpEd will comment. He has a pump rebuild shop and would give sound advice. Not sure if he looks through construction area.