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D-15 head question

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=204926
Printed Date: 22 Jan 2025 at 5:36am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D-15 head question

Posted By: jpi72
Subject: D-15 head question
Date Posted: 13 Jan 2025 at 6:08am

This past week our AC 621 forklift blew a head gasket. This forklift has a D15 engine in it (above 9001 serial number, 160 Cu. In. engine). The head is slightly warped, so we are going to have the head planed .010. The question that we have will we have any problem with pistons hitting the valves?

Joel

Replies:

Posted By: DrAllis
Date Posted: 13 Jan 2025 at 9:30am

NO.

Posted By: Tracy Martin TN
Date Posted: 15 Jan 2025 at 11:17pm

Check the protrusion of the sleeves while you are at it. Make sure to use head gasket with fire rings. HTH Tracy

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