Construction and other equipment - AC Forklift with D15 engine

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AC Forklift with D15 engine

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=209301
Printed Date: 10 Dec 2025 at 5:23pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC Forklift with D15 engine

Posted By: jpi72
Subject: AC Forklift with D15 engine
Date Posted: 10 Dec 2025 at 2:10pm

I own what I believe is an AC 610 forklift. It has a D15 series II engine (160 cu. in.) Was engine noted to have head problems? The third cylinder lost the keepers on the exhaust valve. We got the valve reattached and replaced with new keepers. Then to find out the that same cylinder has zero compression. After Christmas we will remove the head. Does anyone have experience with this problem?

Joel