D 15 Series II engine question
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=209302
Printed Date: 10 Dec 2025 at 5:22pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D 15 Series II engine question
Posted By: jpi72
Subject: D 15 Series II engine question
Date Posted: 10 Dec 2025 at 2:15pm
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I own an AC forklift with a D15 Series II (160 cu. in) engine. Cylinder 3 has zero compression currently. It happened quite suddenly. Does this engine have head problems? We are planning on taking the head off after Christmas. Joel
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Replies:
Posted By: DSeries4
Date Posted: 10 Dec 2025 at 2:39pm
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It's a stout engine with no known issues. Could be a stuck valve? You won't know until you open it up. ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Posted By: DiyDave
Date Posted: 10 Dec 2025 at 3:26pm
#'s 2 and 3 are closest to the upright muffler. Could be as easy as rust hanging a valve open... ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: steve(ill)
Date Posted: 10 Dec 2025 at 3:50pm
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take the valve cover off and look at the valves now... then you can narrow down any work on the head ... ------------- Like them all, but love the "B"s. |