Farm Equipment - WD Head Gasket

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WD Head Gasket

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=189947
Printed Date: 22 Aug 2025 at 3:18am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: WD Head Gasket

Posted By: JD-Ohio
Subject: WD Head Gasket
Date Posted: 08 Aug 2022 at 1:42pm

Looking for the disassembly procedure to replace the head gasket on a WD.

Replies:

Posted By: WF owner
Date Posted: 08 Aug 2022 at 3:23pm

it's a pretty straight forward procedure. Drain coolant, remove hood, valve cover, rocker arm shaft, push rods and head bolts. If there is no reason to remove the manifold, leave it alone. Carefully remove the head, making sure you have a good place to set it down.

My advice would be to buy an AC Service manual.

Head gasket failure is not usually a problem in the 201 or 226 AC engines. I'm not saying it's not the problem, but a lot of head gaskets have been changed without fixing the initial problem.

If you have coolant in the oil, DO NOT REMOVE THE HEAD! Pressurize the cooling system and try to find where the coolant is coming from (it will almost certainly mean removing the oil pan). Find out the source of the leak before you remove the head. A few possible causes may be a hole in a liner (sleeve), defective O rings on the liner, a crack in the head or block, etc., but the first step is to find out what is causing the problem, rather than throwing unneeded parts at it.

Posted By: ACinSC
Date Posted: 08 Aug 2022 at 3:37pm

May be totally different but I just dealt with this on my gas D 15. Auto Zone had a $250 loaner pressure tester that worked for me. Good luck!