Rod bearing wear
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=209936
Printed Date: 01 Feb 2026 at 3:37pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Rod bearing wear
Posted By: Acguywill
Subject: Rod bearing wear
Date Posted: 01 Feb 2026 at 1:15pm
So this is a picture of a rod bearing from the engine I had the antifreeze issue with.  All six bearings have the same mark in the same place. What caused it? It is deep and can easily be felt. The crank looks and feels fine. |
Replies:
Posted By: WF owner
Date Posted: 01 Feb 2026 at 1:35pm
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Antifreeze has/is glycol. Glycol is in the glucose (sugar) family. Antifreeze in the oil reduces the ability of oil to lubricate the crankshaft. At a very minimum, you have to first eliminate the coolant in the oil. I would change the rod and main bearings. The crankshaft should be measured (miked) to see how out of round it is.
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Posted By: Lars(wi)
Date Posted: 01 Feb 2026 at 2:58pm
Ouch!! ------------- I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science. |
Acguywill wrote: