Bearing material in oil
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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=140584
Printed Date: 18 Sep 2025 at 11:00am
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Topic: Bearing material in oil
Posted By: ksbowman
Subject: Bearing material in oil
Date Posted: 19 Jul 2017 at 5:24pm
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I am 67 yrs. old and have been working on equipment and vehicles since I was 8-10 yrs. old starting with my father. I have never had a problem with rod or main journal bearings going out although I've overhauled a lot of motors replacing them in the process. Common knowledge tells me if a motor is having bearing problems you should be able to drop the oil and there should be some shavings or bearing residue in the oil or the bottom of the pan. Is my thinking correct? Thanks
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Replies:
Posted By: HD6GTOM
Date Posted: 19 Jul 2017 at 5:28pm
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Yes but sometimes it is impossible to see. We started oil sampling in the 1970's. Needs to be done every time you change oil.
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Posted By: DougS
Date Posted: 19 Jul 2017 at 5:52pm
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Depends on how large the material is. When doing an oil sample there may be traces amounts of the metal in the oil. That's normal, within bounds. Shavings or chips on the other hand....
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Posted By: steve(ill)
Date Posted: 19 Jul 2017 at 7:50pm
Why do you believe you have a bearing problem ?????????
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Like them all, but love the "B"s.
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Posted By: Gary(WI)
Date Posted: 19 Jul 2017 at 8:28pm
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Cut the filter apart there will be filings for sure in it if it has bearings issues
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Posted By: ksbowman
Date Posted: 19 Jul 2017 at 9:35pm
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Steve, I don't think so. I had an issue last winter with my 170 diesel. When I had it warming up (it was below zero out) I noticed I had a leak at the valve cover and it was puffing smoke/vapor and then I had a high pitched squeal start so I shut it off. I have a 180 and a 190 so I just used them and never messed with the 170 (170 has always been my go to Tractor). A couple weeks ago I fixed the valve cover gasket and loosened the fan belt and the squeal wasn't there when I started it up (started easy). The engine seemed noisy. It has always been noisier than the 180 D. So I thought about the squeal last winter and thought " I hope it didn't spin a bearing". Today I drained the oil and when I drained it I stretched a white T shirt over the 5 gallon bucket so I could see if anything ill regular came out and it was clear of any shavings or color. Checked the plug and all that was in it was a dead fly and 1 very small piece of metal. Pretty sure my pessimistic attitude is creating a problem where there isn't any. To be on the safe side I wanted to look for shavings in the oil.
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Posted By: ksbowman
Date Posted: 19 Jul 2017 at 9:37pm
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Gary, I'll do that tomorrow. I even stuck my finger up the drain hole onto the bottom of the pan, but didn't get anything either.
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Posted By: BigBadAllis
Date Posted: 20 Jul 2017 at 8:35am
You won't be able to visually see the wear material unless there's very large pieces. The bulk of the wear material will be from 0-10µm (microns) and not visible. The only way to know is to perform an oil analysis which will provide all of your wear metals in ppm as well as a lot of other information. I own an oil analysis laboratory and willing to run analysis for any of the AC Forum members at cost. I got into this business because of my love for working with equipment. Long time AC guy from a family dairy farm in MI will all AC's
https://apexoillab.com/" rel="nofollow - https://apexoillab.com/
(616) 328-6672 and ask for Jason
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