Allis B new main bearing Question
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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=167555
Printed Date: 27 Apr 2024 at 5:45pm
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Topic: Allis B new main bearing Question
Posted By: gman54313
Subject: Allis B new main bearing Question
Date Posted: 19 Jan 2020 at 5:51pm
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I finally got some time to mic my newly ground crank and the ID of my new .030 bearings and noticed that all the bearing halves with the exception of the one with the thrust have the word upper stamped on them? Is this right? Should I have other halves stamped lower? I will be contacting the supplier tomorrow. But thought I would but the question out there. I did verify that the part number on the bearing is correct .030 but the stamped "upper has me stumped. I can say the ID of the two "uppers" put together measured 2.1966 top to bottom and my main journal is at 2.219 Greg 
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Replies:
Posted By: Dick L
Date Posted: 19 Jan 2020 at 6:05pm
Just one half going in as in the picture. Once you start to install the crankshaft you will understand. 
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Posted By: Boss Man
Date Posted: 19 Jan 2020 at 7:10pm
| Main difference between the uppers and lowers is the drilled oil hole. Make sure the hole matches the hole in the block and you wont have a problem. |
Posted By: gman54313
Date Posted: 19 Jan 2020 at 8:37pm
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Thank you. I was able to find out the part number is the same for the upper and lower bearing halves except for the main front lower. I just need to get my shims and proceed. Thanks Greg |
Posted By: Gerald J.
Date Posted: 19 Jan 2020 at 8:50pm
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The shop manual may have a cue. http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf" rel="nofollow - http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf Gerald J. |