Farm Equipment - Allis chalmers CA

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Allis chalmers CA

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=66599
Printed Date: 06 Sep 2025 at 10:26am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis chalmers CA

Posted By: Doyle B(NY)
Subject: Allis chalmers CA
Date Posted: 09 Mar 2013 at 12:29pm

Hey guys im still in the process of overhauling my ca and i got the crank back from the machine shop with bearings so I thought i'd get it in. Thats when problems begain. I put it in and torqued the main caps to 80ft lbs like my manual said and i couldnt budge the crank at all. So I then remembered that well this is a shimmed crank so i got shims and shimmed it up so that all 3 main clearences were .0015 as my manual said. I then torqued the caps back down and the crank now turns however it turns pretty hard, you need a bar to move it. I dont really want to add more shims because the clearence would be larger then specified. Just wondering what you all thought and, how easy should it turn when it is in properly.

Thanks Brandon Doyle

Replies:

Posted By: JoeO(CMO)
Date Posted: 09 Mar 2013 at 12:52pm

Did you by chance get the front and center bearing caps reversed?

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Posted By: Allis-chalmers wd45
Date Posted: 09 Mar 2013 at 12:53pm

Did you use assembly lube or oil?

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1946 "C"
1956 "WD45"
1965 "D17" Series IV
1979 185 factory ROPS
deutz allis 385 planter

Posted By: Doyle B(NY)
Date Posted: 09 Mar 2013 at 3:02pm

I did use oil and im pretty sure i didnt get the caps reversed but id better check.

Posted By: Dick L
Date Posted: 09 Mar 2013 at 3:25pm

I know what the manual says but but rule of thumb on that engine is .002 - .0025. This is where the measuring details come in to effect.

You need now to find out exactly where your at. To that you measure both the crankshaft OD and the bearing ID then subtract the OD from the ID. How I do it in the pictures at the link.

Without measuring you are assuming that every thing was as on the package. Since it caused it to bind the way it is you can probly assume that it was not.

http://public.fotki.com/DickL/allis_chalmers_engi/filing-main-and-rod/" rel="nofollow - http://public.fotki.com/DickL/allis_chalmers_engi/filing-main-and-rod/

Posted By: Mrgoodwrench
Date Posted: 09 Mar 2013 at 3:28pm

if you think its shimmed right you can plastiguage it.

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There are 3 ways to do job GOOD, FAST, CHEAP. YOU MAY CHOOSE 2. If its FAST & CHEAP it won't be GOOD, if it's GOOD & CHEAP it won't be FAST, and if its GOOD & FAST it won't be CHEAP!!!!