Farm Equipment - Brake Job

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Brake Job

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=194870
Printed Date: 23 Aug 2025 at 9:32pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Brake Job

Posted By: jrbynf
Subject: Brake Job
Date Posted: 28 Apr 2023 at 1:38pm

Just finished a brake job on my 180. All new aftermarket parts. Brake is still locking up intermittently. I check all the specs when installing. Any idea? I used the 1 inch balls which were suppossed to be correct. Thank you all

Replies:

Posted By: DrAllis
Date Posted: 28 Apr 2023 at 2:50pm

What was the air gap between the disc lining and the sides when assembled ?? Minimum .040" by the book.

Posted By: jrbynf
Date Posted: 28 Apr 2023 at 3:04pm

It was .05. I removed all of the shims

Posted By: DSeries4
Date Posted: 28 Apr 2023 at 4:44pm

You need the shims! Clearance between the drum and bearing carrier should be between 30 and 80 thou (going from memory). It's all in the service manual. Put the shims back in and check your clearances.

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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080

Posted By: DrAllis
Date Posted: 28 Apr 2023 at 6:03pm

I will shim as tight as .020" and no tighter. A little lube on the axlke splines and a layer of antiseize or grease on the ball pockets are always good. NEW drum springs and band springs ??

Posted By: jrbynf
Date Posted: 28 Apr 2023 at 6:36pm

I lubricated the balls with wd40. Everything was new. I think I’ll take apart again and check the measurements.

Posted By: DrAllis
Date Posted: 28 Apr 2023 at 6:45pm

Check the gap with a feeler gauge thru the top opening while it is still ASSEMBLED !!! Shove the drum to one side and measure the air gap on the other side. You never remove shims. That can only make things looser unless you have replaced hard parts.