Farm Equipment - Late 200/7000 brakes

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Late 200/7000 brakes

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=35828
Printed Date: 06 May 2025 at 11:42am
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Topic: Late 200/7000 brakes

Posted By: Hurst
Subject: Late 200/7000 brakes
Date Posted: 21 Aug 2011 at 10:32am

One more question on the 7000. My brakes both act differently, and I am not sure which is correct. My left brake will nearly lock up the wheel without much force at all on the pedal, almost like an "on-off" switch when you hit a certain point in the pedal travel. The other brake is much smoother, but it will not lock up the wheel. I took it apart to clean the balls and ramps, and the balls are still round. I am not sure if the ramps are worn or not, but I could make the assembly spin out by hand with the springs off of it. I didn't take off the left side because I was assuming that this was how the brakes were supposed to be (take very little effort to lock up the wheel). The seals were replaced a couple years ago and I didn't have any signs of leakage, but one side did have some leakage before the seals were done. The discs on the right assembly that I took apart seemed like they had plenty of life left in them. The ribs were still clearly defined in the disc. I know the plates are pretty pricy, and after spending quite a bit on the powershift rebuild and needing to buy fluids to give the tractor it's yearly service, I am a little short on cash to buy new discs, but if it's something that can be fixed without expensive parts, I'll give it a try.

Hurst

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1979 Allis Chalmers 7000
5800 Hours

Replies:

Posted By: Burgie
Date Posted: 21 Aug 2011 at 10:39am

I`D try roughen the disc up.

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"Burgie"

Posted By: Burgie
Date Posted: 21 Aug 2011 at 10:40am

And you are right about pricey!!!!!!!!!

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"Burgie"

Posted By: DougG
Date Posted: 21 Aug 2011 at 3:49pm

My 200 done that , reworked the brakes they were great - a year later one would lock up , had to stand on the other to get any response ; another awful AC design

Posted By: ranger42
Date Posted: 22 Aug 2011 at 2:41pm

Got Kevlar coated brake discs from South Bend Clutch in South Bend, In. years ago for my 210. cured the problem.

Posted By: Hurst
Date Posted: 22 Aug 2011 at 4:00pm

That might be something to look into. I have a clutch shop locally that does brake discs, I just wonder if he would mess with the old linings, as I believe they're asbestos based and are bonded onto the center disc with the splines...

Hurst

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1979 Allis Chalmers 7000
5800 Hours

Posted By: ranger42
Date Posted: 22 Aug 2011 at 4:53pm

South Bend Clutch did ask for my "old" cores, but sent me brand new disks. they gave me a few bucks for the old ones I dont remember how much. I do know the new ones were not cheap, but at least it fixed the problem.