roller pin removal
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=197472
Printed Date: 10 May 2025 at 4:35pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: roller pin removal
Posted By: wlambs
Subject: roller pin removal
Date Posted: 01 Oct 2023 at 1:32pm
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Tring to get pin out of snaping roll on 238 corn head so i can replace needle bearing used punch and hammer got it to move very little any suggestions not sure whether to use heat on pin
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185,6080,6060,72 allcrop, roto baler
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Replies:
Posted By: 8070nc
Date Posted: 01 Oct 2023 at 2:17pm
Its been 30 years since I worked on one of those but it seems like those pins were tapered and only came out one way
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: 8070nc
Date Posted: 01 Oct 2023 at 2:19pm
If its a hollow pin thats not it. If its a solid pin its a possibility
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: wlambs
Date Posted: 01 Oct 2023 at 3:44pm
it is solid and tapered a little on one end
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185,6080,6060,72 allcrop, roto baler
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Posted By: 8070nc
Date Posted: 01 Oct 2023 at 5:24pm
I meant its tapered thru the whole bore
If it is a tapered pin it will be smaller on one end than the other
Kind of hard to tell sometimes if it got bradded when it was driven in
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: AC7060IL
Date Posted: 01 Oct 2023 at 6:11pm
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238 orange? Or 238 black?
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Posted By: wlambs
Date Posted: 01 Oct 2023 at 7:29pm
black adjustable row
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185,6080,6060,72 allcrop, roto baler
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Posted By: AC7060IL
Date Posted: 02 Oct 2023 at 7:28am
Gleaner Black Cornhead Parts book form 9004918, March 1977 lingo as follows:
POINT(cast cone shaped spiral?)
EXTENSION (cast transition behind needle bearing housing placed before blade set).
Try heating snapping roll point’s (spiral cone?)pin(groove 5/16”-2 1/8”)to cherry red then hammer/punch out? The last one I successfully hammered pin out without any heat, I used a stout 1/4" punch to move pin back & forth while applying penetrating oil onto/into pin & hole. That took time. Even had a helper manually wrench cornhead roll 180 degrees by using an open end wrench on hex drive shaft, as I stood between row frames.
Important note: If removing both rolls entirely per row, keep points/extensions properly matched.
LEFT POINT is long & is matched to a short extension.
RIGHT POINT is short & is matched to a long extension.
Needle bearing part # 560985
Needle seals(2), 560254
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Posted By: wlambs
Date Posted: 03 Oct 2023 at 6:36am
thanks for answers heat and air chisel worked good. was afraid to put heat on it at first
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185,6080,6060,72 allcrop, roto baler
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