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wlambs 
Bronze Level
Joined: 18 Jun 2018
Location: ga
Points: 67
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 Topic: roller pin removal
Posted: 01 Oct 2023 at 1:32pm |
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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8070nc
Silver Level Access
Joined: 21 Mar 2019
Location: North Carolina
Points: 498
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Posted: 01 Oct 2023 at 2:17pm |
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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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8070nc
Silver Level Access
Joined: 21 Mar 2019
Location: North Carolina
Points: 498
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Posted: 01 Oct 2023 at 2:19pm |
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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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wlambs
Bronze Level
Joined: 18 Jun 2018
Location: ga
Points: 67
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Posted: 01 Oct 2023 at 3:44pm |
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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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8070nc
Silver Level Access
Joined: 21 Mar 2019
Location: North Carolina
Points: 498
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Posted: 01 Oct 2023 at 5:24pm |
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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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AC7060IL
Orange Level
Joined: 19 Aug 2012
Location: central IL
Points: 3320
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Posted: 01 Oct 2023 at 6:11pm |
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238 orange? Or 238 black?
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wlambs
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Joined: 18 Jun 2018
Location: ga
Points: 67
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Posted: 01 Oct 2023 at 7:29pm |
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black adjustable row
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185,6080,6060,72 allcrop, roto baler
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AC7060IL
Orange Level
Joined: 19 Aug 2012
Location: central IL
Points: 3320
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Posted: 02 Oct 2023 at 7:28am |
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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
Edited by AC7060IL - 02 Oct 2023 at 7:54am
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wlambs
Bronze Level
Joined: 18 Jun 2018
Location: ga
Points: 67
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Posted: 03 Oct 2023 at 6:36am |
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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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