Platigage Reading?
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=170222
Printed Date: 15 Sep 2025 at 7:19am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Platigage Reading?
Posted By: Larry Miller
Subject: Platigage Reading?
Date Posted: 17 Apr 2020 at 3:31pm
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I have a early 57 D 17 down to it's under ware and have a reading of .002 plastigage reading on no. one rod cap. I don't have a reference - is this good bad or maybe for bearings? Larry Miller
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I used to be young and stupid, now I am not young anymore.
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Replies:
Posted By: Boss Man
Date Posted: 17 Apr 2020 at 3:51pm
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I & T manual says .001 -.003 for a gaser, so your good
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Posted By: Bill_MN
Date Posted: 17 Apr 2020 at 3:53pm
Boss Man you just beat me to it. Sounds dead on, .001-.003 is spec per A-C shop manual.
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1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow
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Posted By: Larry Miller
Date Posted: 17 Apr 2020 at 4:30pm
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Thanks guys, good news for me.
Miller
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I used to be young and stupid, now I am not young anymore.
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Posted By: Dusty MI
Date Posted: 17 Apr 2020 at 6:02pm
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Now come and check my G.
Dusty
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917 H, '48 G, '65 D-10 series III "Allis Express"
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Posted By: DrAllis
Date Posted: 17 Apr 2020 at 7:04pm
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Check the center main bearing !! especially between the #2 and #3 arms. That's where they wear !!
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Posted By: Larry Miller
Date Posted: 18 Apr 2020 at 8:06am
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Thanks, Dr A - I was not going to check the main until I saw your post. It is also .002 like the first rod cap - I assume that is also within specks and not in need of replacement? Miller
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I used to be young and stupid, now I am not young anymore.
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Posted By: Boss Man
Date Posted: 18 Apr 2020 at 8:56am
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Mains are .0014- .0035 so your good. I did a engine in a red tractor that was just one main was bad. I wasn't going to check all the bearings but at the last minute decided to. Good thing because I saved the customer some big money
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