262 d energy cell cap thread size
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=208660
Printed Date: 27 Oct 2025 at 6:37pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 262 d energy cell cap thread size
Posted By: HudCo
Subject: 262 d energy cell cap thread size
Date Posted: 24 Oct 2025 at 10:54pm
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what are the thread size and pitch for the energy cell caps 1/4 by coarse or fine ?
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Replies:
Posted By: HudCo
Date Posted: 25 Oct 2025 at 7:06pm
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their can only be about three or four threads cant tell what to tap with having sixty five yaers of paint and rust ant dirt pluging the holes
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Posted By: thendrix
Date Posted: 25 Oct 2025 at 8:23pm
If it's a straight 1/4" thread it's either 20 TPI for coarse or 28 TPI for fine. If it's 1/4 pipe thread it's tapered and, if I remember right, 14 or 16 TPI(?)
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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan
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Posted By: RedHeeler79
Date Posted: 25 Oct 2025 at 8:47pm
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Would like to answer your question with certainty, but I can’t tell for certain. I have 2 sets of them, one set has no holes, the other set is so rusty, crusty and eroded that its hard to tell. It looks more like 1/4-20, but seems like they would have made it fine thread instead since the holes are so shallow. I did get a 1/4-20 bolt to kinda sorta start in the best one of the threaded set of caps… I ‘think’ they’re coarse thread. Definitely not 1/4 pipe, the holes are too small even for 1/8 pipe…
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Posted By: Gary Burnett
Date Posted: 26 Oct 2025 at 7:17am
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Go to a hardware store and try different nuts on the bolt until you find one that works.
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Posted By: HudCo
Date Posted: 26 Oct 2025 at 11:55am
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they are 1/4x20, i would have thouhgt fine thread to get more threads. i took a 1/4 x20 tap and ground it off flat when its bottomed you will only get three threads. i put a grade 8 bolt on the end of a slide hammer four came out decent and two had to have a lot off beating around the edges and heat i, will probley have to replace those caps because it made little bulges bad enought they probley wont lap back in
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