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Final Drive top fill plugs for HD16

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=168425
Printed Date: 24 Aug 2025 at 7:08am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: Final Drive top fill plugs for HD16
Posted By: jerbob
Subject: Final Drive top fill plugs for HD16
Date Posted: 18 Feb 2020 at 9:06am
Hello Everyone.

This past fall while my baby was sleeping outside after a workout, some jerk took off a bunch of parts. I was able to replace everything except 2 steel plugs that go on the top of the final drive housing for filling with oil.

I don't have a replacement one for measurement but the female opening is roughly 1.5" and looks to be fine thread. I have gone to box store hardware section and TSI as well as Blains Farm Fleet. Nothing seems to fit it. Either a hair too big or just a bit too small. What the heck size are these plugs for gosh sake.

Also anyone have a parts tractor with a pair of these they would consider selling. Either parts or advise as to a replacement part would be greatly appreciated.

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HD16DC, Bobcat 863 Turbo, Oliver 1855, John Deere 855,



Replies:
Posted By: DMiller
Date Posted: 18 Feb 2020 at 12:50pm
Similar to this Plug in center tube?



Posted By: steve(ill)
Date Posted: 18 Feb 2020 at 1:38pm
Way back a lot of plugs on farm equipement were pipe plugs... Seems like a lot of the Construction Manufactures used more of a standard bolt thread.

They made plugs of 1 inch, 1.25 inch 1.5 inch.. etc, and i THINK they were all 12 threads per inch....some had an o-ring seal on them.


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Like them all, but love the "B"s.


Posted By: DMiller
Date Posted: 18 Feb 2020 at 2:51pm
Will root thru the Donor tractor spares and see what I have let to measure threads. Seal with a Washer.


Posted By: DMiller
Date Posted: 23 Feb 2020 at 4:19pm
These are what I have and can sell. Threads measure 1.5” across.



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