7050 rear diff sight glass replacement or seal
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=207567
Printed Date: 28 Jul 2025 at 11:23am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7050 rear diff sight glass replacement or seal
Posted By: MT7050
Subject: 7050 rear diff sight glass replacement or seal
Date Posted: 26 Jul 2025 at 12:41pm
How do I replace sight glass in rear diff? or what is best way to seal? It looks like previous owner tried some white silicone but not working.
Also looks like it has water in it - need to do a complete oil change and filter replacement.
thx
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Replies:
Posted By: injpumpEd
Date Posted: 26 Jul 2025 at 1:04pm
A socket fits, I think 3/4" and it uses an oring to seal it. They are on the AGCO Parts Books breakdowns. Pretty sure they are pipe thread, and new ones are available still.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Posted By: SteveM C/IL
Date Posted: 26 Jul 2025 at 11:36pm
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if like 8000's it is now plastic and uses an oring. It is NPT
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Posted By: orangereborn
Date Posted: 27 Jul 2025 at 1:15am
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If you are talking about the sight glasses on a 7000 series on the left side of the rear end housing, I removed both glasses and put a elbow fitting with I believe half inch thread and a hose barb. Point of them both up and looped a plastic tube between the two of them. Choose a tube size that bends gently for your choice of setup.. I chose plastic fittings so as to have a more flexible tight/ stopping position. Now you have a sight gauge that works for you.. Dale
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Posted By: DougG
Date Posted: 27 Jul 2025 at 6:19am
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Thats good thinking Dale,,
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Posted By: MT7050
Date Posted: 27 Jul 2025 at 11:01am
ok thanks for replies. I will be up to ranch tomorrow and try socket. when I looked before it just seemed like the plastic/glass bulb was just in the housing without seeing any hex fitting but one does have bunch silicone on it...
And yes I am talking about 2 sight glasses on side of rear diff housing.
Tim
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Posted By: injpumpEd
Date Posted: 27 Jul 2025 at 11:16am
It's kind of a round dome shape, but has 2 small ears on it that fit in the v of the socket. You don't tighten much, so not a lot of socket engagement is needed.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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