175 Block heater
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=129250
Printed Date: 15 Jun 2025 at 7:10am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 175 Block heater
Posted By: dfh9036
Subject: 175 Block heater
Date Posted: 26 Sep 2016 at 4:07pm
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I have a 1979 Allis Chalmers 175 diesel that has a Kat's external block heater on it that has stopped operating. I ordered a new block heater, part #0256123 and it just came today. My question is where does it go? Do I have to remove a freeze plug to install it, and if so which one? Does it go on the right side or left? I have a 185 which has the internal block heater on the right side but it seems to be installed in a different manner than would be on the 175. Any help, photos of yours etc. would be greatly appreciated. Thanks.
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Replies:
Posted By: dfh9036
Date Posted: 26 Sep 2016 at 4:09pm
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Forgot to add, I did look at the parts book and the service manuel and neither were of any assistance.
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Posted By: dfh9036
Date Posted: 27 Sep 2016 at 11:07am
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Okay, I have determined that since I am converting from a circulating heater to a frost plug heater I do need to remove one of the frost plugs. Does it matter which one I install the heater in? Thanks.
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Posted By: injpumpEd
Date Posted: 27 Sep 2016 at 12:34pm
Usually the catalog tells you which freeze plug location it's best suited for. Yes, you will have to remove a freeze plug. Did the catalog show it for a Perkins 248?
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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: dfh9036
Date Posted: 27 Sep 2016 at 12:41pm
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No it did not. It just showed the part on the corner of the page with no relation to where it mounts on the engine. Other than listing the part number there was no other information.
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Posted By: farmtoybuilder
Date Posted: 27 Sep 2016 at 12:48pm
Some used screw in type just above starter and others in-between starter if soft plug type.
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5 different TT-10's,5 TT-18's Terra Tigers,B-10,2 B-207's,B-110,2 B-112's,HB-112,B-210,B-212,HB212,2 Scamp's & Homilite T-10. Still hunting NICE HB-112 & anything Terra Tiger & Trailers for them.
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Posted By: injpumpEd
Date Posted: 27 Sep 2016 at 2:14pm
I just looked in the Kats catalog, and they show a freeze plug style block heater, goes in Right Rear corner of block, and it's to be installed at the 12 O'Clock position. Not sure yours is exactly the same, but it's usually a universal deal.
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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: dfh9036
Date Posted: 27 Sep 2016 at 7:32pm
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Thanks for the input. I did talk to an AGCO tech who said it should be installed on the left side of the block right by the starter. I'm assuming it should be in the 12 o'clock position. Any thoughts?
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Posted By: sparky
Date Posted: 27 Sep 2016 at 9:09pm
That's where mine is.
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It's the color tractor my grandpa had!
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Posted By: dfh9036
Date Posted: 27 Sep 2016 at 9:38pm
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