Farm Equipment - Ac 200 heard up

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Ac 200 heard up

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=149049
Printed Date: 22 Aug 2025 at 12:25pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Ac 200 heard up

Posted By: DLPETERS
Subject: Ac 200 heard up
Date Posted: 01 Apr 2018 at 6:39pm

I just bought an allis chalmers 200 that before I bought it I was told it probably needed a head gasket because it over heats but only under load !! I drove it home which took 3 hours and the water temp just barely reached the beginning of the green on an AC water temp guage ! There is no visible leakage on the head gasket on the out side and the tractor runs great ! Does anyone have any ideas ?
DLPETERS

Replies:

Posted By: darrel in ND
Date Posted: 01 Apr 2018 at 6:46pm

Yeah, if it ain't broke; don't fix it! But seriously, watch for excess pressure, or bubbling in the radiator, look for anti-freeze in the oil, and oil in the anti-freeze. Monitor everything closely, and run it. Darrel

Posted By: grinder220
Date Posted: 01 Apr 2018 at 8:14pm

Welcome to the forum Don,you must have bought the one from Baldwin? If the head gasket is leaking it will cause the radiator to bubble over under load. The turbo builds boost in the cooling system when under load. My 8550 did the same thing last year. No trace of coolant in the oil but get it under some pull and out the cap it goes.

Posted By: bigal121892
Date Posted: 01 Apr 2018 at 8:45pm

Sure it's not a dirty radiator? My experience with blown head gaskets, the engine will get hot regardless of load, as hot gasses are getting into the cooling system. If you drove it for three hours, and it didn't get hot, or blow coolant out the radiator, I would be looking else where. Just my two cents.

Posted By: Mikez
Date Posted: 01 Apr 2018 at 9:03pm

Our 200 did the same thing. We took the bottom an top hosees off and the radiator was pluged. We ran garden hose into the bottom to like back flush it. Took some time to get it opened up. We took the thermostat out so that it would flush around a bit. And put it back in. Works fine now.
And welcome to the forum

Posted By: MACK
Date Posted: 01 Apr 2018 at 9:19pm

Better chance of dirty radiator inside or thermostat than head gasket. MACK

Posted By: DanWi
Date Posted: 01 Apr 2018 at 10:16pm

Are the fan belts tight enough and not worn out and running on the bottoms of the pulleys?

Posted By: SteveM C/IL
Date Posted: 01 Apr 2018 at 10:27pm

Either way,I would pull the radiator and go get it boiled and checked out by a competent radiator shop.Old enough to need it!

Posted By: drobCA
Date Posted: 01 Apr 2018 at 10:30pm

welcome and thanks for asking a question that others like me can learn from.

these guys DO know their stuff!

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3 Ford 8N's I loan to neighbors, but the '52CA, '41B and little B1 I do not.

Posted By: JayIN
Date Posted: 02 Apr 2018 at 8:01am

Yeah. I would boil the radiator first and go from there. 200 is a great tractor!

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sometimes I walk out to my shop and look around and think "Who's the idiot that owns this place?"

Posted By: HudCo
Date Posted: 02 Apr 2018 at 9:23am

thats why you only use disttiled water when you change coolant

Posted By: DLPETERS
Date Posted: 02 Apr 2018 at 11:06am

Yes it is the one from Baldwin ! It sat for 15 or 16 years ! And yes I'm new to the forum and already can see there is a wealth of information on it that's awesome