Farm Equipment - How to use radiator shutters?

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How to use radiator shutters?

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=129476
Printed Date: 23 Oct 2025 at 12:17pm
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Topic: How to use radiator shutters?

Posted By: CrestonM
Subject: How to use radiator shutters?
Date Posted: 01 Oct 2016 at 9:33pm

This will make me sound pretty stupid, but how do you properly use shutters? I started with them shut until it got to temp, then I opened them. After a few minutes the temp was down in the "cold" zone. I shut them again till it was in the green, then I only opened them 1/3 open. That only made it get cold slower.

What are you supposed to do?

Replies:

Posted By: Chalmersbob
Date Posted: 01 Oct 2016 at 9:41pm

Your on the right track. Just don't open them so much until you are working the tractor and the temp starts into the red, then start to open them slowly until you get the opening and the temp balanced. LOL Bob

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4 B's, 1 C's,3 CA's, 2 G's WD, D14, D15, B-1, B10, B12, 712S,

Posted By: Ken in Texas
Date Posted: 02 Oct 2016 at 8:40am

The main purpose for shutters, I think, was to get the engine up to operating temp quickly in freezing cold weather and maintaining temp at a desired level.
In hot weather just leave them wide open.

Posted By: DanD
Date Posted: 02 Oct 2016 at 9:53am

The proper way to use them is to open them up and then install a thermostat if the tractor doesn't have one! In all seriousness they were useful on an engine burning low octane fuel or an engine running light loads in very cold weather. Orherwise they were used as you are doing in engines that didn't have a thermostat.

Posted By: Brian Jasper co. Ia
Date Posted: 02 Oct 2016 at 10:14am

For almost 20 years that's how my CA was run. You just have to get a feel for how far open to run them. Light loads like just riding about one or two turns open was all mine needed. When the water pump started leaking a year ago I finally put a thermostat in it.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford