Construction and other equipment - H3 149 engine froze

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H3 149 engine froze

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=118798
Printed Date: 27 Jul 2025 at 12:38pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: H3 149 engine froze

Posted By: badtrack
Subject: H3 149 engine froze
Date Posted: 10 Feb 2016 at 9:20am

Fly wheel locks up when freezing temps out. Runs OK when not freezing out. Cap on exhaust pipe. Where could water be getting in?

Replies:

Posted By: DMiller
Date Posted: 10 Feb 2016 at 10:18am

I would more suspect a valve hanging in a guide or a rocker arm trying to seize in the cold, will stop one solid. These are torque converter tractors? Could also be water in the converter housing if is.

Posted By: badtrack
Date Posted: 10 Feb 2016 at 11:38am

Thanks for the tip. Next week is going to get above freezing so I may see if it unlocks by itself again before I inspect the valves.

Posted By: orangeman
Date Posted: 10 Feb 2016 at 4:05pm

Pull the plugs and see if the engine rolls.

Potential head gasket leak into cylinder(s)? What color is the exhaust when it is running?

Internal combustion engine compresses and ignites vapor - cannot compress liquid or watering entering combustion chamber.

Before tinkering with Valves, pull the valve cover, observe the rockers while the engine is rolled over by hand. See if any of the valves are hanging in the valve guide.

Good Luck...Orangeman

Posted By: Lee Bradley
Date Posted: 10 Feb 2016 at 6:10pm

Water in the bottom of the bellhousing?

Posted By: badtrack
Date Posted: 16 Feb 2016 at 1:17pm

Yesterday was a high of +31. Warmed the block above freezing. Took tappet cover off and could move all the valves a little. ( none stuck) still could only move the flywheel 1\8 back and forward. Bumped it with the starter and it came free. Ran it for 45 minutes pushing snow.carb has issues. This morning the engine is stuck again???.

Posted By: DMiller
Date Posted: 16 Feb 2016 at 2:16pm

Engines generally do not freeze then unfreeze, I am leaning to water inside somewhere rocking up when cold.

Posted By: JC-WI
Date Posted: 16 Feb 2016 at 7:03pm

Water in the clutch housing.. or some where else??? water in the hydraulics/ pump?

-------------
He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."

Posted By: badtrack
Date Posted: 17 Feb 2016 at 7:52am

After pushing snow I drove it up on planks and blocked the clutch disingauged. I will drop the belly skid plate and get a look in the clutch adjusting port. When I got this unit it had sat for years and mice filled the flywheel housing with all of what they do in their nests. Took days to free the clutch plate from the spline. I'll report what I may find. Don't have a heated place to work so l'll pick warm days.( +20's F)

Posted By: badtrack
Date Posted: 17 Feb 2016 at 1:55pm

Got the skid plate down and removed the clutch adjusting plug. About 3/8inch of ice in the bottom. Took a propane torch to it and it freed right up. I had parked it with the nose down a little which didn't help any. Now I have the nose up about 5 degrees got most of the water out. Thanks so much for all the great tips. Now I can use it and work on the carburetor problem. Acts like the float hangs up at times.