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New to me H3

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=102038
Printed Date: 20 Jul 2025 at 3:29am
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Topic: New to me H3

Posted By: TBS
Subject: New to me H3
Date Posted: 16 Feb 2015 at 11:42am

Hello, I recently bought a 63(??) H3. On the test drive on flat land the machine moved well. It was tansported to my land which is very hilly. I see now The machine does not climb well at all nor does it push much dirt. When transporting the machine, the machine slid across a flat bed wecker and hit the side pertty hard. Is it possible the track is jammed? Brakes? What can I look at to see if there is anything stuck or out of place?

Replies:

Posted By: Coke-in-MN
Date Posted: 16 Feb 2015 at 11:59am

Does it drive on both tracks . so if clutch is pulled and brake applied on that side will machine move in direction of pulled clutch ?

It's a small machine and pushing more than a few yards of soft material is going to be a job for it . Also skill in operation is another factor , You take a small bite and then increase load as you move , Not try to power into what you are trying to move .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: Randaleky
Date Posted: 16 Feb 2015 at 12:02pm

MAKE SURE THE TRANNY IS IN FIRST GEAR. THEY WILL NOT CLIMB HILL OR PUSH VERY WELL THE OTHER GEARS.

Posted By: TBS
Date Posted: 16 Feb 2015 at 1:15pm

Thanks for your response. Both sides do work and function mechanically. The right is stronger than the left. I figured that was a function of age of the clutch. It was indeed in first gear when climbing and pushing dirt. Even then it seemed weak. I stalled the engine while pushing a fallen tree. It just seems like there is a drag. Is it possible that the engine is the weakness? Or if the motor timing is off? I know enough to understand only the basics. Love the machine and the idea of owning the classic. Having this resource is awesome.

Posted By: TBS
Date Posted: 16 Feb 2015 at 1:16pm

Thanks for your response. It was in first gear. It still seemed weak like there was a drag.

Posted By: Dozer
Date Posted: 16 Feb 2015 at 3:33pm

It takes a lot of power to go up a hill. Your H3 is a small machine. See if it will coast downhill with the blade up. Check out the ignition system.

Posted By: TBS
Date Posted: 16 Feb 2015 at 4:01pm

Thanks for the input. I will check it out.

Posted By: Ages Cat
Date Posted: 20 Feb 2015 at 3:23pm

We have a 1968 HD3. If you have a shuttle, it is probably slipping. The only real fix is split the tractor and replace the clutch discs. I thought our steering clutches were slipping, then the engine clutch, but it turned out to be the shuttle. The clutch pack is shimmed and it is essential that the measurement of the shims is followed. Please assure that you have a copy of the Maintenance Manual as the instructions for setting up the shuttle clutch pack are there. This is the same as a Power Director clutch. I have talked to several people who have H/HD-3's sitting because of thsi issue.

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Curt Anderson
HD3, HD5B, HD6AG,HD6B dozer, I-400,615, 616,620,720,ACP25 lift truck, 1956 D Grader, AC 540 loader, AC #84 plow, Simplicity tractors, Agco MT225, Agco 2025,