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AC HD4 vs. 653 Power Steering
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Joined: 23 Feb 2023
Location: California
Points: 10 		Post Options Post Options   Thanks (1) Thanks(1)   Quote sresites Quote  Post ReplyReply Direct Link To This Post Topic: AC HD4 vs. 653 Power Steering
    Posted: 23 Feb 2023 at 9:46pm
New to this particular site. Been interested to learn more about AC & its history.
Was looking at the HD4 & 653 power steering setup. Confused with the 653’s lack of power steering clutch levers.
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orangeman View Drop Down
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Points: 1764 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 24 Feb 2023 at 8:02am
Power Steering or ""Foot steer" was optionally available at extra cost from the factory on the 650 series machines. 

The 1975 parts manual for the H-4 and HD4 machines - which had been out of production by that time - shows only steering levers - brake control with no hydraulic foot steering option.  

At one point, the Allis Chalmers Industrial Tractor Division released a kit to allow IT dealers or owners to convert a machine from hand levers to (hydraulic foot control). 

 With the passage of 50 years it is plausible that on the HD4 (pictured above) that either the dealer or a customer  obtained a conversion kit and installed it or converted it themselves.  The latter is probably a long shot - but could be done.

~ Orangeman
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sresites Quote  Post ReplyReply Direct Link To This Post Posted: 24 Feb 2023 at 8:10am
Thank you.
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Points: 41609 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 2023 at 2:41pm
When I had my HD4 with lever steer and also my HD5G with lever steer , the dang brake position of the HD4 always got my feet confused , also when adding in the decelerator pedal to the problem . As both brakes were next to each other you used your left foot for either brake and right foot for decelerator, then when you forgot or used right foot on brake , you had to use lever to stop and untangle your foot position.   It seemed both hands and feet were always busy when working in some places . 
 HD5G and even my HD5B seemed easier to run . Then I bought the FD5 and least it had 2 decelerators and the foot steer made it easy to use - also the power shift worked a lot better than just the fwd/rev lever as you had speed control also in the power shift .
 Sold the HD4 and kept the HD5G , sold the HD5B and replaces it with skid loader and then the FD5 dozer . 
 My AC 715B TLB had more push power than the HD4 and actually easier to operate than the HD4   


Edited by Coke-in-MN - 27 Feb 2023 at 2:46pm
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."
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Points: 688 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ages Cat Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 2023 at 3:01pm
I have pedal steer on my 655. Leaves hands free for transmission/reverser and bucket control. It was a great idea to utilizes that setup on these machines.
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,
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Points: 1764 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 2023 at 12:36pm
Curt:  If memory serves the foot steer setup was also available on the Caterpillar 900 series crawler loaders - 931, 933, 941 and 955 machines.  

Am wondering what manufacturer that Allis selected for the hydraulic  cylinders for the foot controls.  It seems like during the 60's and 70's Allis uses a lot of Cessna built controls. 

~ Orangeman 
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Points: 10633 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tracy Martin TN Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 2023 at 5:17pm
Originally posted by orangeman orangeman wrote:

Power Steering or ""Foot steer" was optionally available at extra cost from the factory on the 650 series machines. 

The 1975 parts manual for the H-4 and HD4 machines - which had been out of production by that time - shows only steering levers - brake control with no hydraulic foot steering option.  

At one point, the Allis Chalmers Industrial Tractor Division released a kit to allow IT dealers or owners to convert a machine from hand levers to (hydraulic foot control). 

 With the passage of 50 years it is plausible that on the HD4 (pictured above) that either the dealer or a customer  obtained a conversion kit and installed it or converted it themselves.  The latter is probably a long shot - but could be done.

~ Orangeman


I would like to see what needed changing to swap to pedal steer. I wonder if it was better or not? Thanks, Tracy
No greater gift than healthy grandkids!
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sresites Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 2023 at 5:51pm
uploads/23683/AC_653_PS1.jpgIMG_4469.jpguploads/23683/AC_653_PS1.jpg
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sresites Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 2023 at 6:05pm
I got hot on the trail looking got an HD4 or 653. But gave it up quickly when I found that parts are slim pickings. And getting this email this morning.

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Points: 1764 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 2023 at 7:53pm
Looks to be the standard reply from any of the Berco suppliers.  ~ Orangeman
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