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  1. #1
    Member
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    Jan 2012
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    Texas
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    John Deere AR, a # of Farmalls, AC WD45, couple of Fords and a Massey Harris

    Default Torque Amplifier What is it?

    Ok first thing. Why is International harvester under "other forums" and not a forum of it's own?

    My main question is What is a Torque Amplifier?
    What does it do for me? When do I need to use it?
    What is it actually changing in the way the tractor is running/pulling?

    I have an IH 544 farm tractor. diesel engine.
    On the left side of the steering wheel is a large lever that the book calls a Torque amplifier. it is adjusted along with the clutch adjustments according to the manual I have.

    I like levers as much as the next guy but I don't know what this on is or does.
    It doesn't seem to do anything when I am just driving the tractor with no load.


    can anyone enlighten me on the subject?

  2. #2
    Super Star Member LD1's Avatar
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    Apr 2008
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    10,652
    Location
    Central Ohio
    Tractor
    Kubota l3400

    Default Re: Torque Amplifier What is it?

    Quote Originally Posted by Cecil Stults View Post
    Ok first thing. Why is International harvester under "other forums" and not a forum of it's own?
    It isnt under "other forums". Its under "brand specific forums> case-IH". Which is coincidentally where you posted it. So it does have a forum all of its own. It just doesnt have its own "heading".

    And honestly, I think TBN has too many forums already. Most us seasoned vets really dont pay attention. We just browse "todays posts" to see all current threads regardless of what forum they are in. The only time we pay attention is when we need to post a thread. And then it can get tricky. For example: If I made a grapple attachment for my kubota and have questions about how to route the hydraulics, what forum should I post in????

    Attachments?
    Kubota Owning/operating?
    Hydraulics?
    Build it yourself?
    Customization?

    See the issue. The forum is set up the way the owner and moderators want it to be. And if you have any suggestions on how to improve it, I am sure they are all ears.

    Now on to your TA question.

    Quite simply, the TA is an additional gearbox with two speeds and its own clutch. So it effectivly doubles the # of gears your main transmission has. And it can be shifted without the use of the foot clutch. So if you are pulling a load, and you start to bog down, you can shift the TA into low without pusing the main clutch and comming to a halt and have to try restarting again.

    It was quite popular in the day at the tractor pulls. Start off in low on the TA, get a head of steam and shift it to high. Near the end when she starts bogging again, go back to low to get every last inch possible.
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


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  3. #3
    Platinum Member pjbci's Avatar
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    Feb 2012
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    Location
    Summit. Ms
    Tractor
    JD 4840, 450j, 310, komatsu D31px22, IH 1486, MF 135, MHF TO35

    Default

    If your T/A doesnt seem to do anything it may have given the last owner trouble and been locked out. They worked great but on the higher hp tractors they had a tendency to crack the hyd clutch pack housing and be very expensive to repair. The cheap fix in my part of the south was to just bolt up the clutch pack and render the T/A inoperable. This could be why yours doesnt seem to do anything. You should feel the tractor speed up and slow down when you move the lever.

  4. #4
    Member
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    Jun 2010
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    Location
    arkansas u.s.a.
    Tractor
    changes

    Default Re: Torque Amplifier What is it?

    they are nice when baling hay on hilly ground

  5. #5
    Veteran Member
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    Jan 2009
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    Location
    Carroll, Ohio
    Tractor
    Massey 180 Diesel

    Default Re: Torque Amplifier What is it?

    Just don't shift into the low side, when going down hill, expecting it to hold back. They will free wheel in the low side.

  6. #6
    Platinum Member pjbci's Avatar
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    Feb 2012
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    Summit. Ms
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    JD 4840, 450j, 310, komatsu D31px22, IH 1486, MF 135, MHF TO35

    Default

    Quote Originally Posted by DJ54
    Just don't shift into the low side, when going down hill, expecting it to hold back. They will free wheel in the low side.
    Torque amplifier does provide engine braking on hills. Your thinking about masseys multi power. Same concept but no downhill engine braking.

  7. #7
    Super Member RickB's Avatar
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    Eastern NY
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    Case 885, Ford 4000

    Default Re: Torque Amplifier What is it?

    Quote Originally Posted by pjbci View Post
    Torque amplifier does provide engine braking on hills. Your thinking about masseys multi power. Same concept but no downhill engine braking.
    The mechanical TA in the OP's 544 will freewheel in TA mode, as all mechanical TA's do. Hydraulic TA's are of a different design and provide engine braking.
    We have too much gun control.
    What we need is more idiot control.

  8. #8
    Super Member
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    central New York
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    all makes and models

    Default Re: Torque Amplifier What is it?

    Quote Originally Posted by RickB View Post
    The mechanical TA in the OP's 544 will freewheel in TA mode, as all mechanical TA's do. Hydraulic TA's are of a different design and provide engine braking.

    That is the main reason for short life of a TA to use it for braking. They were designed for use under pulling load not braking.

  9. #9
    Super Member RickB's Avatar
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    Eastern NY
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    Case 885, Ford 4000

    Default Re: Torque Amplifier What is it?

    Quote Originally Posted by art View Post
    That is the main reason for short life of a TA to use it for braking. They were designed for use under pulling load not braking.
    The real damage to hydraulic TA's is done by SHIFTING to TA mode to slow the tractor.
    We have too much gun control.
    What we need is more idiot control.

  10. #10
    Silver Member
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    Feb 2012
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    Location
    Brandenburg ky
    Tractor
    2013 john deere 5075E and others

    Default Re: Torque Amplifier What is it?

    Case had a Case-a-Matic, Ford had a Dual Power, MF had a Multipower, IH had a TA, JD had something like it but I don't know what it was called(test drove a 2840 with it). I don't know if Oliver/White had one. I'd trade them all for a powershift/quadrange style tractor.

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