TA T/A ? (quick dumb question)

[BCJohn]

I've searched a lot about my Hydro 86 and can't figure out what the TA or T/A is. Is it the speed setting control and if so, what does TA stand for?

Thanks very much for any help

 

[Farmwithjunk]

I've searched a lot about my Hydro 86 and can't figure out what the TA or T/A is. Is it the speed setting control and if so, what does TA stand for?

Thanks very much for any help

T/A = Torque Amplifier. Shift on the fly Hi/Lo. Works good when working. Money pit when not.

 

[oliver28472]

Torque Amplifier. It was IH's term for a two range shifter that you don't use the clutch for. I doubt if it was available on their Hydro tractors, just gear drives. Started out on the Farmall M (MTA) and stopped maybe in the 86 series or later gear drive tractors.

 

[kenstrac]

Torque amplifier, it has gear reduction on the shaft in the transmission that lowers the speed and increases torque most T/As will not hold you back in a hill in low. and you don't have to use the clutch to shift it.

 

[flusher]

T/A = Torque Amplifier. Shift on the fly Hi/Lo. Works good when working. Money pit when not.

I guess the IH T/A is equivalent to Massey Ferguson's Multipower shift on the fly setup. Both features showed up in the 1960s, IIRC.

 

[kenstrac]

T/A = Torque Amplifier. Shift on the fly Hi/Lo. Works good when working. Money pit when not.

I know but the IH is cheaper to fix it's a self contained unit that comes out in one piece I think Formsprag made them for IHC

 

[RickB]

Torque amplifier, it has gear reduction on the shaft in the transmission that lowers the speed and increases torque most T/As will not hold you back in a hill in low. and you don't have to use the clutch to shift it.

T/A's built after 1963 do not freewheel, at least the ones installed on 70 HP and up tractors, and those installed on Doncaster-built utility tractors. The original mechanical T/A will allow freewheeling in T/A mode, but except for a very few models, this type disappeared from new tractors in 1963.

And certainly no hydrostatic drive IH's ever had a T/A.