...A SILLY QUESTION!

I know a little about 656s

Do any of the others have the hydraulic TA or hydraulic brakes?

Thanks for the help! Erik in WI

Second, it is a damn shame that neither the 66 or 86 series had the better TA or brakes.
I am looking for something of this size to replace the gas thirsty pig of a 706 I own for chore work.

Well, I better start lookin' in the classifieds!

Thanks again!
Erik in WI

There is nothing wrong with their T/As or their brakes. Millions of 'em still working today.

Allan

The 666 and 686 diesels have the D312 engine instead of the D282 that came in the 656.

Beyond that, not much changed. All had the mechanical TA. All had mechanical brakes. It was likely an effort by IH to reduce development costs, as things were starting to get really tight for the company. The tractor was a proven design with lineage clear back to the 300 (yes, the 656,666,686 had basically the same rear end as a 300!!!), so there was no need to change it.

The 686/666/656 tractors are basically nothing more than an updated version of the 560, which in turn was an updated version of the 400/450 and going back to the SMs and the M.

The 300 is and updated SH, originally from the H and it later led to the 350s then the 460. Whole lot smaller tractor.

A bit later and while all this was going on, the added 706 style line led right up the pack thru the 756/856/1256 and the 766/966/1066/1466 tractors.

They are all grouped into their own distinct family designated by size.

Allan