660 belt pulley gearbox

Farmboy856 · May 22, 2011

A friend just bought a nice 660 diesel and would like to put a belt pulley on it. He has several Ms and SMs and he asked me if an M/SM belt pulley gearbox will interchange with the 660?

Any help/ideas appreciated. When I was a kid, I remember my granddad--- I think--- taking a belt pulley gearbox off the M to put on the 560 occasionally when we needed more horses on the Gehl silage blower.

sflem849 · May 22, 2011

I don't think they are the same as an M. A 560 and an M are the same. Except sometimes the actuating rod comes out the other side. This can be switched according to some.

If it is the same as a W-9 gearbox I can get you one in SE WI. It has been outside for 30+ years so it will need a lot of help.

rustred · May 22, 2011

visually they all look the same on W6,M, 400, 450, 560 and 660. i am just am not sure about the gear matching but i believe its the same.
the W9 definitly no match.

Wardner · May 22, 2011

Not sure if it will fit as my 660 uses an Elwood transfer case where the belt pulley resides. I'd say that if the driving gear is there, it will fit. Utilities in the smaller line (300-350-460 don't have the gear and use a special plate on the IPTO for running a right angle belt pulley gearbox. 660 also have that plate for the planetary IPTO
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Wardner · May 22, 2011

Looks like my pictures won't come up in Classic. They should work in Modern so I am reposting. Edit: nope don't work in Modern but may later. Must be something down at Photobucket. That's a first for me.

D Slater · May 22, 2011

If the housing will clear everything on the tractor they will bolt up. Probably have to modify the shifter shaft lever and linkage to use unless the parts from a international 560 will work. Some belt pulley housings are made for more clearance to remove and install starters.
Keep in mind that shaft speed will be more than a M. Probably why IH wanted a rear unit used.

J.J. from Afton · May 22, 2011

As others have said one off of a 560, M, W-6 etc will work, but if its off the earlier letter series you have to change out the control lever or make your own. I put one of a W-6 onto my International 560, you just have to watch the clearence with the starter, air cleaner and fuel sediment bowl.

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660 belt pulley gearbox

Farmboy856

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sflem849

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rustred

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Wardner

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Wardner

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D Slater

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J.J. from Afton

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