parts interchangeability

[mavfreak 11]

I have a hydro from a "no" name 12 auto. will parts from this swap out with a "D" hydro? Mainly the cases?

[mavfreak 11]

I've been trying to research this but I need some part numbers. Does anyone know the part numbers for the cases on a "d"s trans

[mavfreak 11]

Sundstrand 90-2046

Sundstrand 90-1136

Sundstrand 90-1137

whats the differances in these trans? and How do I know which one I have?

[TT-(Moderator) 1,145]

They are the model numbers of the Sundstrand hydro units.

The transaxle cases and internals are made by Wheel Horse and the part numbers can be found at the Toro MPV, PartsTree, etc.

The cases for the 12 auto have different part numbers than the one or two D series cases I looked up.

Some of the 1974 & newer C series cases showed the same part numbers as D cases though.

1973 was the year that the gear motor was replaced by the piston-to-piston motor on the hydro. That's why there are two different Sundstrand models listed.

[mavfreak 11]

Ok thanks TT. I have one for the 12 that has been striped down and someone was looking for a side case for a "D". That saves him a trip here. I hate to junk this but I hate it in being in the way also.

That sucks!

Thanks for your help!

[mavfreak 11]

does anyone need or want any parts off this? No pump or strainer and one bad axle.

[kpinnc 12,444]

I have a hydro from a "no" name 12 auto. will parts from this swap out with a "D" hydro? Mainly the cases?

I believe the cases differ mainly in that the "D" series used larger bearings at the differential end caps. I'm not sure if the ID of those bearings are the same as the regular end caps or not.

It may be possible to use the cases from a D on the 12 Auto (if the diff end caps are in fact the same diameter), but I would not try to use them the other way around.