Who made the 8000 series transmission?

Pay attention. Until you replace the shifting cables to the park/low/high transmission (range transmission), you are spinning your wheels. How easily those cables move when they are not "loaded" is no comparison to when they are under a load. Get new ones from AGCO and then see how things work. Secondly: The range trans comes out of LOW much more difficult than HIGH range. That's just the way it is, due to the mechanical advantage between the two gear ratios. I only use low for field work. High for everything else. Thirdly: one has to be a sort of truck driver to shift these PST range trannys, especially when the oil is cold, and under 150 degrees. The cold oil running thru the PST clutch plates and discs create a viscous drag, not allowing things to fully release when they should be. That's the nature of an oil cooled clutch and there are six of them. You cannot shove the clutch pedal down to the floor on any kind of a hill and hold it there and then expect to get the range transmission out of gear and into PARK !!! You must learn to pop the lever into neutral just BEFORE the tractor comes to a complete halt, while the torque on the transmission is low and to get the shifting collar to release. Pretty simple, but some people can't figure it out. Having the engines RPM slowed down to an idle helps too. The next time you can't get it out of gear (low range being the worst), instead of breaking off the shift lever, shut the engine off while still holding the brakes !! Come right out of gear ?? I'll bet it did. It's all in cold oil, viscous drag, old outdated shift cables and shifting TECHNIQUE.  Quickly shifting the trans into reverse and letting up on the inching pedal slightly does the same thing !!  Forty years ago, I had many driving lessons for new owners so they understood how to make a Power Shift tractor their friend, not a burden to operate. I'm not saying you may not have worn internal shift cover parts wear after 40 years of use. What I am saying is, I think there are things you don't know about the transmission set up and are going about it all wrong. Lastly, an improperly adjusted transmission brake/inching pedal can cause shifting problems too. This adjustment is in your owners manual.     Allis-Chalmers built every Power Director and Power Shift transmission in Milwaukee. They SOLD Steiger the complete driveline to that one model tractor, tranny and axles and drop box. They needed a row-crop tractor to adjust wheel tread and this is how they did it....bought the whole driveline from A-C.

Edited by DrAllis - 27 Sep 2023 at 6:07am

The Allis powershift was not related to a Stieger. The Steiger power shift is very Asian and NLA.

AC only sold the 4w305 and 4w220 to Steiger - as a basic power train sans engine - they supplied the rest.   AND at times we checked CIH and found some power train parts much cheaper than AC - then they scrapped them all best we can tell. 

Anyone know how many AC/Steigers were sold? I've never seen one that I know of.

All cougars 1225 and 1280, 1985 model year only

I remember going to a show and seeing the Steiger and walking past, then doing a double take - "what the "  then made a phone call and got the 'low down' - yes AC was desperate to increase unit production - running the plant and putting out product was what paid the bills.  Low unit production was one of many straws on the AC Camel's back in the 80's. 

Another interesting fact is that along with owning the AC tractor ag division during the last half of 85, Deutz also owned 30 of steiger.
Had tenneco not swooped in and bought all of the shares who knows what may have transpired.