If you desire to know which version of the Hupp you have you can pull the nose cone off and look inside. Look past
the rear gear at the back of the case. If you can see the allen headed bolts that hold it in place to the tractor,
you have the high range Hupp combo transmission. If you have to rotate the gear to see the bolt heads in the
notches cut into the gear, you have the low speed version of the Hupp combo. If your Hupp binds up shifting between
the different ranges, you have the early version. If the center stationary gear just under the nose cone has two
ears in the center of it, you have the weaker early version. The center shaft will also have only two matching
grooves milled into it. The newer version has 5 grooves milled into it and the center gear for a matching strength
of the Sherman. The Sherman only came with the 25 MPH top speed range and not the lower gear ratio of 15 MPH such
as some of the Hupps.
So, best way to find out is to drive it wide open. if it bounces just under 15 MPH you have the low range. if you
can get it up to a shade over 20, you got the high range. My high range has a welded case and is sitting submerged
in a 5 gallon bucket of oil out there somewhere. Those dual ear center gears can be spendy to replace. The updated
pieces including the shift arms to eliminate the hanging between gears are long out of production. So, if you
really like your Hupp, keep your eyes open and figure they are worth about $500-750 versus the Sherman typically
running $750 - 1200. The last Howard trans that sold on flea bay went for just a shade over 1500.
the rear gear at the back of the case. If you can see the allen headed bolts that hold it in place to the tractor,
you have the high range Hupp combo transmission. If you have to rotate the gear to see the bolt heads in the
notches cut into the gear, you have the low speed version of the Hupp combo. If your Hupp binds up shifting between
the different ranges, you have the early version. If the center stationary gear just under the nose cone has two
ears in the center of it, you have the weaker early version. The center shaft will also have only two matching
grooves milled into it. The newer version has 5 grooves milled into it and the center gear for a matching strength
of the Sherman. The Sherman only came with the 25 MPH top speed range and not the lower gear ratio of 15 MPH such
as some of the Hupps.
So, best way to find out is to drive it wide open. if it bounces just under 15 MPH you have the low range. if you
can get it up to a shade over 20, you got the high range. My high range has a welded case and is sitting submerged
in a 5 gallon bucket of oil out there somewhere. Those dual ear center gears can be spendy to replace. The updated
pieces including the shift arms to eliminate the hanging between gears are long out of production. So, if you
really like your Hupp, keep your eyes open and figure they are worth about $500-750 versus the Sherman typically
running $750 - 1200. The last Howard trans that sold on flea bay went for just a shade over 1500.