Golden Jubilee
Posts: 5188
Joined: Thu Nov 29, 2012 9:28 pm
Location: Lyman, IA
Re: Old fire truck
I have seen tandem dump Loadstars with a 392, and tandem rears on juice brakes! None had roadranger's.
A roadranger is a twin countershaft trans with a "range" box on the back. You shift once thru low and then switch to high range and repeat for either 9 or 10 forward gears. Since they require and air system, they would not be used on a truck without an air system.
2 spd rears can be shifted by air, electric or vacuum. A power divider lock on a set of tandems can shifted by air or vacuum.
A 2 spd rear will either have a " Eaton Two Speed " on the Knob with a button" on the side for full air control or an electric red button switch lashed on the side of the stick for electric or electric over air. Vacuum shift had mostly gone away by the 50's and it would have a T handled cable that went to a vacuum valves.