I must take exception to Mike B's comment that a power divider is an auxiliary transmission. A power divider is the unit on the front live tandem that allows power to the rear axle by engaging another short driveshaft. It is engaged by a switch in the cab. An auxiliary transmission is just that; another tranny behind the main transmission. Also this Truckstell name keeps popping up and it was only a name used to get around the name Ruckstell who made truck gear(s) and tandems going back to the 30's. The company was purchased by Eaton which was small and almost unheard of at the time (40-50's) and the changed the name to Truckstell to get around some dealer/distributor issues. So it was only a name and not a brand which was a genuine Ruckstell product. At some point, perhaps 1956, Eaton started selling directly to the OE builders and the Truckstell name was dropped by them but not entirely by their former dealers. The dates are still a little fuzzy but I hope this allows for some of the misunderstanding to clear away. And yes, I have one.
