Axle and Locker Technical Archives - Toyota at Off-Road.com
May 11, 2008

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Axle and Locker Technical Archives
  • Motive Gears and Detroit TrueTrac for Project Off-Road Toyota




    Most off-road 4x4 projects require a close look at gears and lockers some time in the life of the project. It is the nature of the beast and a VERY important piece that is sometimes overlooked.

    The Automatic Disconnecting Differential system


    There is a pneumatic device called an "actuator" attached to the front differential that effectively slides the driver side shaft out of the differential. On trucks that have ADD Toyota uses "live hubs" (see hubs section below). This means that both front half shafts and the front diff spin even in 2WD (but not the front drive shaft). There are a set of air bags inside the actuator that control the position of the ADD sleeve. This actuator will stay in it's current position until vacuum is applied to change it's position even if there is no vacuum at all. For 2WD operation vacuum is applied to driver side tube of the actuator and it holds the sleeve in the out position.

    Solid Front Axle Swap IFS to Solid Axle Part 3


    In doing the solid axle swap, All Pro Off Road made the front suspension on my truck very similar to the suspension found on 1979-85 Toyota trucks. One change that was made is something called crossover steering.. This is a steering system used on many other trucks, including some Toyota Land Cruisers.

    Solid Front Axle Swap


    As I tackle more difficult rock trails I have been having more and more problems with the IFS suspension the factory saw fit to put on my truck.

    Solid Front Axle Swap IFS to Solid Axle Part 2


    In doing the solid axle swap, All Pro Off Road made the front suspension on my truck very similar to the suspension found on 1979-85 Toyota trucks. One change that was made is something called crossover steering.. This is a steering system used on many other trucks, including some Toyota Land Cruisers.