Hi Marius. Just to be a little pedantic, here are some comments regarding your informative post:
4ePikanini wrote:Gen1 = Easy Select
Gen2/3/4 = Super Select
Easy Select is a part time 4wd system, but I think the Easy Select name was only applied to later systems that featured the front axle disconnect (e.g. in the Colts). The Gen 1 had automatic freewheel hubs (like some Nissan Patrols and Land Cruiser 70 Series models).
Not all Gen 2s had the Super Select system; some had the Easy Select part time system.
Not all Gen 3s had the Super Select system; some also had Easy Select.
The Super Select system used in the Gen 2 (and in some Tritons) is a first generation system that features a bevel gear center differential and manual engagement of four wheel drive or low range. The front axle disconnect device is electromechanical.
The Super Select II system used in the Gen 3 and Gen 4 is the second generation system that features a planetary center differential and is servo-electrically actuated.
4ePikanini wrote:certain gen2 models and certain gen3 models came with rear difflock from the factory. Gen1's with rear diff lock are retrofitted. Later Gen3's and Gen4's didn't have rear diff lock as mitsu gave them Traction control.
Some Gen 3s had the rear diff lock right until the end of production (e.g. the so called "Africa Spec" Gen 3 GLX sold locally).
Some Gen 4s have a rear diff lock in addition to electronic traction control (e.g the current Gen 4 GLX).
4ePikanini wrote:4h - all wheel drive - front and rear propshafts connected via VCU - similar to viscous clutch or torque converter
Similar to a viscous cooling fan clutch, yes, but not the same thing as a torque converter. The operational principle in the viscous coupling is fluid shear (the fluid being dilatant), while the torque converter operates hydrodynamically in a similar way to a centrifugal pump (not quite identical, but you will get the idea).
4ePikanini wrote:4hlc - front and rear propshafts turn at the same speed - vacuum actuators engage front right sideshaft to front diff via electric solenoids based on sensors on transfer case and front diff
Actually the front axle is already connected electromechanically when 4H is selected. This has to happen to enable any drive troque to be transferred via the front axle, regardless of whether 4H, 4HLc or 4LLc is selected.
but small mistake - mix of systems and generations.
