Centre Diff locks 100 series.

Steve
The center diff is to stop wind up in constant 4x4s, when you lock it the vehicle is then just like mine , a normal 4x4.

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Steve,

The 100 series is a constant 4WD and has 3 diffs. One on the front axle, one on the back axle and one on the side of the transfer box.

When in H4, the vehicle can be driven on a hard surface with out transmission wind up because of the centre diff. If the vehicle is driven off road in this mode and just one wheel is lifted the vehicle goes no where. All the power will go to the wheel with least resistance.

When the centre diff is lock via either the button is pushed or low range is selected, the vehicle is now in 4WD. This is like when H4 or L4 in the Troopie is selected with the front hubs locked.

With the centre diff locked the power is split 50/ 50 to the front and rear diffs. If one front wheel is lifted off the ground 50% of the power will be lost out the front axle but there will be 50% of the power still going to the rear axle. This will allow the vehicle to drive.

The center diff lock is electrical operated and work well. The vehicle can be on the move when the center diff is locked and should be going in a straight line to do so smoothly. To disengage the vehicle can also be on the move and again it is better to lift the foot of the accelerator and driven a straight line.

Wayne

Hi Steve, Might as well add my bit, Wayne has explained it very well, The only thing that i've seen happen with toyota and pajero with centre diff locks, is the fact that if you are on a hard surface in steep country with a heavy load on ,or towing a heavy item ,On take off you can suffer severe diff wind up, if low range is selected. The way around it is to wire it up so you can select low range with out it engaging 4wd in other words turn it off.

Landrover defenders are constant drive ,but you engage the centre diff manually.

Confused!!?? So am I...lol :))))).


Cheers Axle.

I might get howled down for this reply, but shouldn't a tour operater be familiar with the various 4WD systems on such a popular vehicle as this .

Steve, when you have the centre diff locked try a light foot on the brakes at the same time as you use a little accelerator. This will help engage the lsd in the rear. Alternatively put the handbrake on a few notches - but remember to let it off again as soon as you get moving again. Don't believe anyone who tells you the lsd's don't work, they are just showing their ignorance of the mtc that is occasionally required to keep them in good working order.

Now here's one for all you that have been around the traps. Where is reverse gear on a British Austin Champ 4X4 & if you know that you would also know how many gears it has in each direction(Must be some ex military personel out there). As a past Rec/Mech I found out the hard way & do know ! Any takers !

Steve,

one of the explanations above was pretty accurate(waynes i think)as for wind up i have cured that problem,i have disconnected the auto introduction of the centre diff when selecting low range,so i can use 4L or 4H with no c/diff or at the press of the button its on.there is a switch on the top rear RHS of the transfer case,unplug and seal up this connector and job done-full manual control of centre diff which i have found to be much more user friendly,especially when reversing the caravan in the drive.cheers Paul