What wheels are powered when power divider is off?

All of them.

Yes really.

You're not turning on or off the power divider, or engaging or disengaging it. You're locking it/unlocking it. The power divider is always engaged. All four wheel ends have a link to the driveshaft. What you're doing when you "lock" it is forcing the front and rear diffs to turn at the same speed. Now instead of just one wheel spinning on one diff you need one wheel spinning on both diffs to get stuck.

 

Rear axle is the main drive. This is why the rear drive tires wear out faster then the fronts. Things change off road and in slippery conditions.

 

Rear, not sure where allen5oh was going?

 

X2 wrong

Why do we seem to have this debate once a year or so?

Have you guys never seen a wheel on the front diff spin? I sure have.

edit:

More like 3 months ago:

http://www.thetruckersreport.com/tr...-eighteen-wheelers/207642-axle-interlock.html

 

On my tractor under normal driving conditions, my right front drive wheel is under power, powder divider locks in the rear axle, now I have the right front and left rear depending on weight transfer. I also have a switch marked traction control when engaged it locks in all 4 positions (or all eight drive tires) lock in.

I trucks I have owned and or driven in the past would give you 1 drive per axle with the power divider locked in, and only a single on the front diff when unlocked.

I dont know all trucks are the same I can only speak about the ones I have seen in the last 4 million miles.

 

Correct answer

 

Power flow to all 4 wheels equally divided among all 4 wheels because of two differentials and a power divider.

 

Actually, the reason the rear drives wear out quicker than the front drives is because of scrub. Every time you turn, the truck pivots on the front drive and the rear drive skids sideways.