Who can tell me how this works? Thanks

what kind of truck?

 

The power divider gives equal power to each axle.

 

In normal mode(unlocked) only the rear rear is pulling.When locked both rears are pulling.
You may find a more detailed (i.e.better) description on Eaton or Rockwells website.

 

Back in the stone-age, power dividers automatically ( without engaging ) sent power to both drive axles whenever one drive axle lost traction. Not sure how they're doing it now a days.

We learned that the hard way.

 

Think of it as a center differential on a all wheel drive car/truck.
It splits power to both axles.
If you look at the trucks data plate the drive axles are rated at 19000lbs and 19000lbs.
If only one axle drove the truck they would be 21000lbs or grater, and tires on that axle would wear much faster.
We had a truck back at OTRX with mismatched gears 3.70 in the front 3.55 in the back.
The back would wear out a set of tires in 40000 mile due to it doing all the work and pushing the front.

 

if you had a truck with mismatched gears--it will blow the diff out within a few miles===i learned that one the hard way
the rear diff does all the work until you lock in power divider
then if you also have interaxle lock it will lock up both axles on each differential--rather to just the one with less traction---its a great help in deep snow

 

never shift in ( engage) while moving unless you want some xtra scrap metal

 

if you need to know the gear ratio--check on the input shaft--not the axle tag
thats where i got caaught--the new diff was sitting on picker ready to put in and i got the nod--previous guy and parts guy ordered the replacement from thaxle tag--but somewhere along the line they had been changed---so i slid it in buttoned it up--took it for a road test--told shop foreman that it had a pretty wild viberation--inb his wisdom he says it ok after he drives it---so late at night it hooks up to 2 53 footers and makes it about 10 miles before it took the bearings out
guess the morale of the storey is to never trust anybody and always double check

 

That's how we got mismatched gears, wheels spinning at 30mph and the driver flips the inter-axle lock.
Much to his amazement the truck did not get unstuck.
He did set the company record for flying diff parts though.