2010 T800

Any one out there familiar with drive axles on a T800.
Should I be spinning right front and rear left at the same time?
No switches at active on panel, and supply to rear differential lock has no output to it.
Will post the dash switches shortly.

 

Here they are.

 

Apparently these rears pull left rear and right front. Driver front diff-lock, passenger right rear has same set up.
Switches above right one let's you lock all, or left switch right rear only.
Possie track design.
Any thoughts, have a call in into national drive train for Tuesday.
Just picked this truck up, so haven't used this set up yet.
My older other trucks only had one interlock switch, and front would only drive if nothing was selected.
Any that can confirm chim in.

 

Ok, to recap with both switches off should I be pulling off of right front and left rear continually?

 

Yep backing up and incline bob tail I noticed the two opposite tire spon.
Trying to figure out a power issue pulling hills, and deceleration when sifting.
Also has a vibration through seat, dash, (not front end, or clutch just replaced).
Going in Tuesday to replace plungers and springs in Jake rockers.
Had one repair kit so replaced #6 last week, made a difference for a bit.