Rockwell triaxle diff lock and lockers

When the lockers are engaged the air cylinder pushes the sliding collar on the axle into
engagement with a spline on the differential case locking the spider gears so they can't turn.
The lights are controlled by the switches just inward of the air cylinders. The light comes on to tell
you the locks are physically locked. The spline on the diff case is not very hard steel so it is important not to disengage the lockers in a turn or during wheel spin as there is tension on the collar and the spline and when it comes out of engagement with tension on it it can round off the ends of the jaw clutch over time taking most of the spline off the diff case.