This is purely academic.
As you can see B777 200LR has a truck tilt to -19 DEG capability.
The MLG truck positioner actuator is designed to allow a maximum toes down angle of 19deg on the truck
A b777300ER does not have that feature.
Q1) why is there a difference which only applies to 200LR?
Q2) what does this thing do? Why is it installed?
I am fully aware of the main gear differences otherwise with regards to the semi lever gear strut which is exclusive to 300ER. has this got to do with that?
Kindly pardon the curiosity, this is purely academic.
Thankyou & regards