Joystick steering could use these TWO different ways to control ...

[HCHenry]

Joystick steering could use these TWO different ways to control the main steering control valve:
 
  a. Mechanical linkage and pilot oil
 b. Position sensors and poppet valves
 c. Mechanical linkage and poppet valves
 d. Poppet valves and rotary valve

Question 2

This is what tries to keep the two moving parts of a rotary steering valve centered:
 
  a. Coil spring
 b. Leaf spring
 c. Heavy duty O-ring
 d. Proportional solenoid

[steff9894]

Answer to Question 1

B

Answer to Question 2

B

[HCHenry]

Thanks for the timely response, appreciate it

[covalentbond]

TYSM