In the operating device according to the present invention, the relief valve may be configured to generate {HEAD ~ desired damper torque} by setting {TAIL ~ the relief valve} such that the relief valve has a desired override characteristic 
by setting
In the operating device according to the present invention , the relief valve may be configured to generate { HEAD ~ desired damper torque } by setting { TAIL ~ the relief valve } such that the relief valve has a desired override characteristic
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH