A first pressure chamber of the cylinder is connected to a first supply line , for setting a smaller displacement volume while a second opposed pressure chamber is connected to {HEAD ~ a second supply line} , for setting {TAIL ~ a larger displacement volume} 
for setting
A first pressure chamber of the cylinder is connected to a first supply line , for setting a smaller displacement volume while a second opposed pressure chamber is connected to { HEAD ~ a second supply line } , for setting { TAIL ~ a larger displacement volume }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL