selector valve means connected between {TAIL ~ the fluid supply line} and {HEAD ~ the force} transmitting mechanism for selectively directing pressurized fluid from the fluid supply line to the force transmitting mechanism 
selector valve means connected between { TAIL ~ the fluid supply line } and { HEAD ~ the force } transmitting mechanism for selectively directing pressurized fluid from the fluid supply line to the force transmitting mechanism
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH