When the first or second valve of the extension side or compression side pressure control valve is opened, fluid is discharged from the guide bore into {TAIL ~ either} of {HEAD ~ the two chambers} in the cylinder through the communication passages and the first or second check valve 
When the first or second valve of the extension side or compression side pressure control valve is opened , fluid is discharged from the guide bore into { TAIL ~ either } of { HEAD ~ the two chambers } in the cylinder through the communication passages and the first or second check valve
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 TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH