When the brake is released, the pressure fluid flows out of the wheel brakes 34, 35, 36, 37 via the relief line 334 containing the non return {HEAD ~ valve} 335 back into {TAIL ~ the master brake cylinder} 331 
back into
When the brake is released , the pressure fluid flows out of the wheel brakes 34 , 35 , 36 , 37 via the relief line 334 containing the non return { HEAD ~ valve } 335 back into { TAIL ~ the master brake cylinder } 331
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 OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH