{HEAD ~ The pivot arm} is then advanced toward {TAIL ~ the mounting table} so that the sector of the tire beads contacts the radial perimeter surface that is defined between the flanges of the wheel  
is advanced toward
{ HEAD ~ The pivot arm } is then advanced toward { TAIL ~ the mounting table } so that the sector of the tire beads contacts the radial perimeter surface that is defined between the flanges of the wheel
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH