Therefore, when {HEAD ~ the housing} 42 is positioned onto {TAIL ~ member} 22, the face 33 of the box 31 will not strike the nozzles 88 which could cause damage to the face 33 of the box 31 
is positioned onto
Therefore , when { HEAD ~ the housing } 42 is positioned onto { TAIL ~ member } 22 , the face 33 of the box 31 will not strike the nozzles 88 which could cause damage to the face 33 of the box 31
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL 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 OTH OTH OTH OTH