{HEAD ~ The blower motor} is rotated relative to {TAIL ~ the cover}, and the interconnecting means are respectively interconnected with each other upon the rotation of the blower motor thereby to releasably secure the blower motor to the cover 
is rotated relative to
{ HEAD ~ The blower motor } is rotated relative to { TAIL ~ the cover } , and the interconnecting means are respectively interconnected with each other upon the rotation of the blower motor thereby to releasably secure the blower motor to the cover
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL 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 OTH OTH OTH OTH OTH