The motor moves a disk drive pusher in {TAIL ~ a first direction} to rotate {HEAD ~ the sensor pack}, and then moves the disk drive pusher in a second direction to eject a sensor from the sensor cavity and through the sensor opening 
The motor moves a disk drive pusher in { TAIL ~ a first direction } to rotate { HEAD ~ the sensor pack } , and then moves the disk drive pusher in a second direction to eject a sensor from the sensor cavity and through the sensor opening
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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