a hydraulic device receiving {TAIL ~ discharged oil} from said pump to assist {HEAD ~ a steering wheel} by hydraulic power 
a hydraulic device receiving { TAIL ~ discharged oil } from said pump to assist { HEAD ~ a steering wheel } by hydraulic power
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH