The oil filling funnel is mounted to {TAIL ~ a first end} of {HEAD ~ the extendable tube assembly} 
The oil filling funnel is mounted to { TAIL ~ a first end } of { HEAD ~ the extendable tube assembly }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD