{HEAD ~ Chain} 306 is operably coupled with {TAIL ~ a hydraulic motor} in the same location as pusher motor 112 for the first embodiment 
is operably coupled with
{ HEAD ~ Chain } 306 is operably coupled with { TAIL ~ a hydraulic motor } in the same location as pusher motor 112 for the first embodiment
HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH