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