A hydraulic power supply is provided on the upper structure and the output of which is controlled by {HEAD ~ an operator} in {TAIL ~ the excavator cab} to be supplied to the hydraulic motor supported on the main chassis  
A hydraulic power supply is provided on the upper structure and the output of which is controlled by { HEAD ~ an operator } in { TAIL ~ the excavator cab } to be supplied to the hydraulic motor supported on the main chassis
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH