... CW-430 CW-410 CW-420 CW-3500 Crownwell Drilling Rig Model CW-430 CW-410 CW-420 CW-3500 Crownwell ... CompressorDiesel engineCWH300,CWH450,CWH600,CWH750,CWHH750Electric motorCWH90EP,CWH132EP,CWH185EP Crownwell Drilling Rig Model CW-430 CW-410 CW-420 CW-3500