Sistem leumpang excavator utamana diwangun ku pigura lagu, final drive assy perjalanan kalawan gearbox, sprocket, roller lagu, idler, assembly lagu silinder, roller carrier, assembly sapatu lagu, clamp rail jeung saterusna.
Nalika excavator walks, unggal awak kabayang gulung sapanjang lagu, motor leumpang drive sprocket, sarta sprocket kabukti pin lagu sadar leumpang.