Construction Machinery: Crawler-Mounted Loader Caterpillar

Model	Type of pump
973C	Hydrostatic drive/piston
963D	Hydraulic system of Closed Center Load Sensing System (CLSS)
963C	VANE
963	vane pumps
953D	Hydrostatic drive pumps
953C WH	piston pump
953C	VANE
943	vane pumps
941B	vane pumps
939C	gear type pump
933C LGP	with open center, parallel system
933C	with open center, parallel system
931C serie II LGP	Gear type pump with single section
931C serie II	Gear type pump with single section
931B LGP	Gear type pump with single section
931B	Gear type pump with single section
931 LGP	Gear type pump with single section