Caterpillar 2745947 hydraulic main pump:
Type: Variable displacement axial piston pump
Maximum pressure: 35 MPa (5,076 psi)
Maximum flow rate: 516 L/min (136 US gal/min)
Rated speed: 2000 RPM
Displacement: 170 cc/rev
Control type: Hydraulic servo or manual control
Caterpillar 259-7954 and 259-7953 hydraulic main pumps:
Type: Variable displacement axial piston pump
Maximum pressure: 35 MPa (5,076 psi)
Maximum flow rate: 460 L/min (122 US gal/min)
Rated speed: 2000 RPM
Displacement: 145 cc/rev
Control type: Hydraulic servo or manual control