302.5C Mini Hydraulic Excavator Machine System Specifications Caterpillar


Main Hydraulic Pump

Usage:

302.5C GBB



Illustration 1g01150117


NOTICE

All pump lines and pump housing must be filled with oil prior to initial start-up. Failure to provide proper oil fill may result in system damage.


The following values are Bench Test Specifications.

(A) Main Pump

Type of pump ... Axial piston (variable displacement)
maximum output flow ... 28 cc/rev (1.7086 in3/rev)
Pump delivery pressure ... 22.1 MPa (3205 psi)
Max speed ... 2650 rpm

(B) Swing Pump

Type of pump ... Gear
maximum output flow ... 8.5 cc/rev (0.5187 in3/rev)
Pump pressure ... 17.4 MPa (2524 psi)
Max speed ... 2650 rpm

(C) Pilot Pump

Type of pump ... Gear
Minimum output flow ... 3.5 cc/rev (0.2136 in3/rev)
Pump pressure ... 3.4 MPa (493 psi)
Max speed ... 2650 rpm

(1) Torque for two bolts ... 100 ± 20 N·m (74 ± 15 lb ft)

(2) Torque for six bolts ... 55 ± 10 N·m (41 ± 7 lb ft)

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