325C Excavator Machine System Specifications Main Hydraulic Pump Caterpillar


Main Hydraulic Pump
`
325C Excavator Machine System Specifications [RENR5363]
HYDRAULIC SYSTEM
PUMP GP
325C Excavator Machine System Specifications Main Hydraulic Pump
1.1. Main Pump
2.1. Pilot Pump

Note: The pump flows, relief valve pressures and other measured values are specifications for the components that are mounted on the machine. Refer to the Testing and Adjusting for Hydraulic Systems for the procedures to measure the values.




Illustration 1g00821031


NOTICE

The main hydraulic pumps must be filled with hydraulic oil before operation or damage will result. Fill the left pump through drain port located on the idle side. Fill the right pump through the drain port located on the drive side.


Main Pump

SAE 10W oil ... 50° ± 5°C (122° ± 9°F)

Pump rotation (shaft end) ... clockwise

Measure the pump output flow at the following pressure settings:

Minimum output flow ... 199 L/min (53 US gpm)
Pump delivery pressure ... 17640 kPa (2558.5 psi)
Power shift pressure ... 1270 kPa (184.2 psi)
Pump speed ... 1800 rpm
Minimum output flow ... 111 L/min (29 US gpm)
Pump delivery pressure ... 29400 kPa (4264.2 psi)
Power shift pressure ... 1270 kPa (184.2 psi)
Pump speed ... 1800 rpm

(1) Torque for three plugs ... 370 ± 50 N·m (270 ± 37 lb ft)

(2) Torque for two plugs ... 160 ± 30 N·m (120 ± 22 lb ft)

(3) Torque for sixteen plugs ... 13 ± 2 N·m (10 ± 1 lb ft)

(4) Torque for two plugs ... 370 ± 50 N·m (270 ± 37 lb ft)

(5) Torque for two bolts ... 44 ± 4 N·m (32 ± 3 lb ft)

(6) Torque for the two pins ... 160 ± 30 N·m (120 ± 22 lb ft)

(7) Torque for two plugs ... 25 ± 3 N·m (18 ± 2 lb ft)

(8) Remove grease, oil, and dust from the threaded section of piston. Apply 154-9731 Thread Lock Compound to the threaded section.

(8) Torque for assembly ... 350 ± 30 N·m (260 ± 22 lb ft)

(9) Torque for four nuts ... 177 ± 15 N·m (130 ± 11 lb ft)

(10) Torque for two nuts ... 98 ± 9.8 N·m (70 ± 7 lb ft)

(11) 200-3250 Spring

Free length ... 47.2 mm (1.86 inch)
Outside diameter ... 27.5 mm (1.08 inch)

(12) 200-3251 Spring

Free length ... 34.0 mm (1.34 inch)
Outside diameter ... 18.4 mm (0.72 inch)

(13) 099-3671 Spring

Free length ... 26.5 mm (1.04 inch)
Outside diameter ... 16.0 mm (0.63 inch)

(14) 200-3246 Spring

Free length ... 43.4 mm (1.71 inch)
Outside diameter ... 28.5 mm (1.12 inch)

Pilot Pump

Type of pump ... Gear

Temperature for SAE 10W oil during the bench test ... 50° ± 5°C (122° ± 9°F)

Measure the output flow at the following pressure setting:

Output flow ... 35.6 L/min (9.40 US gpm)
Pump delivery pressure ... 4100 kPa (594.7 psi)
Pump speed ... 1800 rpm

Information System:

345B, 345B Series II and W345B Series II Excavators Engine and Pump Control No Power Supply to Controller - Troubleshoot
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Starting Aid Circuit
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Start and Stop Circuit
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control General Information (Electrical System)
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Troubleshooting Diagnostic Codes
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Using Caterpillar Electronic Technician
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Parameter Status Checks
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Using Service Mode
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control General Information
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Related Components
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Solenoid Valves
3046 Engine for Caterpillar Built Machines Water Pump - Test
5130B Excavator Model Views and Specifications
5130B Excavator Access Doors and Covers
305 CR Mini Hydraulic Excavator Equipment Lowering with Engine Stopped
301.5, 301.6 and 301.8 Mini Hydraulic Excavators Hammer Operation - If Equipped
W345B Series II Excavator Hydraulic System Main Hydraulic Pump Air - Purge
W345B Series II Excavator Hydraulic System Relief Valve (Main) - Test and Adjust
W345B Series II Excavator Hydraulic System Relief Valve (Crossover) - Test and Adjust
325C Excavator Machine System Specifications Control Valve (Main)
W345B Series II Excavator Hydraulic System Relief Valve (Line) - Test and Adjust
5130B Excavator Hydraulic System Piston Pump (Swing)
5130B Excavator Hydraulic System Piston Pump (Swing)
W345B Series II Material Handler Machine Systems Main Control Valve - Disassemble