Service Manual

325/328 Excavator
103 Operation and Maintenance Manual
Engine
Electrical
Hydraulic System
Make / model Kubota / D1703-M-E2B-BC-1
Fuel Diesel
Cooling Liquid
Maximum power at 2200 RPM (ISO 9249) 20.6 kW
Maximum governed speed 2200 RPM
High idle speed 2420 RPM
Low idle speed 1325–1375 RPM
Torque at 1600 RPM (ISO 9249) 103.4 Nm
Number of cylinders 3
Displacement 1.7 l
Bore 87 mm
Stroke 92.4 mm
Lubrication Pressure system with full-flow filter
Crankcase ventilation Closed breathing
Air filter Dry replaceable paper cartridge with safety element
Ignition Diesel-compression
Starting aid Intake air heater
Alternator 12 V — 40 A — open frame with internal regulator
Battery 12 V — 500 cold cranking A at -18°C — 75 min reserve capacity
Starter 12 V — gear reduction type — 1.4 kW
Pump type Dual-outlet variable displacement piston pump with gear pump
Pump 1 capacity 26.6 l/min at 2200 RPM
Pump 2 and 3 capacity 19.8 l/min at 26.6 RPM
System relief pressure for implement circuits 172 bar
System relief pressure for travel circuits 263 bar
System relief pressure for slew circuits 117 bar
System relief pressure for auxiliary circuits 172 bar
Dipperstick port relief base and rod end 290 bar
Boom port relief base and rod end 290 bar
Bucket port relief base and rod end 290 bar
Main hydraulic filter bypass 3.4 bar
Case drain bypass 1.4 bar
Control valve Ten-spool parallel series
Hydraulic filter Full-flow replaceable — 3 µm synthetic media element
Fluid lines SAE standard tubelines, hoses, and fittings
Auxiliary flow 46.4 l/min