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Groundsmaster 4500--D/4700--D Hydraulic SystemPage 4 -- 3
Specifications
Item Description
Piston (Traction) Pump Eaton variable displacement piston pump
(Model 72400)
System Relief Pressure: Forward 5000 PSI (345 bar)
System Relief Pressure: Reverse 5000 PSI (345 bar)
Charge Pressure 207 PSI (14.3 bar)
Front Wheel Motors Eaton fixed displacement piston motors
(Model 74315)
Displacement (per revolution) 2.01 in
3
(32.9 cc)
Rear Axle Motor Eaton fixed displacement piston motor
(Model 74318)
Displacement (per revolution) 2.48 in
3
(40.6 cc)
Gear Pump Casappa 4 section, positive displacement gear type pump
Section P1/P2 Displacement (per revolution) 1.03 in
3
(16.85 cc)
Section P3/P4 Displacement (per revolution) 0.56 in
3
(9.16 cc)
Steering Control Valve Sauer--Danfoss Steering Unit, Series OSPM
Displacement (per revolution) 6.1 in
3
(100 cc)
Steering Relief Pressure 1050 PSI (72 bar)
Lift/Lower Relief Pressure 1600 PSI (110 bar)
Cutting Deck Motors Casappa Gear Motor
Displacement (per revolution) 1.16 in
3
(19 cc)
Cutting Deck Circuit Relief Pressure 3500 PSI (241 bar)
Engine Cooling Fan Motor Casappa Gear Motor
Displacement (per revolution) 0.50 in
3
(8.3 cc)
Engine Cooling Fan Circuit Relief Pressure 3000 PSI (207 bar)
Hydraulic Filters Spin--on cartridge type
In--line Suction Strainer 100 mesh (in reservoir)
Hydraulic Reservoir Capacity 8.25 U.S. Gallons (31.3 Liters)
Hydraulic Oil See Traction Unit Operator’s Manual
NOTE: The pressure specifications listed above are
component settings. When using pressure gauges to
measure circuitpressures, values may bedifferent than
these specifications. See the Testing section of this
chapter for hydraulic test procedures and expected test
results.
Hydraulic
System