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Groundsmaster 4500--D/4700--DHydraulic System Page 4 -- 2
Specifications
Item Description
Piston (Traction) Pump Sauer--Danfoss Variable Displacement Axial Piston Pump
Maximum Displacement (per revolution) 2.75 in
3
(45 cc)
System Relief Pressure: Forward 4350 PSI (300 bar)
System Relief Pressure: Reverse 5000 PSI (345 bar)
Charge Pressure 250PSI(17bar)
Front Wheel Motors Sauer--Danfoss 2--Position Axial Piston Motors
Displacement (per revolution) 1.83 in
3
(30 cc) Maximum / 0.89 in
3
(14.6 cc) Minimum
Rear Axle Motor Sauer--Danfoss 2--Position Axial Piston Motor
with Loop Flushing Valve
Displacement (per revolution) 2.32 in
3
(38 cc) Maximum / 1.13 in
3
(18.5 cc) Minimum
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 1050PSI(72bar)
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 100mesh(inreservoir)
Hydraulic Reservoir Capacity 7.5 U.S. Gallons (28.4 Liters)
Hydraulic Oil See Traction Unit Operator’s Manual
NOTE: Thepressurespecificationslistedaboveare
component settings. When using pressure gauges to
measure circuit pressures, values may be different than
these specifications. See the Testing section of this
chapter for hydraulic test procedures and expected test
results.