Hydraulic System - Toro Groundsmaster 4500-D Series Service Manual

Hydraulic System

Groundsmaster ® 4500-D/4700-D
19245SL Rev A
Item
Piston (Traction) Pump
Maximum Displacement (per
revolution)
System Relief Pressure:
Forward
System Relief Pressure:
Reverse
Charge Pressure
Front Wheel Motors
Displacement (per revolution)
Rear Axle Motor
Displacement (per revolution)
Gear Pump
Section P1/P2 Displacement
(per revolution)
Section P3/P4 Displacement
(per revolution)
Steering Control Valve
Displacement (per revolution)
Steering Circuit Relief Pressure
Lift/Lower Circuit Relief Pressure
Cutting Deck Motors
Displacement (per revolution)
Cutting Deck Circuit Relief
Pressure
Engine Cooling Fan Motor
Displacement (per revolution)
Engine Cooling Fan Circuit Relief
Pressure
Hydraulic Filters
In−line Suction Strainer
Hydraulic Reservoir Capacity
Hydraulic Oil
Note: The pressure specifications listed above are component settings. When
using pressure gauges to measure circuit pressures, values may be different
than these specifications. See
and expected test results.
Sauer−Danfoss Variable Displacement Axial Piston Pump
Danfoss Variable Displacement Axial Piston Motors
26.47 cc (1.62 in³) Maximum / 14.6 cc (0.89 in³) Minimum
Danfoss Variable Displacement Axial Piston Motor
33.54 cc (2.05 in³) Maximum / 18.5 cc (1.13 in³) Minimum
Casappa 4 Section, Positive Displacement Gear pump
Sauer-Danfoss Steering Unit, Series OSPM
Testing (page 5–43)
Page 2–5 Specifications and Maintenance: Specifications
Description
45 cc (2.75 in³)
350 bar (5075 PSI)
360 bar (5225 PSI)
17 bar (250 PSI)
with Loop Flushing Valve
16.85 cc (1.03 in³)
9.16 cc (0.56 in³)
100 cc (6.1 in³)
72 bar (1050 PSI)
110 bar (1600 PSI)
Gear Motor
19 cc (1.16 in³)
241 bar (3500 PSI)
Casappa Gear Motor
8.3 cc (0.5 in³)
207 bar (3000 PSI)
Spin−on Cartridge Type
100 Mesh (In Reservoir)
28.4 Liters (7.5 U.S. Gallons)
See Operator's Manual
of hydraulic test procedures