Hydraulic Schematics 4 - Toro Groundsmaster 4700-D Service Manual

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SPECIFICATIONS
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GENERAL INFORMATION
Operator's Manual
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Towing Traction Unit
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Check Hydraulic Fluid
Relieving Hydraulic System Pressure
Traction Circuit Component Failure
Hydraulic Hoses
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Hydraulic Hose and Tube Installation
Hydraulic Fitting Installation
HYDRAULIC SCHEMATICS
GM 4500--D Hydraulic Schematic
GM 4700--D Hydraulic Schematic
HYDRAULIC FLOW DIAGRAMS
Traction Circuit: Low Speed (4WD)
Traction Circuit: High Speed (2WD)
Lower Cutting Decks: Groundsmaster 4500--D
Lower Cutting Decks: Groundsmaster 4700--D
Raise Cutting Decks: Groundsmaster 4500--D
Raise Cutting Decks: Groundsmaster 4700--D
Mow Circuit
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Cutting Deck Blade Braking
Steering Circuit
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Engine Cooling Fan Circuit
SPECIAL TOOLS
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TROUBLESHOOTING
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TESTING
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Traction Circuit Charge Pressure
Traction Circuit Relief Pressure
Rear Traction Circuit Relief (RV) Pressure
Traction Circuit Reducing Valve (PR) Pressure
Cutting Deck Circuit Pressure
Cutting Deck Circuit Relief Pressure
Cutting Deck Motor Case Drain Leakage
Gear Pump P1 and P2 Flow (Cutting Deck
Circuits)
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Steering Circuit Relief Pressure
Lift/Lower Circuit Relief Pressure
Gear Pump P3 Flow (Steering and Lift/Lower
Circuits)
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Cooling Fan Circuit
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Gear Pump P4 Flow (Cooling Fan Circuit)
SERVICE AND REPAIRS
General Precautions for Removing and
Installing Hydraulic System Components
Groundsmaster 4500--D/4700--D
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10
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11
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58
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68
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Hydraulic System
3
Check Hydraulic Lines and Hoses
4
Flush Hydraulic System
4
Charge Hydraulic System
4
Gear Pump
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4
Gear Pump Service
5
Piston (Traction) Pump
5
Piston (Traction) Pump Service
6
4WD/2WD and Filtration/Charge Control
7
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Manifolds
8
4WD/2WD Control Manifold Service
Filtration/Charge Control Manifold Service
Rear Axle Motor
Front Wheel Motors
Rear Axle and Front Wheel Motor Service
Cutting Deck Motor
Cutting Deck Motor Service
Deck Control Manifold
Deck Control Manifold Service (GM 4500--D)
Deck Control Manifold Service (GM 4700--D)
Steering Control Valve
Steering Control Valve Service
Steering Cylinder
Steering Cylinder Service
Engine Cooling Fan Motor
Engine Cooling Fan Motor Service
Fan Control Manifold
Fan Control Manifold Service
Lift Control Manifold
Lift Control Manifold Service (GM 4500--D)
Lift Control Manifold Service (GM 4700--D)
Lift Circuit Junction Manifold
Lift Cylinders: Decks #1, #4 and #5
Lift Cylinders: Decks #2 and #3
Lift Cylinders: Decks #6 and #7 (GM 4700--D) 130
Lift Cylinder Service
Hydraulic Reservoir
Hydraulic Oil Cooler
EATON MODEL 72400 SERVO CONTROLLED PIS-
TON PUMP REPAIR INFORMATION
EATON MODEL 74318 and 74348 PISTON MOTORS:
FIXED DISPLACEMENT, VALVE PLATE DESIGN
REPAIR INFORMATION
SAUER--DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Chapter 4
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Hydraulic System
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