Toro Workman 3000 Series Service Manual page 191

Table of Contents
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL INFORMATION
Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Fitting Installation
HYDRAULIC SCHEMATICS
Vehicle Hydraulic Schematic
High Flow Hydraulic Kit (Optional) Schematic
HYDRAULIC CIRCUIT OPERATION
Steering Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Raise and Lower Bed . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Pressure Test Kit
Hydraulic Tester (Pressure and Flow)
Hydraulic Test Fitting Kit
Male Coupler (For Optional High Flow
Hydraulic Kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .
TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test No. 1: Gear Pump Flow and System Relief
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test No. 2: Steering Control Valve and Steering
Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test No. 3: Lift Cylinder Internal Leakage
Test No. 4: High Flow Hydraulic Kit (Optional)
Gear Pump Flow and Relief Pressure
Workman 3000/4000 Series
3
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4
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8
9
10
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11
12
15
16
18
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Hydraulic System
SERVICE and REPAIRS
General Precautions for Removing and Installing
Hydraulic System Components
Check Hydraulic Lines and Hoses
Gear Pump (Vehicles With Liquid Cooled
Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Pump (Vehicles With Air Cooled Engine)
Gear Pump Service Barnes Gear Pump)
Gear Pump Service (Casappa Gear Pump)
Lift Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift Valve Service . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Control Valve
Steering Control Valve Service
Steering Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Cylinder Service
Lift Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lift Cylinder Service . . . . . . . . . . . . . . . . . . . . . . . .
Hydraulic Manifold (Optional High Flow
Hydraulic Kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAUER/DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Rev. D
Chapter 9
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26
. 27
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. . 29.1
30
32
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38
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46
Hydraulic System