Toro 04470 Service Manual

Greensmaster 3250--D Hydraulic SystemPage 4 -- 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 3............................
GENERAL INFORMATION 4.....................
Operator ’s Manual 4..........................
Check Hydraulic System Fluid 4................
Towing Traction Unit 5.........................
Hydraulic Hoses 6............................
Hydraulic Hose and Tube Installation 7..........
Hydraulic Fitting Installation 8..................
HYDRAULIC SCHEMATIC 1 0....................
HYDRAULIC FLOW DIAGRAMS 12...............
Traction Forward and Reverse 12...............
Raise and Lower Cutting Units 14...............
Mow and Backlap 16..........................
Right and Left Turn 18.........................
SPECIAL TOOLS 20............................
TROUBLESHOOTING 23........................
General Hydraulic System Problems 23..........
Traction Circuit Problems 24...................
Mow Circuit Problems 25......................
Lift/Lower Circuit Problems 26..................
Steering Circuit Problems 27...................
TESTING 28...................................
Precautions for Hydraulic Testing 28.............
Charge Relief Valve Pressure Test 30...........
Wheel Motor Efficiency Test 32.................
Piston (Traction) Pump Flow Test 34............
Gear Pump (Rear Section) Flow Test 36.........
Implement Relief Valve Pressure Test 38.........
Lower Cutting Units Relief Valve (R2)
Pressure Test 40............................
Gear Pump (Front Section) Flow Test 42.........
Mow Circuit Relief Valve (S1R1) Pressure Test 44.
Reel Motor Case Drain Flow Test 46............
Steering Valve Test 48.........................
ADJUSTMENTS 50.............................
Adjust Manifold Relief Valve (R2) 50.............
SERVICE AND REPAIRS 52.....................
General Precautions for Removing and Installing
Hydraulic System Components 52.............
Flush Hydraulic System 53.....................
Filtering Closed--Loop Traction Circuit 54........
Hydraulic System Start--up 55..................
Gear Pump 56................................
Gear Pump Service 58........................
Piston (Traction) Pump Neutral Assembly 60.....
Piston (Traction) Pump 62.....................
Piston (Traction) Pump Service 66..............
Piston (Traction) Pump Crush Ring
Replacement 68............................
Front Wheel Motors 70........................
Rear Wheel Motor (If Equipped with 3WD) 72....
Wheel Motor Service 74...
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..............
Cutting Reel Motors 76........................
Reel Motor Service 78.........................
Oil Cooler (If Equipped) 82.....................
Lift Cylinders 84..............................
Lift Cylinder Service 86........................
Hydraulic Manifold 88.........................
Hydraulic Manifold Service 90..................
Steering Valve 94.............................
Steering Valve Service 96......................
Steering Cylinder 98..........................
Steering Cylinder Service 100..................
Hydraulic Reservoir 102.......................
Turf Guardian
TM
Leak Detector System
(If Equipped) 104............................
EATON, MEDIUM DUTY PISTON PUMP, REPAIR
INFORMATION, MODEL 70160 VARIABLE
DISPLACEMENT PISTON PUMP
PARKER TORQMOTOR
TM
SERVICE PROCEDURE
(TC, TB, TE, TJ, TF, TG, TH AND TL SERIES)
SAUER/DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Hydraulic
System

Toro 04470 Specifications

General

Brand	Toro
Model	04470
Category	Lawn Mower
Language	English