Service Manual

Table Of Contents
Greensmaster 3300/3400 Hydraulic SystemPage 5 − 1
Chapter 5
Hydraulic System
Table of Contents
SPECIFICATIONS 3............................
GENERAL INFORMATION 4.....................
Operator’s Manuals 4.........................
Check Hydraulic Fluid Level 4..................
Pushing Traction Unit 4........................
Relieving Hydraulic System Pressure 5..........
Traction Circuit Component Failure 5............
Hydraulic Hoses 6............................
Hydraulic Hose and Tube Installation (O−Ring
Face Seal Fitting) 7.........................
Hydraulic Fitting Installation (SAE Straight Thread
O−Ring Fitting into Component Port) 8.........
HYDRAULIC SCHEMATIC 10....................
HYDRAULIC FLOW DIAGRAMS 12...............
Traction Circuit 12............................
Lower Cutting Units 14........................
Raise Cutting Units 16.........................
Mow and Backlap 18..........................
Right and Left Turn 20.........................
SPECIAL TOOLS 22............................
TROUBLESHOOTING 26........................
General Hydraulic System Problems 26..........
Traction Circuit Problems 27...................
Mow Circuit Problems 28......................
Lift/Lower Circuit Problems 29..................
Steering Circuit Problems 30...................
TESTING 32...................................
Charge Relief Valve Pressure Test 34...........
Piston (Traction) Pump Flow Test 36............
Wheel Motor Efficiency Test 38.................
Steering/Lift Relief Valve Pressure Test 40.......
Lower Cutting Units Relief Valve (RV)
Pressure Test 42............................
Steering/Lift Circuit Gear Pump Flow Test 44.....
Power Steering Valve Test 46...................
Mow Circuit Gear Pump Flow Test 48............
Mow Circuit Relief Pressure Test 50.............
Reel Motor Case Drain Flow Test 52............
ADJUSTMENTS 54.............................
Adjust Manifold Relief Valves 54................
Adjust Traction Control Assembly 55............
SERVICE AND REPAIRS 56.....................
General Precautions for Removing and
Installing Hydraulic System Components 56....
Flush Hydraulic System 57.....................
Filtering Closed−Loop Traction Circuit 58........
Hydraulic System Start−up 59..................
Gear Pump 60................................
Gear Pump Service 62........................
Piston (Traction) Pump Neutral System 64.......
Piston (Traction) Pump 66.....................
Piston (Traction) Pump Service 70..............
Piston Pump Crush Ring Replacement 72........
Front Wheel Motors 74........................
Rear Wheel Motor (Optional 3WD) 76...........
Wheel Motor Service 78.......................
Cutting Reel Motors 80........................
Cutting Reel Motor Service 82..................
Mow Control Manifold 86......................
Mow Control Manifold Service 88...............
Control Manifold Cartridge Valve Service 91......
Lift Cylinders 92..............................
Lift Cylinder Service 94........................
Lift Control Manifold 96........................
Lift Control Manifold Service 98.................
Power Steering Valve 100......................
Power Steering Valve Service 102...............
Steering Cylinder 104.........................
Steering Cylinder Service 106..................
Hydraulic Reservoir (Machines Equipped with
Turf Guardiant Leak Detector System) 108....
Hydraulic Reservoir (Machines Not Equipped with
Turf Guardiant Leak Detector System)110....
Leak Detector Tank (Machines Equipped with Turf
Guardiant Leak Detector System)112........
Leak Detector Solenoid Valve Assembly (Machines
Equipped with Turf Guardiant Leak Detector
System) 116................................
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)
DANFOSS STEERING UNIT TYPE OSPM SERVICE
MANUAL
Hydraulic
System