Toro 30411 - Page 43

Rev. E
Groundsmaster 4100--D Hydraulic SystemPage 4 -- 1
Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS 2.............................
GENERAL INFORMATION 3.....................
Hydraulic Hoses 3............................
Hydraulic Fitting Installation 3...................
Towing Traction Unit 5.........................
Check Hydraulic Fluid 5.......................
HYDRAULIC SCHEMATIC 7.....................
HYDRAULIC FLOW DIAGRAMS 8................
Traction Circuit 8..............................
Lower Cutting Deck 10........................
Raise Cutting Deck 12.........................
Mow Circuit 14...............................
Steering Circuit 16............................
SPECIAL TOOLS 18............................
Hydraulic Pressure Test Kit 18..................
Hydraulic Tester (Pressure and Flow) 18.........
Hydraulic Test Fitting Kit 19.....................
Measuring Container 19.......................
TROUBLESHOOTING 20........................
TESTING 23...................................
Test No. 1: Traction C ircuit Charge Pressure 24...
Test No. 2: Traction Circuit Relief Pressure 26....
Test No. 3: Cutting Deck Circuit Pressure 28......
Test No. 4: Cutting Deck Gear Pump Flow 30.....
Test No. 5: Cutting Deck Manifold
Relief Pressure 32...........................
Test No. 6: Cutting Dec k Motor Case
Drain Leakage 34...........................
Test No. 7: Steering Circuit Relief Pressure 36....
Test No. 8: Lift/Lower Circuit R elief Pressure 38...
Test No. 9: Steering and Lift/Lower
Gear Pump Flow 40.........................
Test No. 10: Counterbalance Pressure 42........
Test No. 11: Rear Traction Circuit (RV5)
Relief Pressure 44...........................
Test No. 12: Traction Circuit Reducing
Valve (PR) Pressure 46......................
ADJUSTMENTS 48.............................
Adjust Cutting Deck Flow Control Valve 48.......
SERVICE AND REPAIRS 49.....................
General Precautions for Removing and
Installing Hydraulic System Components 49....
Check Hydraulic Lines and Hoses 49............
Flush Hydraulic System 50.....................
Charge Hydraulic System 51...................
Gear Pump 52................................
Gear Pump Service 54.........................
Piston (Traction) Pump 58......................
Piston (Traction) Pump Service 60..............
Piston Pump Control Assembly 64..............
Hydraulic Control Manifold: 4 Wheel Drive 66.....
Hydraulic Control Manifold Service:
4 Wheel Drive 68............................
Hydraulic Control Manifold: Deck Drive 70........
Hydraulic Control Manifold Service: Deck Drive 72
Hydraulic
Control Manifold: Cutting Deck
Lift/Lower 74................................
Hydraulic Control Manifold Service: Cutting
Deck Lift/Lower 75..........................
Hydraulic Control Manifold: Filter Manifold 76.....
Hydraulic Control Manifold Service:
Filter Manifold 77............................
Rear Axle Motor 78...........................
Front Wheel Motors 80........................
Rear Axle/Front Wheel Motor Service 82.........
Cutting Deck Motor 85.........................
Cutting Deck Motor Service 86..................
Lift/Lower Control Valve 90.....................
Lift/Lower Control Valve Service 92..............
Steering Valve 94.............................
Steering Valve Service 96......................
Front Deck Lift Cylinder 98.....................
Front Deck Lift Cylinder Service 100.............
Wing Deck Lift Cylinder 102....................
Wing Deck Lift Cylinder Service 104.............
Steering Cylinder 106..........................
Steering Cylinder Service 108..................
Hydraulic Reservoir 110.......................
Hydraulic Oil Cooler 112.......................
Hydraulic
System