Toro Greensmaster 3250-D 04383 - Chapter 4 Hydraulic System

Rev. J
Greensmaster 3250--D
Hydraulic System (Rev. I)
Page 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 SCHEMATICS 10...................
Serial Number Under 220999999 10.............
Serial Number From 230000000 To 230001500 11.
Serial Number From 230001501 To 260999999 12.
Serial Number Above 270000000 13.............
HYDRAULIC FLOW DIAGRAMS 14...............
Traction Forward and Reverse 14................
Raise and Lower Cutting Units
(Serial Number Under 260999999) 16..........
(Serial Number Above 270000000) 18..........
Mow and Backlap
(Serial Number Under 260999999) 20..........
(Serial Number Above 270000000) 22..........
Right and Left Turn 24..........................
SPECIAL TOOLS 26............................
TROUBLESHOOTING 28........................
TESTING 32...................................
Precautions for Hydraulic Testing 32.............
Traction Drive Hydrostat (P3) Flow Test 34........
Wheel Motor Efficiency Test 36..................
Charge Relief Valve (R4) Pressure Test 38........
Gear Pump (P2) Flow and Implement Relief
Valve (R5) Pressure Test 40...................
Lower Cutting Units Relief Valve (R2)
Pressure Test 42.............................
Gear Pump (P1) Flow Test 44...................
Mow Circuit Relief Valve (R1) Pressure Test 46....
Reel Motor Case Drain Flow Test 48.............
Steering Control Valve Test 50...................
ADJUSTMENTS 52.............................
Adjust Transmission for Neutral 52...............
Adjust Transport Speed 52......................
Adjust Mowing Speed 53.......................
Adjust Cutting Unit Drop Speed 53...............
Adjust Implement Relief Valve (R5) (Machines
with Serial Number Under 220999999) 54.......
Adjust Manifold Relief Valves (R1 and R2) 54......
SERVICE AND REPAIRS 55.....................
General Precautions for Removing and
Installing Hydraulic System Components 55.....
Gear Pump 56................................
Gear Pump Service 58.........................
Hydraulic System Start--up 59...................
Hydrostatic Transmission 60....................
Piston Pump Service 63........................
Piston Pump Crush Ring Replacement 64
.........
Change
Hydraulic Oil
and Filter 65...............
Wheel Motors 66..............................
Wheel Motor Service 70........................
Flush Hydraulic System 71......................
Implement Relief Valve 72......................
Reel Motors 74................................
Reel Motor Service
Serial Number Under 220999999 76............
Serial Number Over 230000000 78.............
Oil Cooler (If Equipped) 82......................
Lift Cylinders 84...............................
Lift Cylinder Service 86.........................
Hydraulic Manifold 88..........................
Hydraulic Manifold Service
Serial Number Under 260999999 90............
Serial Number Above 270000000 92...........
Flow Control and Backlap Valves (If Equipped on
Serial Number Under 260999999) 96...........
Rear Lift Cylinder Flow Control Valve 99..........
Steering Control Valve 100......................
Steering Control Valve Service
Serial Number Under 220999999 102...........
Serial Number From 230000000 to 270999999106
Serial Number Above 280000000 110..........
Steering Cylinder 112..........................
Steering Cylinder Service 114...................
Hydraulic Reservoir 116........................
Leak Detector 118.............................
EATON GEAR PUMPS, REPAIR INFORMATION, SE-
RIES 26, MODEL 26000, MULTIPLE GEAR PUMPS
EATON, MEDIUM DUTY PISTON PUMP, REPAIR
INFORMATION, MODEL 70160 VARIABLE DIS-
PLACEMENT PISTON PUMP
ROSS TORQMOTOR
TM
MG, MF, MP, MB, ME, AND
MJ SERIES SERVICE PROCEDURE (SERVICE
MANUAL 2704--003)
SAUER/DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Hydraulic
System