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 Over 27000000 . . . . . . . . . . . . . . . . 13
HYDRAULIC FLOW DIAGRAMS . . . . . . . . . . . . . . . 14
Traction Forward and Reverse . . . . . . . . . . . . . . . . 14
Raise and Lower Cutting Units (Serial Number
Under 260999999) . . . . . . . . . . . . . . . . . . . . . . . . 16
Raise and Lower Cutting Units (Serial Number
Above 270000000) . . . . . . . . . . . . . . . . . . . . . . . . 18
Mow and Backlap (Serial Number
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 Over 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 Over 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
Under 260999999) . . . . . . . . . . . . . . . . . . . . . . . . 20
Mow and Backlap (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
ROSS TORQMOTOR
TM
MG, MF, MP, MB, ME, AND
MJ SERIES SERVICE PROCEDURE (SERVICE
MANUAL 2704--003)
with Serial Number Under 220999999) . . . . . . . 54
Adjust Manifold Relief Valves (R1 and R2) . . . . . . 54
SAUER/DANFOSS STEERING UNIT TYPE OSPM
SERVICE MANUAL
Greensmaster 3250--D
Page 4 -- 1
Hydraulic System (Rev. I)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Greensmaster 3250 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
(0 votes, average: 0 out of 5)