Toro GREENSMASTER 3100 Service Manual

Chapter 4
Hydraulic System
Table of Contents
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . 3
Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . 3
Hydraulic Fitting Installation . . . . . . . . . . . . . . . . 3
HYDRAULIC FLOW DIAGRAMS . . . . . . . . . . . . . . . 5
Traction, No. 1 Position . . . . . . . . . . . . . . . . . . . . 5
Traction, No. 2 Position . . . . . . . . . . . . . . . . . . . . 6
Traction, Reverse Position . . . . . . . . . . . . . . . . . 7
Reel Drive, Mowing Operation . . . . . . . . . . . . . . 8
Reel Drive, Lower Cutting Units . . . . . . . . . . . . . 9
Reel Drive, Raising Cutting Units . . . . . . . . . . . 10
Power Steering, R.H. Turn . . . . . . . . . . . . . . . . . 11
HYDRAULIC SCHEMATIC. . . . . . . . . . . . . . . . . . . 12
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 16
Slow Groundspeed in All Traction Selections . . 17
Slow or No Ground Speed in No. 1
and Reverse, No. 2 Appears Normal . . . . . . . . 18
No Increase in Speed From No. 1 to No. 2 . . . . 19
One or More Cutting Units Slow
or No Reel Drive Action. . . . . . . . . . . . . . . . . . . 20
All Reels Slow or Will Not Turn . . . . . . . . . . . . . 21
Mow Pedal Won’t Stay Engaged -
Reels Slow Down or Stop . . . . . . . . . . . . . . . . . 22
Cutting Unit(s) Drop During Transport. . . . . . . . 23
Cutting Units Lift Too Slowly or Not At All . . . . . 24
Lift Pedal Binding . . . . . . . . . . . . . . . . . . . . . . . 25
Center (#1) Cutting Unit
Operates In Raised Position . . . . . . . . . . . . . . . 25
Center (#1) Cutting Unit Drops Before
Front Cutting Units or Drops Too Fast. . . . . . . . 25
Steering Loss, Steering Wander or Free Play. . 26
TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Test Hook Up No. 1, Traction Pump
Flow and Traction Relief Setting . . . . . . . . . . . . 28
Test Hook Up No. 2, Traction
Motors Mechanical Drag, Valve
Bank Leakage,Traction Motors Efficiency . . . . . 28
Test Hook Up No. 3,
Reel Drive Pump Efficiency . . . . . . . . . . . . . . . . 32
Test Hook Up No. 4, Reel Drive Motor Flow,
Reel Drive Relief Setting, Reel Motor Efficiency 33
Test Hook Up No. 5, Steering Pump
Flow and Steering Pump Relief Setting. . . . . . . 35
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Lift and Mow Pedal Height Adjustment . . . . . . . 36
Traction Pedal Adjustment. . . . . . . . . . . . . . . . . 37
Rear Camshaft Adjustment . . . . . . . . . . . . . . . . 38
REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Reel Motor Removal and Installation. . . . . . . . . 39
Reel Motor Shaft Seal Replacement . . . . . . . . . 39
Reel Motor Repair . . . . . . . . . . . . . . . . . . . . . . . 40
Pump Removal and Installation. . . . . . . . . . . . . 42
Pump Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Control Valve Removal and Installation. . . . . . . 44
Relief Valve Removal and Installation . . . . . . . . 45
Control Valve Spool Seal Replacement. . . . . . . 46
Control Valve Internal Seal Replacement . . . . . 47
Control Valve No. 1 Spool Detent Replacement 48
Control Valve No. 4 Spool Detent Replacement 49
Lift Cylinder Removal and Installation . . . . . . . . 50
Lift Cylinder Repair . . . . . . . . . . . . . . . . . . . . . . 52
Wheel Motor Removal and Installation . . . . . . . 54
Wheel Motor Repair. . . . . . . . . . . . . . . . . . . . . . 55
Steering Cylinder Removal and Installation. . . . 58
Steering Cylinder Repair . . . . . . . . . . . . . . . . . . 59
Steering Control Unit Removal and Installation. 60
Steering Control Unit Repair . . . . . . . . . . . . . . . 61
Greensmaster
®
3100 Page 4 - 1 Table of Contents

Toro GREENSMASTER 3100 Specifications

General

Brand	Toro
Model	GREENSMASTER 3100
Category	Lawn Mower
Language	English