Service Manual
Table Of Contents
- Title Page
- Revision History
- Reader Comments
- NOTES
- Preface
- Table of Contents
- Chapter 1 : Safety
- Chapter 2 : Specifications and Maintenance
- Chapter 3 : Troubleshooting
- GEARS – The Systematic Approach to Defining, Diagnosing and Solving Problems
- General Hydraulic System Problems
- Traction Circuit Problems
- PTO Problems
- Lift/Lower Circuit Problems
- Steering Circuit Problems
- Starting Problems
- General Run and Transport Problems
- Cutting Deck (PTO) Operating Problems
- Cutting Deck Lift/Lower Problems
- Operator Advisories
- Using the InfoCenter Display for Troubleshooting
- Machine Faults
- Engine Faults
- Factors That Can Affect Quality of Cut and Clipping Dispersion
- Chapter 4 : Yanmar Diesel Engine
- Chapter 5 : Hydraulic System
- General Information
- Hydraulic Schematic
- Hydraulic Flow Diagrams
- Testing
- Before Performing Hydraulic Tests
- Precautions for Hydraulic Testing
- Which Hydraulic Tests Are Necessary?
- Traction Circuit Charge Pressure Test (Using Pressure Gauge)
- Traction Circuit Relief Pressure Test (Using Pressure Gauge)
- Counterbalance Pressure Test (Using Pressure Gauge)
- Piston (Traction) Pump Flow Test (Using Tester with Pressure Gauge & 40 GPM Flow Meter)
- Cutting Deck Circuit Pressure Test (Using Pressure Gauge)
- Cutting Deck Circuit Relief Pressure Test (Using Tester with Pressure Gauge and 40 GPM Flow Meter)
- Cutting Deck Motor Case Drain Leakage Test (Using Tester with Pressure Gauge & 40 GPM Flow Meter)
- Lift/Lower Circuit Relief Pressure Test (Using Pressure Gauge)
- Steering Circuit Relief Pressure Test (Using Pressure Gauge)
- Steering Cylinder Internal Leakage Test
- Gear Pump (PTO, Steering, Deck Lift/Lower and Traction Charge Circuits) Flow Test (Using Tester with Pressure Gauges and Flow Meter)
- Adjustments
- Service and Repairs
- General Precautions for Removing and Installing Hydraulic System Components
- Check Hydraulic Lines and Hoses
- Priming Hydraulic Pumps
- Flush Hydraulic System
- Charge Hydraulic System
- Filtering Closed−Loop Traction Circuit
- Hydraulic Reservoir
- Gear Pump
- Gear Pump Service
- Traction Circuit
- Piston (Traction) Pump
- Piston (Traction) Pump Service
- Front Wheel Motors
- Rear Wheel Motors
- Wheel Motor Service
- Traction Control Manifold
- Traction Control Manifold Service
- Brake Release Manifold
- Brake Release Manifold Service
- Cutting Deck Circuit
- Cutting Deck Motor
- Cutting Deck Motor Service
- Cutting Deck Control Manifolds
- Cutting Deck Control Manifold Service
- Steering and Cutting Deck Lift Circuits
- Steering Control Valve (For machines serial number below 403450000)
- Steering Control Valve (For machines serial number above 403450001)
- Steering Control Valve Service (For machines serial number below 40345000)
- Steering Control Valve Service (For machines serial number above 403450001)
- Steering Cylinders
- Steering Cylinder Service
- Front Cutting Deck Lift Cylinders
- Front Cutting Deck Lift Cylinder Service
- Wing Cutting Deck Lift Cylinders
- Wing Cutting Deck Lift Cylinder Service
- Steering/Deck Lift Control Manifold
- Steering/Deck Lift Control Manifold Service
- Cartridge Valve Service
- Hydraulic Oil Cooler
- Chapter 6 : Electrical System
- General Information
- Electrical System Operation
- InfoCenter Display
- Adjustments
- Component Testing
- Fusible Link Harness
- Mega Fuses
- Fuses
- Battery−Disconnect Switch
- Toro Electronic Controllers (TECs)
- Key Switch
- PTO Switch
- Cutting Deck Raise/Lower Switches
- Throttle Switch
- High/Low Range Traction Speed Switch
- Cruise Control Switch
- Headlight Switch
- Turn Signal Switch
- Hazard Switch
- Parking Brake Switch
- Horn Button
- Contactors
- Seat Switch
- Windshield Wiper/Washer Switch (Groundsmaster 5910)
- Air Conditioning Switch (Groundsmaster 5910)
- Fan Speed Switch (Groundsmaster 5910)
- Work Light and Beacon Switches (Groundsmaster 5910 − Optional)
- Relays with Four (4) Terminals
- Relays with Five (5) Terminals
- Hydraulic Solenoid Valves
- Air Filter Service Indicator
- Fuel Sender
- Fuel Pump
- Hydraulic Oil Temperature Sender
- CAN−bus Terminator Resistor
- Resistor Assemblies
- Diode Assemblies
- Audible Alarm
- Traction Pedal Position Sensor
- Piston (Traction) Pump Control Solenoid Coils
- Cutting Deck Position Switches
- 24 Volt Cooling Fans
- 24 Volt Alternator
- 24 Volt Voltage Divider
- Fan Speed Switch (Machines with Two−Post ROPS Extension Operator Fan Kit)
- Resistor Module (Machines with Two−Post ROPS Extension Operator Fan Kit)
- Service and Repairs
- Chapter 7 : Chassis
- General Information
- Service and Repairs
- Wheels
- Steering Column (For machines serial number below 403450000)
- Steering Column (For machines serial number above 403450001)
- Rear Axle
- Rear Axle Service
- Front Deck Lift Arms
- Wing Deck Lift Arms
- Wing Deck Lift Arm Joint Yoke
- Wing Deck Impact Arm Assembly
- Console Arm
- Traction Pedal
- Operator Seat
- Operator Seat Service
- Operator Seat Suspension
- Hood and Lower Shrouds
- Chapter 8 : Cutting Decks
- Chapter 9 : Operator Cab
- Appendix A: Foldout Drawings
- Electrical Drawing Designations
- Hydraulic Schematic
- Electrical Schematic (machine serial numbers below 316000200)
- Electrical Schematic (machine serial numbers below 316000200)
- Electrical Schematic (machine serial numbers 316000201 to 399999999)
- Electrical Schematic (machine serial numbers 316000201 to 399999999)
- Electrical Schematic (machine serial numbers 400000000 to 403450000)
- Electrical Schematic (machine serial numbers 400000000 to 403450000)
- Electrical Schematic (machine serial numbers 403450001 to 405600000)
- Electrical Schematic (machine serial numbers 403450001 to 405600000)
- Electrical Schematic (machine serial numbers 405600001 to 408000000)
- Electrical Schematic (machine serial numbers 405600001 to 408000000)
- Electrical Schematic (machine serial numbers above 408000000)
- Electrical Schematic (machine serial numbers above 408000000)
- Operator Platform Wire Harness Drawing (machine serial numbers below 316000200)
- Operator Platform Wire Harness Diagram (machine serial numbers below 316000200)
- Operator Platform Wire Harness Diagram (machine serial numbers below 316000200)
- Operator Platform Wire Harness Drawing (machine serial numbers 316000201 to 316999999)
- Operator Platform Wire Harness Diagram (machine serial numbers 316000201 to 316999999)
- Operator Platform Wire Harness Diagram (machine serial numbers 316000201 to 316999999)
- Operator Platform Wire Harness Diagram (machine serial numbers 400000000 to 403450000)
- Operator Platform Wire Harness Diagram (machine serial numbers 400000000 to 403450000)
- Operator Platform Wire Harness Diagram (machine serial numbers 400000000 to 403450000)
- Operator Platform Wire Harness Diagram (machine serial numbers 403450001 to 405600000)
- Operator Platform Wire Harness Diagram (machine serial numbers 403450001 to 405600000)
- Operator Platform Wire Harness Diagram (machine serial numbers 403450001 to 405600000)
- Operator Platform Wire Harness Drawing (machine serial numbers 405600001 to 408000000)
- Operator Platform Wire Harness Diagram (machine serial numbers 405600001 to 408000000)
- Operator Platform Wire Harness Drawing (machine serial numbers above 408000000)
- Operator Platform Wire Harness Diagram (machine serial numbers above 408000000)
- Rear Wire Harness Drawing (machine serial numbers below 316000200)
- Rear Wire Harness Diagram (machine serial numbers below 316000200)
- Rear Wire Harness Drawing (machine serial numbers 316000201 to 403450000)
- Rear Wire Harness Drawing (machine serial numbers 316000201 to 403450000)
- Rear Wire Harness Drawing (machine serial numbers 403450001 to 405600000)
- Rear Wire Harness Drawing (machine serial numbers 403450001 to 405600000)
- Rear Wire Harness Drawing (machine serial numbers 405600001 to 408000000)
- Rear Wire Harness Diagram (machine serial numbers 405600001 to 408000000)
- Rear Wire Harness Drawing (machine serial numbers above 408000000)
- Rear Wire Harness Diagram (machine serial numbers above 408000000)
- Engine Wire Harness Drawing (machine serial numbers 316000001 to 316999999)
- Engine Wire Harness Drawing (machine serial numbers 316000001 to 316999999)
- Engine Wire Harness Drawing (machine serial numbers 400000000 to 403450000)
- Engine Wire Harness Drawing (machine serial numbers 400000000 to 403450000)
- Engine Wire Harness Drawing (machine serial numbers above 403450001)
- Engine Wire Harness Drawing (machine serial numbers above 403450001)
- Engine DPF Wire Harness Drawing (machine serial numbers above 408000000)
- NO TITLE
- Cab Power Supply Wire Harness (Machine serial numbers below 316000200)
- Cab Headliner Wire Harness Drawing (Machine serial numbers below 308000000)
- Cab Headliner Wire Harness Diagram (Machine serial numbers below 308000000)
- Cab Headliner Wire Harness Drawing (Machine serial numbers above 308000000)
- Cab Headliner Wire Harness Diagram (Machine serial numbers above 308000000)
- Wire Harness Diagram − Two−Post ROPS Extension
- Wire Harness Diagram − Two−Post ROPS Extension
Piston(Traction)PumpFlowTest(UsingTesterwithPressure
Gauge&40GPMFlowMeter)
AM3
TO STEERING/DECK LIFT
4.15 CID
21.7 GPM
M4
M5
0.032” 0.032”
S2
1.03 CID
2.11 CID
21.7 GPM
M14
TRACTION PUMP
2.11 CID
S1
ENGINE RATED
SPEED: 2530 RPM
B
MB
MA
A
3M2L
E
L4
42.7 GPM
FORWARD
REVERSE
10.6 GPM
5080
PSI
5080
PSI
MANIFOLD PORT P1
MANIFOLD CH2 PORT
TRACTION
MANIFOLD
FROM STEERING/DECK LIFT
290
PSI
TO TRACTION
MANIFOLD
CH PORT
TO FRONT DECK
MANIFOLD
TO LEFT DECK
MANIFOLD
P1 PORT
P1 PORT
FROM HYDRAULIC
RESERVOIR
P1
P2
TESTER
FROM RETURN
FILTER
FROM HYDRAULIC
RESERVOIR
g287750
Figure55
Thepiston(traction)pumpowtestmeasurespistonpumpoutput(ow)inhigh
range(transport).Duringthistest,pumploadiscreatedattheowmeterusing
theadjustableloadvalveonthetester.
IMPORTANT
Atnormalenginehighidlespeed,tractioncircuitowforthe
Groundsmaster5900/5910exceeds150LPM(40GPM).Forthistest,
use40GPMHydraulicTester#AT40002(pressureandow)and
HydraulicHoseKit(seeSpecialTools(page2–15))andmakesure
thatenginespeedisadjustedasdescribedinthefollowingtest
procedure.Ifengineisrunatnormalhighidlespeedwhiletesting,
hydraulictesterdamagewilllikelyoccur.
Note:Twopeoplewillberequiredtocompletethefollowingtestprocedure.
Note:Beforeperformingpistonpumpowtest,makesurethattractionspeed
limitissetto100%inforwardtransportmodeusingtheInfoCentersettingsmenu.
Groundsmaster
®
5900&5910
Page5–47
HydraulicSystem:Testing
16227SLRevE