Service Manual
Table Of Contents
- Title Page
- Revision History
- Reader Comments
- Preface
- Table of Contents
- 1 - Safety
- 2 - Product Records and Maintenance
- 3 - Kubota Diesel Engine
- 4 - Hydraulic System
- Specifications
- General Information
- Hydraulic Schematic
- Hydraulic Flow Diagrams
- Special Tools
- Troubleshooting
- Testing
- Traction Circuit Relief Valve (R3) and (R4) Pressure Test
- Traction Circuit Charge Pressure Test
- Gear Pump (P3) Flow Test
- Front Wheel Motor Efficiency Test
- Piston (Traction) Pump Flow Test
- Relief Valve (PRV1) and (PRV2) Pressure Test
- Gear Pump (P1) and (P2) Flow Test
- Deck Motor Efficiency Test
- Lift Relief Valve (PRV) Pressure Test
- Gear Pump (P4) Flow Test
- Lift Cylinder Internal Leakage Test
- Steering Relief Valve (R10) Pressure Test
- Steering Cylinder Internal Leakage Test
- Service and Repairs
- General Precautions for Removing and Installing Hydraulic System Components
- Check Hydraulic Lines and Hoses
- Flush Hydraulic System
- Filtering Closed--Loop Traction Circuit
- Hydraulic System Start--up
- Hydraulic Reservoir
- Hydraulic Pump Drive Shaft
- Hydraulic Pump Assembly
- Piston (Traction) Pump Service
- Gear Pump Service
- Front Wheel Motors
- Rear Wheel Motors
- Wheel Motor Service
- CrossTrax AWD Manifold
- CrossTrax AWD Manifold Service
- Deck Control Manifold
- Deck Control Manifold Service
- Cutting Deck Motor
- Cutting Deck Motor Service
- Lift Control Manifold
- Lift Control Manifold Service
- Lift Cylinder
- Lift Cylinder Service
- Steering Control Valve
- Steering Control Valve Service
- Steering Cylinder
- Steering Cylinder Service
- Oil Cooler
- 5 - Electrical System
- General Information
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Adjustments
- Component Testing
- Ignition Switch
- Indicator Lights
- Hour Meter
- Temperature Gauge
- PTO Switch
- Headlight Switch
- Seat Switch
- Joystick Raise and Lower Switches
- Traction Neutral Switch
- Parking Brake Switch
- Mow/Transport Switch
- Start Relay
- Main Power and Glow Relays
- Toro Electronic Controller (TEC)
- Fuses
- Diode Assembly
- Fusible Link Harness
- Hydraulic Solenoid Valve Coil
- Temperature Sender
- High Temperature Shutdown Switch
- Oil Pressure Switch
- Fuel Stop Solenoid
- Fuel Pump
- Service and Repairs
- 6 - Chassis
- 7 - Cutting Decks
- 8 - Foldout Drawings
- Hydraulic Schematic
- Electrical Schematic Sheet 1 of 2 (Serial numbers below 315000000)
- Electrical Schematic Sheet 2 of 2 (Serial numbers below 315000000)
- Eclectrical Schematic (Serial numbers 315000001 to 403430000)
- Eclectrical Schematic (Serial numbers above 403430001)
- Main Wire Harness Drawing (Serial numbers below 315000000)
- Main Wire Harness Diagram (Serial numbers below 315000000)
- Main Wiring Harness Drawing (Serial numbers 315000001 to 403430000)
- Main Wiring Harness Diagram (Serial numbers 315000001 to 403430000)
- Main Wiring Harness Drawing (Serial numbers 403430001 to 405699999)
- Main Wiring Harness Diagram (Serial numbers 403430001 to 405699999)
- Main Wiring Harness Drawing (Serial numbers above 405700000)
- Main Wiring Harness Diagram (Serial numbers above 405700000)
- Seat Wire Harness Drawing
- Seat Wire Harness Diagram
- Engine Wire Harness Drawing
- Engine Wire Harness Diagram
Groundsmaster 4300--D Hydraulic SystemPage 4 -- 63
Hydraulic System Start--up
NOTE: When initially starting the hydraulic system with
new or rebuilt components such as pumps, wheel mo-
tors or lift cylinders, it is important that this start--up pro-
cedure be used. This procedure reduces the chance of
damaging the system or its components from not purg-
ing the system of air.
1. After the hydraulic system components have been
properly installed and if the traction pump was rebuilt or
replaced, make sure traction pump housing is at least
half full of clean hydraulic oil.
2. Makesureallhydraulicconnectionsandlinesarese-
cured tightly.
3. Drain, flush and refill hydraulic system and change
hydraulic oil filters if component failure was severe or
system is contaminated (see Flush Hydraulic System in
this section).
4. Make sure hydraulic reservoir is full. Add correct oil
if necessary.
5. Checkcontrol linkage for proper adjustment, binding
or broken parts.
6. Disconnect wire harness electrical connector from
the engine fuel stop solenoid to prevent the engine from
starting.
7. Make sure traction pedal is in neutral and the PTO
switch is OFF. Turn ignition key switch to start; engage
starter for ten (10) seconds to prime hydraulic pumps.
Wait fifteen (15) seconds to allow the starter motor to
cool and then repeat cranking procedure again.
8. Connect wire harness electrical connector to fuel
stop solenoid to allow engine to start.
9. Make sure traction pedal is in neutral and the PTO
switch is OFF. Start engine and run it at low idle. The
chargepump should pick up oiland fill the hydraulic sys-
tem. If there is no indication of fill in thirty (30) seconds,
stop the engine and determine the cause.
10.If the traction pump w as replaced or rebuilt, run the
traction unit so the wheels turn slowly for ten (10) minu-
tes.
11.Operate the traction unit (including steering and cut-
ting deck lift/lower) by gradually increasing the work
load to full over a ten (10) minute period.
12.Stop the machine. Check oil level in hydraulic reser-
voir and add correct oil if necessary. Check hydraulic
components for leaks and tighten any loose connec-
tions.
Hydraulic
System