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 -- 65
Removal (Fig. 64)
1. Parkthe machine ona levelsurface, engage parking
brake, lower cutting decks and stop engine. Remove
key from the ignition switch.
2. Thoroughlycleanhydraulichoseendsandfittingson
hydraulic reservoir to prevent hydraulic system conta-
mination. Label hydraulic hoses to assist in installation.
3. Disconnect hydraulic hose (item 7) from adapter fit-
ting on bottom of reservoir to allow draining of reservoir.
Drain reservoir into a suitable container.
4. Disconnect remaining hydraulic hoses from reser-
voir.Allowhydrauliclinestodrainintoasuitablecontain-
er.Plugorcap openings ofreservoirand lines toprevent
contamination.
5. Remove hydraulic reservoir using Figure 64 as a
guide.
6. Remove suction strainer from reservoir. Discard O--
ring.
7. If hydraulic fittings are to be removed from reservoir,
mark fitting orientation to allow correct assembly. Re-
move fittings from reservoir and discard O--rings.
Inspection (Fig. 64)
1. Clean hydraulic reservoir and suction strainer with
clean solvent.
2. Inspect hydraulic reservoir for leaks, cracks or other
damage.
Installation (Fig. 64)
1. If fittings were removed from reservoir, lubricate and
place new O--rings onto fittings. Installfittings intoreser-
voir openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. Lubricate new suction strainer O--ring and install
onto strainer. Thread suction strainer into hydraulic res-
ervoir and torque strainer 105 to 115 ft--lb (143 to 155
N--m).
3. Position hydraulic reservoir to machine. Secure re-
servoir to frame with two (2) clamps (item 13), washer
head screws (item 12) and flange nuts (item 14).
4. Remove all plugs and caps placed in hoses and fit-
tings during the removal process.
5. Install hydraulic hoses to fittings on hydraulic reser-
voir in positions noted during removal (see Hydraulic
Hose and Tube Installation in the General Information
section of this chapter).
6. Fill hydraulic reservoir with new hydraulic fluid.
7. Operate machine. Check hydraulic lines and fittings
forleaks.Tightenanylooseconnections.Checkhydrau-
lic oil level and adjust if necessary.
Hydraulic
System