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--DPage 3 -- 14Kubota Diesel Engine
9. Disconnect hydraulic transmission drive shaft from
engine (see Hydraulic Transmission Drive Shaft Re-
moval in the Service and Repairs section of Chapter 4
-- Hydraulic System). Support drive shaft away from en-
gine.
10.Disconnect wire harness connectors from the follow-
ing engine components:
NOTE: Before disconnecting wire harness connectors,
label all electrical leads for assembly purposes.
A. Alternator connector and stud.
B. Oil pressure switch located near the engine oil fil-
ter.
C. Connector , fusible link connector and positive
battery cable from the starter motor.
D. High temperature shut down switch and temper-
ature sender located on the water pump housing.
E. Fuel stop solenoid on injector pump.
F. Negative battery cable and wire harness ground
from injector pump (Fig. 12).
G. Glow plug strip.
11.Remove engine from machine:
A. Attach short section of chain between lift tabs lo-
cated on each end of the cylinder head.
B. Connect a hoist or lift at the center of the short
section of chain. Apply enough tension on the short
chain so that the engine will be supported.
C. Remove fasteners that secure the engine (with
brackets) to the engine mounts.
CAUTION
One person should operate hoist or lift while a
second person guides the engine out of the ma-
chine.
IMPORTANT: Make sure to not damage the en-
gine, fuel hoses, hydraulic lines, electrical har-
ness, radiator, battery or other parts while
removing the engine.
D. Raise engine and remove toward front of ma-
chine.
12.If necessary, remove engine brackets (item 27) from
engine.
Installation (Fig. 9)
1. Locate machine on alevel surface with cutting decks
lowered and key removed from the ignition switch.
Chock wheels to keep the machine from moving.
2. Make sure that all parts removed from the engine
during maintenance or rebuilding are installed to the en-
gine.
3. If engine brackets were removed from the engine,
secure brackets to engine with lock washers and cap
screws. Torque cap screws from 34 to 42 ft--lb (47 to
56 N--m).
4. Install engine to machine.
A. Attach short section of chain between lift tabs lo-
cated on each end of the cylinder head
B. Connect a hoist or lift at the center of the short
section of chain. Apply enough tension on the short
chain so that the engine can be supported.
CAUTION
One person should operate hoist or lift while a
second person guides the engine into the ma-
chine.
IMPORTANT: Make sure to not damage the en-
gine, fuel hoses, hydraulic lines, electrical har-
ness, radiator, battery or other parts while
installing the engine.
C. Lower engine to the machine frame. Make sure
fastener holes of the engine brackets are aligned
with the holes in the engine mounts.
D. Insert cap screw down through each engine
bracket and mount. Place spacer, snubbing washer
and then flange nut on four (4) cap screws. Tighten
fasteners to secure engine to engine mounts.
5. Connect hydraulic transmission drive shaft to engine
(see Hydraulic Transmission Drive Shaft Installation in
the Service and Repairs section of Chapter 4 -- Hydrau-
lic System).
6. Connect all wire harness connectors to correct en-
gine components.