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 Schematics
- Hydraulic Flow Diagrams
- Special Tools
- Troubleshooting
- Testing
- Traction System Operation Testing
- Charge Relief Valve Pressure Test (Using Pressure Gauge)
- Transmission Piston Pump Flow Test (Using Tester with Pressure Gauges and Flow Meter)
- Traction Relief Valve Pressure Test (Using Tester with Pressure Gauges and Flow Meter)
- Wheel Motor Efficiency Test (Using Tester with Pressure Gauges and Flow Meter)
- PTO Pressure Valve Test (Using Pressure Gauge)
- Implement Relief Pressure Test (Using Pressure Gauge)
- Gear Pump Flow Test (Using Tester with Pressure Gauges and Flow Meter)
- Lift Cylinder Internal Leakage Test
- Service and Repairs
- General Precautions for Removing and Installing Hydraulic System Components
- Flush Hydraulic System
- Charge Hydraulic System
- Hydraulic Tank
- Wheel Motors
- Wheel Motor Service
- Transmission
- Transmission Service
- Gear Pump
- Gear Pump Service
- Manual Lift Control Valve (SN Below 313000000)
- Manual Lift Control Valve Service (SN Below 313000000)
- Lift Control Manifold (SN Above 313000000)
- Lift Control Manifold Service (SN Above 313000000)
- Polar TracTM Hydraulic Control Valve
- Polar TracTM Hydraulic Control Valve Service
- Lift Cylinder
- Lift Cylinder Service
- Polar TracTM Lift Cylinder
- Polar TracTM Lift Cylinder Service
- Oil Cooler
- 5 - Electrical System
- Electrical Schematics and Diagrams
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Component Testing
- Ignition Switch
- Indicator Lights
- Hour Meter
- PTO Switch
- Neutral Switches
- Seat Switch
- Parking Brake Switch (SN Below 310000000)
- Parking Brake Switch (SN Above 310000000)
- Standard Control Module
- Standard Control Module Logic Chart
- PTO Solenoid Valve Coil
- Lift Control Manifold Solenoid Valve Coils (SN Above 313000000)
- Fusible Link Harness
- Diode Assembly
- Glow Relay
- High Temperature Warning Switch
- High Temperature Shutdown Switch
- Dual Temperature Switch (Polar TracTM Machines)
- Deck Lift/Lower Switch (SN Above 313000000)
- Fuel Pump
- Fuel Stop Solenoid
- Glow Controller
- Service and Repairs
- 6 - Chassis
- 7 - Cutting Deck
- 8 - Foldout Diagrams
- Electrical Drawing Designations
- Hydraulic Schematics
- Hydraulic Schematic (SN Below 313000000)
- Hydraulic Schematic (SN Below 313000000) with Rear Attach Lift Kit
- Hydraulic Schematic (SN Below 313000000) with Polar Trac Installed)
- Hydraulic Schematic (SN Below 313000000) with Polar Trac and Rear Attach Lift Kit
- Hydraulic Schematic (SN From 313000001 to 314999999)
- Hydraulic Schematic (SN Above 315000000)
- Electrical Schematics
- Circuit Diagrams
- Wire Harness
Groundsmaster 7200/7210 Page 5 - 15 Electrical System
Seat Switch
The seat switch is normally open and closes when the
operator is o n the seat. If the traction system or PTO
switch is engaged when the operator raises out of the
seat, the engine will stop. The seat switch and its electri-
cal connector (Fig. 15) are located directly under the
seat.
The Standard Control Module (SCM) monitors the sta-
tus of the seat switch. If the ignition switch is in the ON
position and the seat is occupied, the SCM in seat input
LED should be illuminated.
Testing
1. Before disconnecting the seat switch for testing, the
switchanditscircuitwiringshouldbetestedasaSCM
input (see Standard Control Module in this section).
2. If the SCM verifies that the seat switch and circuit wir-
ing are functioning correctly, no further switch testing is
necessary.
3. If the SCM determines that the seat switch and circuit
wiring are not functioning correctly, test seat switch as
follows:
A. Make sure ignition switch is in the O FF position.
Tilt seat assembly up to gain access to seat switch
electrical connections.
NOTE: There is a short wire harness that is used to
connect the sen at switch to the main wire harness
of the machine. This seat switch harness is between
the seat and the seat plate.
B. Disconnect machine wire harness electrical con-
nector from the seat switch harness electrical lead
under the operator seat (Fig. 15).
C. Check the continuity of the seat switch by con-
necting a multimeter (ohms setting) across t he seat
switch harness connector terminals.
D. With no pressure on the seat, there should be no
continuity between the seat switch harness termi-
nals.
E. Press directly onto the seat switch through the
seat cushion. There should be continuity between
the seat switch harness terminals as the seat cush-
ion approaches the bottom of its travel indicating that
the seat switch is functioning.
WARNING
If seat switch service is necessary, remove seat
from seat plate to access switch. To p revent injury,
DO NOT attempt to reach switch through openings
in seat plate.
F. If the continuity test is incorrect, remove seat (see
Operator Seat in Chapter 6 - Chassis). Check seat
switch and/or seat switch harness for continuity. Re-
pair or replace components as needed.
G. If the seat switch tests correctly and a circuit prob-
lem still exists, check machine wire harness (see
Electrical Schematics and Circuit Drawings in Chap-
ter 8 - Foldout Diagrams).
H. After seat switch testing is complete, connect ma-
chine wire harness connector to seat switch electri-
cal lead. Lower seat assembly. Check seat switch
operation.
1. Seat harness connector 2. Machine wire harness
Figure 15
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Electrical
System