Troubleshooting - Simplicity Legacy Series Service & Repair Manual

ALTERNATOR
All models contain an alternator to charge the battery
and supply the tractor with electrical energy during oper-
ation.
Refer to the engine manufacturer's manual for specific
information regarding engine component testing and
replacement.
To determine if the charging function of the alternator is
operating correctly, a basic check can be performed.
Refer to the Battery Charging Voltage Test in this sec-
tion.
TACHOMETER
All models contain an electronic tachometer to measure
the engine RPM for indication on the instrument panel.
Refer to the engine manufacturer's manual for specific
information regarding engine component testing and
replacement.
If after replacing the components on the engine, the
tachometer continues to malfunction, replace the instru-
ment panel.
VOLTAGE REGULATOR
All models contain a voltage regulator to regulate the
current draw on the alternator during operation.
Depending on the engine manufacturer and model, the
voltage regulator is either installed on the engine or
enclosed in the alternator as a complete unit.
Refer to the engine manufacturer's manual for specific
information regarding engine component testing and
replacement.
7 Electrical System Service
Location and Replacement

TROUBLESHOOTING

The following troubleshooting flow charts provide an
easy reference to the most common electrical problems
which may occur. It assumes that there is an actual
defective component in the electrical system and that all
mechanical and fuel-related malfunctions have been
fixed. It does not address "operator error" issues and
assumes that the technician has exhausted all common
sense solutions to simple problems like loose connectors
and bare wires shorting to the frame. Locate the problem
you are having, then check all the components in the
order listed.
Finally, always establish a clear idea why a problem has
occurred and take steps to ensure that it doesn't happen
again. Remember, failure of a small component can
often be indicative of potential failure or incorrect func-
tioning of a more important component or system.
Refer to the following Component Test section for specif-
ic component testing procedures.
A. Check/Clean Wires and Connectors
B. Check/Clean Ground Cable
C. Battery Tests
D. Isolated Battery Voltage Check
E. Charging Voltage Check
F. Preheat Timer Test
G. Glow Plug Relay Test
H. Ignition Switch Tests
I. PTO Switch Test
J. Accessory Power Connector Test
K. Cruise Control Switch Test
L. Height of Cut Switch Test
M. Brake Pedal Switch Tests
N. Seat Switch Safety Interlock Test
O. Seat Switch Test
P. Circuit Breaker Test
Q. PTO Clutch
R. Headlight Switch Test
S. Fuel Solenoid Test
T. Voltage Regulator
U. Alternator
V. Fuel Level Signal Test
W. Fuel Level Sensor Test
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