Cub Cadet CC 500 EL Shop Manual page 16

ELECTRICAL SYSEM
3. Connect a DVOM, set to read AC voltage, to the
AC input (the black and white wires from the har-
ness) to the rectifier. See Figure 2.20.
AC input
Figure 2.20
4. Turn the mower on. Read the voltage on the
DVOM.
NOTE: The meter should read between 110 -
125 volts.
5. Turn off the mower.
6. Connect the DVOM, set to read DC voltage, to
the DC outputs (the wires going to the motor).
7. Turn the mower on. Read the voltage on the
DVOM.
NOTE: It is normal for the DC voltage to be a lit-
tle higher than the AC voltage, but it should be
close to the AC voltage.
AC input
Motor
An electric motor is a device that converts electrical
energy into mechanical force. The motor used on this
mower is not serviceable. The motor is diagnosed by a
process of elimination.
Test the circuit breaker first. then test the switch and
the rectifier. If they are working properly but the motor
is not, replace the motor.
Returning to service
After diagnosing and repairing any fault in an electrical
circuit and any other repairs needed, the following
steps should be taken:
1. Test run the machine to verify that the condition
has been repaired.
2. Cycle the circuit at least ten times.
3. Allow the machine to cool down for a couple of
hours.
4. Re-test the machine to verify the condition does
not re-appear.
5. If the condition does not re-appear, return the
machine back to service.
12