Toro Workman 3000 Series, Service Manual

Page: 175 / 306

Electrical System Quick Checks
Battery Test (Open Circuit Test)
Use a multimeter to measure the voltage between the
battery terminals.
Set the multimeter to the DC volts setting. The battery
should be at a temperature of 60
o
to 100
o
F (16
o
to 38
o
C). The ignition key should be in the OFF position and
all accessories turned off. Connect the positive (+) meter
lead to the positive battery post and the negative (–) me-
ter lead to the negative battery post.
NOTE: This test provides a relative condition of the bat-
tery. Load testing of the battery will provide additional
and more accurate information (see Battery Service in
Service and Repairs section of this Chapter).
Voltage Measured Battery Charge Level
12.68 v (or higher) Fully charged (100%)
12.45 v 75% charged
12.24 v 50% charged
12.06 v 25% charged
11.89 v 0% charged
Charging System Test
This is a simple test used to determine if a charging sys- Start the engine and run at high idle. Allow the battery to
tem is functioning. It will tell you if a charging system has charge for at least 3 minutes. Record the battery voltage.
an output, but not its capacity.
Test results should be (example):
Use a multimeter set to the DC volts setting. Connect the
positive (+) meter lead to the positive battery post and
the negative (–) meter lead to the negative battery post.
Leave the test leads connected and record the battery
voltage.
NOTE: Upon starting the engine, the battery voltage will
drop and then should increase once the engine is run-
ning.
At least 0.50 volt over initial battery voltage.
Initial Battery Voltage = 12.30 v
Battery Voltage after 3 Minute Charge = 12.80 v
Difference = +0.50 v
NOTE: Depending upon the condition of the battery
charge and battery temperature, the charging system
voltage will increase at different rates as the battery
charges.
Workman 3000/4000 Series Page 8 – 5 Electrical System
Electrical
System