Toro Workman 3000 Series Service Manual page 83

Alternator Current Output
1. Disconnect the battery ground (–) cable.
2. Install an ammeter between the positive (+) terminal
of the battery and terminal "B" of the alternator.
3. Ground alternator terminal "B" through a voltmeter.
4. Connect the battery ground (–) cable.
5. Check to make sure voltmeter reads battery voltage.
If voltmeter reads 0 V, check for open circuit between al­
ternator "B" terminal and battery (–) terminal, a blow fus­
ible link or poor grounding.
NOTE: After starting the engine, charging current drops
quickly. The following step must be done quickly to read
maximum current value correctly.
6. Turn on all electrical loads, start the engine, quickly
run up to 2500 rpm and read maximum indication on am­
meter. Reading should be higher than limit value.
Limit
NOTE: Nominal output is shown on name plate affixed
to alternator body. Output current changes with electri­
cal load and temperature of alternator. Nominal output
current may not be obtained if electrical load at time of
test is small. Before testing, turn on headlights while ve­
hicle is not running to partially discharge battery.
Workman 3000/4000 Series
28 A
Page 3 – 45
Ignition
Switch
Battery
Charging
indicator
L
B
G
_
+
+
Voltmeter
Ammeter
Figure 67
Liquid Cooled Gas Engine
Load
_