Alternator Regulated Voltage - Toro Workman 3000 Series Service Manual

Alternator Regulated Voltage

1. Disconnect battery ground (–) cable.
2. Install an ammeter between the positive (+) terminal
of the battery and terminal "B" of the alternator.
3. Connect a voltmeter between alternator "L" and
ground.
4. Connect the battery ground (–) cable.
5. Note that the voltmeter shows 0 volts when the igni-
tion key switch is in the OFF position. The voltmeter will
show voltage lower than battery voltage when the igni­
tion key switch is in the ON position (engine not running).
6. Start the engine. Keep lights and other electrical
loads OFF.
7. Run engine at 2500 rpm. Read voltmeter when alter­
nator output current drops to 10 A or less. Regulated
voltage will decrease slightly as alternator temperature
increases.
Voltage regulator ambient
temperature �C (�F)
–20 (–4)
20 (68)
60 (140)
80 (176)
Liquid Cooled Gas Engine
Regulating voltage V
14.2 – 15.2
14.2 – 14.8
13.9 – 14.8
13.7 – 14.8
Page 3 – 44
Ignition
Switch
Battery
+
Voltmeter
Figure 66
Workman 3000/4000 Series
Alternator
L
G B
_
_
+
Ammeter