HYDRAULIC - PNEUMATIC - ELECTRICAL - ELECTRONIC SYSTEMS - ELECTRICAL POWER SYSTEM
Inspecting regulated voltage (IC regulator integral type)
1.
Disconnect (+) battery terminal
(1)
and connect an
ammeter
(2)
across the line.
2.
Connect a voltmeter
(3)
between terminal L and
ground.
3.
The indication of the voltmeter must be 0 when the
starter switch
(4)
is OFF.
The indication of the voltmeter must be considerably
lower than the battery voltage when the starter switch
is ON (engine OFF).
4.
Start the engine with the ammeter terminals discon-
nected.
5.
Read the voltmeter (regulated voltage) while the am-
meter reading is 5 A or lower, 2500 min‾¹, and lamp
switches OFF.
76103784
1
Item
Spec.
Standard
Condition
Regulated voltage (at
20 °C
(
68 °F
)
12 V - 50 A
14.4 to 15.0 V
5000 min‾¹, 5 A or lower,
20
°C
(
68 °F
)
Inspecting output (a built-in IC regulator type)
1.
Disconnect the battery ground cable.
2.
Connect B terminal of the alternator to the ammeter
(1)
, then connect the voltmeter
(2)
between B termi-
nal and ground.
3.
Connect the battery ground cable.
4.
Start the engine.
5.
Immediately apply all loads such as lamps.
6.
Increase the engine speed and measure the maxi-
mum output current at the specified alternator rota-
tion speed with the voltmeter indicated the specified
value.
7.
If the measured value meets the standard, the output
is normal.
76103785
2
Standard
Item
Spec.
Terminal voltage/current
Alternator rotation speed
13.5 V/33 A or higher
2500 min‾¹
Output characteristics
(when hot)
12 V - 50 A
13.5 V/47 A or higher
5000 min‾¹
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