Mitsubishi Montero 1987 Service Manual Page 100

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8-80
CHARGING SYSTEM
- Service Adjustment Procedures
Ignition
switch
Alternator
Voltmeter
I
lid-hi!
@
Ammeter
e Load
6EK52
(5) Disconnect the alternator output wire from the alternator “B”
terminal.
(6) Connect a DC ammeter (0 to 100 A) in series between the “B”
terminal and the disconnected output wire. Connect the (+I
lead of the ammeter to the “B” terminal and connect the (-1
lead wire to the disconnected output wire.
(7) Set the engine tachometer and connect the battery ground
cable.
Test
(1) Turn on the ignition switch and-check that the voltmeter indi-
cates the following value.
Voltage : Battery voltage
If it reads 0 V, there is an open circuit in the wire between the
alternator “S” terminal and the battery (+) or the fusible link
is blown.
(2) Start the engine. Keep all lights and accessories off.
(3) Run the engine at a speed of about 2500 rpm and read the
voltmeter when the alternator output current drops to 10 A or
less.
Result
(1) If the voltmeter reading agrees with the value listed in the
regulating voltage table below, the voltage regulator is func-
tioning correctly. If the reading is other than the standard
value, the voltage regulator or the alternator is faulty.
Regulating voltage table
Voltage regulator ambient Regulating voltage V
temperature “C (“F)
-20 (-4) 14.2-15.4
20 (68) 13.9-14.9
60 (140) 13.4-14.6
80 (176) 13.1-14.5
1 STB Revision
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