ENGINE ELECTRICAL
-
Charging System
8-225
(7) Set an engine tachometer.
NOTE:
l For engine tachometer setting procedure,
refer to GROUP 9
-
Service Adjustment
L
Procedures.
(8) Connect the negative cable of the battery.
(9) Leave the engine hood opened.
(lO)Start the engine.
(1 l)Adjust the generator load by turning the head-
lamps or smaller lamps ON or OFF so that the
ammeter will indicate a somewhat higher value
than 30A with the engine running at 2500 rpm.
(12)Slowly
lower the engine speed to adjust the
engine speed so that the ammeter will indicate
30A. Take the reading of the voltmeter at the
time.
Liniit value: 0.3V max.
(0.4V
max. in case of ammeter
reading of 40A)
(13)lf the voltmeter reading is in excess of the limit
value, a defective generator output line is
suspected. Check the wiring (including fusible
link) between terminal B of the generator and
the positive terminal of the battery.
If there are problems like loosely tightened
terminals, discolored harness due to overheat-
ing, etc., make repairs and perform the test
thereafter.
L-J
(14)After the test has been completed, let the
engine run at idle. Turn off the lamps and other
devices and place the ignition switch at “OFF”.
(15)Disconnect the negative cable of the battery.
(16)Remove the test ammeter, voltmeter and en-
gine tachometer.
(17)Connect the output line of the generator to
terminal B of the generator.
(18)Reconnect the negative cable of the battery.
OUTPUT CURRENT TEST
The test is performed to check whether the gener-
ator has the capability to output expected current.
(1)
(2)
(3)
(4)
(5)
(6)
Before the output current test is performed, be
sure to check the following items.
l Mounted condition of generator
l Battery condition (Refer to GROUP 8
-
Battery.)
NOTE:
The battery used for output current test is
preferably in a slightly discharged condition.
With a fully charged battery, shortage of load
could result in incorrect test.
l Generator drive belt tension (Refer to
GROUP 0
-
Maintenance Service.)
l Fusible link condition
0
Whether strange sound is heard from gener-
ator during engine rotation
Place the ignition switch at “OFF”.
Disconnect the negative cable of the battery.
Disconnect the output line of the generator from
terminal B of the generator.
Connect a
O-IOOA
test DC ammeter between
terminal B and the disconnected output line in
series. (Connect the positive lead wire of the
,ammeter to terminal B and connect the negative
lead wire of the ammeter to the disconnected
output line.)
CAUTION:
l Since a large current flows, firmly secure all
the connections with bolts and nuts. Be sure
to avoid the method of fastening connec-
tions with clips.
NOTE:
l Use of a clamp type ammeter is recom-
mended, as it allows measurements to be
made without disconnecting the output line
of the generator.
Connect a 0-20V test voltmeter between termin-
al B and ground. (Connect the positive lead wire
of the voltmeter to terminal B and connect the
negative lead wire of the voltmeter to a good
ground.)
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