Alternaotr - Kubota WSM STV32 Workshop Manual

STV32 · STV36 · STV40, WSM

(14)Alternaotr

Alternator
1. Disconnect the 2P connector (3) from alternator after turning
the main switch OFF.
2. Perform the following checkings.
(1) B Terminal
(2) Alternator
Connector Voltage
1. Turn the main switch OFF. Measure the voltage between the
B terminal (1) and the chassis.
2. Turn the main switch ON. Measure the voltage between the
IG terminal (3) and the chassis.
Voltage
B terminal - Chassis
(Main switch at OFF)
Voltage
IG terminal - Chassis
(Main switch at ON)
(1) B Terminal
(2) Alternator
No-Load Test
1. Connect the 2P connector (6) to previous positions of the
alternator after turning the main switch OFF.
2. Connect the jumper lead (3) between IG terminal (4) and B
terminal (2).
3. Start the engine and then set at idling speed.
4. Disconnect the negative cable from the battery.
5. Measure the voltage between the B terminal (2) and the
chassis.
6. If the measurement is less than the factory specification,
disassemble the alternator and check the IC regulator.
Voltage Factory spec.
(Reference)
A Once the engine has started, the alternator temperature rises
quickly up to an ambient temperature of 70 to 90
194 ). As the temperature goes higher than 50
the alternator voltage slowly drops; at higher than 100
), it drops by about 1 V.
(1) Voltmeter
(2) B Terminal
(3) Jumper Lead
9-S22
ELECTRICAL SYSTEM
(3) 2P Connector
0000007940E
Approx. battery voltage
Approx. battery voltage
(3) IG Terminal
(4) L Terminal
0000005129E
More than 14 V
(158 to
(122
(4) IG Terminal
(5) L Terminal
(6) 2P Connector
0000001761E
KiSC issued 04, 2006 A
),
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