wsm Kubota L4100, Workshop Manual

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ELECTRICAL SYSTEM L4100, WSM
9-S16
(EU)
(8) Charging System
Alternator
1. Disconnect the 2P connector (3) from alternator after turning the
main switch OFF .
2. Perform the following checkings.
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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.
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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 specifications,
disassemble the alternator and check the IC regulator.
(Reference)
• Once the engine has started, the alternator temperature rises
quickly up to an ambient temperature of 70 to 90 °C (158 to
194 °F). As the temperature goes higher than 50 °C (122 °F),
the alternator voltage slowly drops; at higher than 100 °C
(212 °F), it drops by about 1 V.
WSM000001ELS0014US0
(1) B Terminal
(2) Alternator
(3) 2P Connector
Voltage
(Main switch at
OFF )
B terminal – Chassis Approx. battery voltage
Voltage
(Main switch at
ON )
IG terminal – Chassis Approx. battery voltage
(1) B Terminal
(2) Alternator
(3) IG Terminal
(4) L Terminal
Voltage Factory specification More than 14 V
(1) Voltmeter
(2)
B Terminal
(3) Jumper Lead
(4) IG Terminal
(5) L Terminal
(6) 2P Connector
KiSC issued 08, 2012 A