Kubota WG1605-G-E3 Workshop Manual page 102

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM
Alternator on Unit Test
(Before testing)
• Before alternator on unit test, check the battery terminal
connections, circuit connection, fan belt tension, charging
indicator lamp, fuses on the circuit, and abnormal noise from the
alternator.
• Prepare full charged battery for the test.
NOTE
• Be careful not to touch the rotating engine parts while
engine is running.
Keep safety distance from the engine rotating parts.
1. Start the engine.
2. When the engine is operating measure the voltage between two
battery terminals. If the voltage is between 14.2 V and 14.8 V,
the alternator is operating normally.
3. If the results of alternator on unit test are not within the
specifications, disassemble the alternator and check the each
component part for finding out the failure. See the
"DISASSEMBLING AND ASSEMBLING" and "SERVICING" for
alternator.
Regulating voltage at no
Factory specification
load
Resistance of Water Temperature Sensor
1. Disconnect the connector.
2. Measure the resistance with an ohmmeter.
3. If the resistance is not with in the factory specifications, replace
it.
Resistance Factory specification
Resistance of Temperature and Manifold Absolute Pressure
(TMAP) Sensor
1. Measure the resistance between the terminal 1 and terminal 3
of the sensor.
2. If the measurement is not in the factory specification, the sensor
is defective. Then replace it with a new one.
3. If the measurement is in the factory specification, the sensor is
correct electrically.
Factory
Resistance of
specifica-
pressure sensor
tion
(1) Terminal 1
(2) Terminal 2
1-S24
14.2 to 14.8 V
-1
at 5000 min (rpm),
25 °C (77 °F)
9Y1210318ENS0043US0
2.32 to 2.59 kΩ
at 20 °C (68 °F)
9Y1210661ENS0099US0
Terminal 1 – 5.4 to 6.6 kΩ
Terminal 3 at 0 °C (32 °F)
(3) Terminal 3
(4) Terminal 4
9Y1210661ENS0100US0
ENGINE
KiSC issued 01, 2012 A