Kubota GL6000A-AU-B Workshop Manual page 147

GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
Generator
Trouble
Voltmeter Indicates Measure the
Normal Voltage But voltage at the
No Output Voltage output terminal
Is Delivered. using a voltmeter.
(250 V at AC range)
Voltmeter Does Not Measure the
Indicate Any voltage at the
Voltage and Also output terminal
Output Voltage Is using a voltmeter.
Not Delivered (250 V at AC range)
Breaker Trips OFF Measure the
voltage at the
output terminal
using a voltmeter.
(250 V at AC range)
Checking Method
Output voltage is
0 V.
Output voltage is
0 V.
Only slight output
voltage is delivered
Output voltage is
normal
Measurement
Operating Possible Cause
Condition
Circuit breaker is
OFF
Improper contact of
output terminal or
receptacle
Improper contact of
the NFB wiring part
(inside the control
box)
Defective NFB
Disconnected wiring
harness (inside the
control box)
Disconnected stator
coil
Lack of residual
magnetism
Excessive wear of
brush or improper
contact of it
Disconnected rotor
coil
Defective A.V.R.
Improper contact of
the connector for
A.V.R. & stator
Excessive wear of
brush or improper
contact of it
Abnormality of
loading circuit
2-S2
GENERATOR
Countermeasure
Set the circuit
breaker to ON. If it
goes OFF again,
check the cause
(overload, short
circuit, etc.).
Set the circuit
breaker to ON after
removing the
cause.
Repair or replace
Check wiring and
repair
Replace
Check wiring and
repair
Repair or replace
Replace rotor
Replace brush and
clean the contact
surface of it
Repair or replace
Replace
Check and repair
Replace brush and
clean the contact
surface of it
Locate the cause
(short-circuit, or
overload, etc.) and
remove
KiSC issued 06, 2016 A