Kubota GL6000A-AU-B Workshop Manual page 148

GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
Trouble
Output Voltage Is Measure the
too High voltage at the
output terminal
using a voltmeter.
(250 V at AC range)
Rated Output Is Not Check the variation
Available of engine revolution
or frequency when
engine is loaded or
not
Measure the
voltage at the
output terminal
using a voltmeter.
(250 V at AC range)
The Charge Lamp Measure the
Lights After the voltage at the stator
Engine Starts terminal using a
voltmeter.
(50 V at AC range)
Measurement
Checking Method
Excessive Output
Voltage
Variation of engine
speed is normal
Variation of engine
speed is excessive
Output voltage is low Lowered engine
Output voltage is
0 V.
Operating Possible Cause
Condition
Improper contact of
the connector or
disconnected wire
(R) for detection coil
Disconnected
detection coil in the
stator
Defective A.V.R.
Defective capacitor
with A.V.R.
Improper contact of
brushes
Insufficient engine
output
Defective engine
governor
rotation
Short-circuit of stator
coil or sub coil.
Short-circuit of rotor
coil
Defective A.V.R.
Improper contact of
sub coil coupler
Poor connection of
the wiring for sub coil
Disconnected sub
coil.
2-S3
GENERATOR
Countermeasure
Repair or replace
Repair or replace
Replace A.V.R.
Replace A.V.R.
Inspect and clean
the brush contact
surface, or repair or
replace the brushes
Repair engine
Repair engine
Adjustment of
rotational speed
Repair or replace
Repair or replace
Replace A.V.R.
Inspect and repair
Repair or replace
Repair or replace
9Y1211607GRS0001US0
KiSC issued 06, 2016 A