Kohler 10EOR, Service

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TP-6073 4/06 51 Section 8 Component Troubleshooting
Section 8 Component Troubleshooting
8.1 Engine/Generator Components
Sulfuric acid in batteries.
Can cause severe injury or death.
Wear protective goggles and
clothing. Battery acid may cause
blindness and burn skin.
WARNING
Battery gases. Explosion can cause severe injury or
death. Battery gases can cause an explosion. Do not smoke
or permit flames or sparks to occur near a battery at any time,
particularly when it is charging. Do not dispose of a battery in a
fire.
To prevent burns and sparks that could cause an
explosion, avoid touching the battery terminals with tools or
other metal objects. Remove all jewelry before servicing the
equipment. Discharge static electricity from your body before
touching batteries by first touching a grounded metal surface
away from the battery. To avoid sparks, do not disturb the
battery charger connections while the battery is charging.
Always turn the battery charger off before disconnecting the
battery connections. Ventilate the compartments containing
batteries to prevent accumulation of explosive gases.
With the generator set battery connected, check the
wiring harness and some generator set components
with a voltmeter as described in Figure 8-1. Place the
controller or remote start/stop switch in the prescribed
position and check for 12-volt DC at each component.
The presence of 12-volt DC confirms that the switch and
the power supply are functioning satisfactorily.
Component Voltmeter Connections Remarks Results
Hourmeter None (see remarks) Disconnect the hourmeter leads and
apply 12-volt DC to hourmeter. If functional, the
hourmeter
apply 12 volt DC to hourmeter.
NOTE: Hourmeter is polarity
sensitive.
hourmeter
operates.
B1 and B2 stator
auxiliary winding Disconnect the B1/B2 leads. Connect
the AC voltmeter to the leads.
NOTE: Voltage is measured
momentarily because the unit stops
running after the start switch is
released.
Voltmeter setting 20 volts AC or
greater. Start the generator set by
holding the start/stop switch in the
START position and allow the
generator set to reach its rated speed.
Take the reading and then stop the
generator set. Reading of
12--15 volts
indicates the
B1/B2 winding is
functional.
Figure 8-1 Engine/Generator Component Testing with Voltmeter