Engine/Generator Components - Kohler 15CCO Service Manual

With the generator set battery connected, the wiring
harness and some engine/generator components can
be checked with a voltmeter as described in
Figure 7-12. Place the controller or remote start/stop
Component
Hourmeter and Red test clip to hourmeter
wiring (+) terminal. Black test clip
to (--) terminal.
None (see Remarks)
B1 and B2 stator Disconnect B1/B2 leads.
auxiliary winding Connect AC voltmeter to
leads.
NOTE: Voltage can only be
measured momentarily
since unit will not continue
to run after start switch is
released.
Fuel solenoid Red test clip to #6 lead of
(three-lead) solenoid and black test clip
to engine block (ground).
Place controller switch to
Start position. STOP
generator set.
None (see Remarks)
Figure 7-12. Engine/Generator Component Testing with Voltmeter
7-14 Component Testing and Adjustment

Engine/Generator Components

Voltmeter Connections
switch in the prescribed position and check for 12 volts
DC at each component using a DC voltmeter. This will
verify that the switches function and 12 volt DC is
present at each component.
Remarks
Voltmeter setting 12 volts.
Disconnect hourmeter
leads and apply 12 volts
DC to hourmeter.
NOTE: Hourmeter is
polarity sensitive.
Voltmeter setting 20 volts
AC or greater. Start
generator set by holding
Start/Stop switch in Start
and allow to reach proper
speed. Take reading and
then stop generator.
Voltmeter setting 12 volts or
greater. If lead can not be
disconnected, cut leads
and crimp-on fully insulated
push-on terminals.
Push out leads #6 and "P"
at the 4-pin connector.
Apply 12 volts DC to #6
lead and momentarily apply
12 volts DC to "P" lead.
NOTE: Apply voltage only
momentarily to "P" lead to
prevent fuel solenoid
damage. This coil draws 50
amps and is intended only
to energize the solenoid.
Results
If wiring harness is
good--12 volts DC or
greater. To determine if
hourmeter is good, proceed
to next step.
If good--hourmeter will
operate.
Reading of 12--15 volts
indicates B1/B2 winding is
good.
If wiring is good--12 volts
DC. To determine if fuel
solenoid is good, proceed
to next step.
If good--fuel solenoid will
energize and move plunger
when voltage is applied to
"P" lead and remain
held in after "P" lead is
disconnected as long
as #6 lead has voltage
applied to it.
TP-5606 6/02