Kohler 10EOZ, Manual

Page: 55 / 80

TP-6053 7/04 43 Section 8 Component Troubleshooting
Component Ohmmeter Connections Procedure Results
Main field (rotor) Disconnect the P10 and P11
connectors and connect the
ohmmeter to P10-1 and P10-2
leads. Place the ohmmeter on the
R x 1 scale. If the resistance readings
match those specified in
Section 1, Specifications, the
rotor is functional. Low
resistance, rotor windings
shorted. High resistance,
rotor windings open.
B1/B2 stator windings Connect the ohmmeter to the
P11-1 and P11-2 leads.
Note : Disconnect P11 and J11
to perform this test.
Place the ohmmeter on the
R x 1 scale. If the resistance readings
match those specified in
Section 1, Specifications, the
B1/B2 windings are
functional. Low resistance,
B1/B2 windings shorted. High
resistance, B1/B2 windings
open.
P1 ground connection Connect the ohmmeter to the
P1-9 and ground. Place the ohmmeter on the
R x 1 scale. If functional, zero ohms
(continuity). Any other
reading indicates a poor
ground connection.
High exhaust
temperature (HET), low
coolant (LCS) safety
shutdown switches Connect the ohmmeter to the
P1-15 and engine block
(ground).
Note : Remove and
isolate the LOP switch lead.
Place the ohmmeter on the
R x 1000 scale. If functional, open circuit. Any
continuity suggests an
inoperative temperature
switch(es). Replace the
switch(es).
Low oil pressure (LOP)
safety shutdown switch Connect the ohmmeter to the
P13-1 and engine block
(ground). Place the ohmmeter on the
R x 1000 scale. This test is
not conclusive until the
temperature shutdown
switches are checked. If functional, zero ohms
(continuity). Then, disconnect
the LOP switch lead and
isolate the terminal. Meter
reading should show an open
circuit.
Figure 8-3 Engine/Generator Component Testing, Relay Controller
8.2 Remote Panels (Optional)
Kohler Co. offers three remote panels for connection to
the generator set:
D
A panel with a start/stop switch
D
A panel with a start/stop switch and two gauges
(engine oil pressure and water temperature)
D
A panel with a start/stop switch and four gauges (DC
voltmeter, engine oil pressure, water temperature,
and hourmeter)
If difficulty with the remote operation occurs, test the
switch, gauges, and gauge senders using the following
procedures. See Sections 10.5 through 10.7 for wiring
diagrams.
Troubleshooting Remote Start Panels
Generally, if the sender changes its resistance values as
its respective pressure/temperature changes, it is
working correctly. An inoperative sender will either be
open or shorted. Refer to Figure 8-4 and Figure 8-5 for
resistance values.
2-Meter and 4-Meter Panels
Temperature Resistance
60
_
C (140
_
F)
90
_
C (194
_
F)
100
_
C (212
_
F)
134.0
±
10 ohms
51.5
±
4 ohms
38.0
±
3 ohms
Figure 8-4 Water Temperature Sender Resistance
2-Meter and 4-Meter Panels
Pressure Resistance
0 kPa (0 psi)
345 kPa (50 psi)
690 kPa (100 psi)
10 ohms
80 ohms
135 ohms
Figure 8-5 Oil Pressure Sender Resistance