Kohler Power Systems 8RESV Service Manual page 96

Low Oil Pressure (LOP) Switch
For the 8RESV(L), the low oil pressure (LOP) switch is
located above the oil filter and underneath the black
blower housing. For the 10/12RESV(L), the low oil
pressure switch is located above the oil filter. See
Figure 5-24. The oil pressure switch should be
grounded when the engine is stopped (no oil pressure)
and open when the engine is running.
Note: The low oil pressure switch is the same as the Oil
Sentryt switch in the engine service manual.
Before testing the LOP switch, check the oil level and
add oil if necessary. Inspect the generator set engine for
evidence of oil leaks.
To test the LOP switch:
1. Press the OFF button to stop the engine.
2. Disconnect lead 13 from the switch.
3. Use an ohmmeter or continuity tester to verify that
the switch is closed (connected to the engine
block).
4. Start the engine and verify that the switch opens
after a few seconds.
If the LOP switch does not operate as described above,
use a gauge to check the oil pressure:
1. Press the OFF button to stop the engine.
2. Remove the LOP switch and install an oil pressure
gauge.
3. Start and run the generator set.
4. Verify that the engine oil pressure is within the
range specified in Section 1, Specifications, before
replacing the LOP switch.
96 Section 5 Component Testing and Adjustment
8RESV
1. Blower housing
2. Oil pressure switch location
10RESV/12RESV
1. Oil pressure switch location
Figure 5-24 Oil Pressure Switch Location
1
2
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