Oil Pressure - Westerbeke 11.5KW-60Hz Service Manual

ENGINE ADJUSTMENTS
OIL PRESSURE
The engine's oil pressure, during operation, is indicated
by the oil pressore gauge on the instrument panel. Doring
nonnal operation, the oil pressore will range between 40 and
60 psi (2.8 and 4.2 kg/cm').
NOTE: A newly started, cold engine can have an oil pressure
reading up to 60 psi (4.2 kg/cm'). A warmed engine can have
an oil pressure reading as low as
35
psi
(2.5
kg/cm'). These
readings will vary depending upon the temperature of the
engine and the rpms.
OIL PRESSURE [GENERATOR]
Oil pressnre at 1800 (or 1500) rpm should maintain a reading
of 50 psi.
TESTING OIL PRESSURE
To test the oil pressure, remove the oil pressore sender, then
install a mechanical oil pressure gauge in it's place. After
wanning up the engine, set the engine speed at 1800 rpm and
read the oil pressure gauge.
OIL PRESSURE 50 psi 011800 rpm.
SENDER AND SWITCH TORQUE
9 -13 H-Ib (1.2 -1.8 m - kg).
OIL
~~~SSUIRE,
SENOOR
OIL
~RESSURE---l
...
jfn_ ...
SWITCH
OIL FILTER",~
OIL
PRI:SSLIRE----IE~~
VALVE
OIL
OIL FLOW DIAGRAM
OIL DRAIN HOS.E--'l
LOW OIL PRESSURE
The specified safe rulnimum oil pressure is 4.3
+
1.4 psi (0.3
+
0.1 kg/em'). A gradual loss of oil pressore usually indicates
a worn bearings. For additional infonnation on low ·oil pres:
sore readings, see the ENGINE TROUBLESHOOTING chart.
OIL PRESSURE RELIEF VALVE
An oil pressore relief valve is located on the engine block
just below the injection pump. This valve opens at
appoximately 50 psi [343 kpal and maintains that pressnre.
Engines
&
Generators
52
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