Oil Pressure - Westerbeke 44A FOUR-35 C THREE Operator's Manual

OIL PRESSURE
OIL PRESSURE
The engine's oil pressure, during operation, is indicated
by the oil pressure gauge on the instrument panel. During
normal operation, the oil pressure will range between 40 and
60 psi (2.8 and 4.2 kglcm
2 ).
NOTE: A newly started, cold engine can have an oil pressure
reading up to 60 psi (4.2 kglcnf). A warmed engine can have
an oil pressure reading as low as 35 psi (2.5 kglcm
2 ).
These
readings will vary depending upon the temperature of the
engine and the rpms.
/
OIL PRESSURE SWITCH"
OIL PRESSURE RELIEF VALVE
OIL LINE
OIL PRESSURE SENDOR
AS AN ACCESSORY
WITH GAUGE. .. STANDARD .
WITH THE ADMIRAL
INSTRUMENT PANEL.
An oil pressure relief valve is located on the engine block
just below the injection pump. This valve opens at
appoximately 50 psi [343 kpa] and maintains that pressure.
LOCATED JUST
UNDER THE
FUEL INJECTION
PUMP ON THE
ENGINE BLOCK.
TESTING OIL PRESSURE
The lubricating system is a pressure feeding system using
an oil pump. The engine oil is drawn from the oil sump by
the oil pump, which drives the oil, under pressure, through
the oil filter, oil cooler and various lubricating points in the
engine. The oil then returns to the oil sump to repeat the
continuous cycle. When the oil pressure exceeds the speci-
fied pressure, the oil pushes open the relief valve in the oil
pump and returns to the oil sump, keeping the oil pressure
within its specified range.
To test the oil pressure, remove the oil pressure sender, then
install a mechanical oil pressure gauge in it's place. After
warming up the engine, set the engine speed at 3000 rpm
and read the oil pressure gauge.
Oil Pressure 35.0 Ib/ill' (3.8 kg/em') or more at 3000 rpm.
Sender and Switch Torgue 9 -13 ft-Ib (1.2 -1.8 m - kg).
LOW OIL PRESSURE
The specified safe minimum oil pressure is 4.3
+
1.4 psi (0.3
+
0.1 kglcm
2 ).
A gradual loss of oil pressure usually indicates
a worn bearings. For additional information on low oil pres-
sure readings, see the
ENGINE TROUBLESHOOTING
chart.
TESTING OIL
PRESSURE
+
t-
OIL PRESSURE
I~IWESTERBEKE
, Enaines
&
Generators
22