Westerbeke 38B FOUR Operator's Manual Page 53

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LUBRICATION
SYSTEM
Engine
Oil
For engine lubrication, use lubricating oil designated for diesel service. These oils are classified
according to the
API specifications into service grades CA, CB, CC
and
CD.
The
use
of
CC or higher
(CD) grades, made by well-known manufacturers is recommended.
Engine
Oil Viscosity (SAE Number)
Use
an
oil having a viscosity best suited to the atmospheric temperature. Use
of
an
all-season oil SAE
IOW-30
with minimum viscosity change under different temperatures is suggested.
Atmospheric Temperature
68° F (20° C) or higher
41° F (5° C) - 68° F (20° C)
41° F (5° C) - or lower
Viscosity
SAE 30 or IOW-30
SAE 20
or
IOW-30
SAE IOW-30
NOTE:
Do
not use
an
engine lubricating oil with
an
SAE number greater than 30
in
the engine.
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
35
and 55 psi.
NOTE: A newly started, cold engine can have
an
oil pressure reading upwards
of
60
psi. A
warmed engine can have
an
oil pressure reading as low as 35 psi. These readings will vary
depending upon the temperature
of
the engine and the load placed
on
the generator.
Engine
Oil
Change
(to include filter)
I. Draining the Oil Sump
Discharge the old oil through the sump drain hose
(attached to the front
of
the engine) while the engine
is still warm. Drain the oil oil completely, replace
the hose
in
its bracket, and replace the end cap
securely.
Always observe the oil as it is removed. A
yellow/gray emulsion indicates the presence
of
water
in
the oil. Although this condition is rare,
it
does
reqnire prompt attention to prevent serious damage.
Call a competent mechanic should water
be
present
in the oil. Raw water present
in
the oil can be the
result
of
a fault
in
the exhaust system attached to the
engine andlor siphoning through the raw water
cooling circuit into the exhaust, filling it up to the
engine.
49
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WESTERBEKE
GENERATORS
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