Westerbeke WPDS-20 Manual del operador Pagina 47

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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 AFI specifications Into service grades
CA,
CB, CC and CD. The use
of
CC
or
higher
(CD)
grades, made
by
well-known manufacturers
is
recommended. The oil selected should be used thereafter.
Engine
Oil
Viscosity
(SAE
Number)
Use an oil having a viscosity best suited
to
the atmospheric temperature. Use
of
an all-season oil
SAE
10W-
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
1
OW-3~
SAE 20
or
1
OW-3~
SAE 10W-30
NOTE: Do not
usean
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
(see page 24).
During normal operation, the oil pressure will range between
30 and 60 psi. At idle speed, the oil pressure
will range between
20
and 35 psi. At the time of cranking, the oil pressure will rise proportionately with speed.
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 speed at which the engine
is
running.
47
Westerbeke Diesel
Engines
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