Installation manual
LUBRICATION
SYSTEM
DESCRIPTION
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
various
lubricating
points
in
the
engine.
The
oil
then
returns
to
the
oil
sump
to
repeat
the
continuous
cycle.
The
gear-driven
oil
pump
is
built
into
the
oil
sump.
The
oil
is
pumped
through
a
spin-on
type
oil
filter
(Model
IIA-I
only)
to
the
main
bearing
and
connecting
rod
bearing.
The
piston,
cylinder
liner
and
rocker
arms
are
splash-
lubricated.
There
is
an
oil
strainer
in
the
crankcase
(see
Crankcase/Oil
Strainer
in
the
MAlNIENANCE
SCHEDULE
for
maintenance
information.
A
crankcase
breather
valve
is
integrated
into
the
cylinder
head's
inlet
channel
and
is
maintenance-free.
SPIN-ON
OIL
FILTER
-H--t--
Model
11A-1
only
BREATHER
VAlVE
Oil
Pressure
Relief
Valve
There
is
an
oil
pressure
relief
valve
in
the
sump.
If
the
oil
pressure
exceeds
the
maximum
specified
value,
the
valve
opens
and
some
of
the
oil
returns
to
the
sump,
keeping
the
oil
pressure
below
its
maximum
specified
value.
Low
Oil
Pressure
Alarm
Switch
A
low
oil
pressure
alarm
switch
is
located
on
the
engine
block.
This
switch's
sensor
monitors
the
engine's
oil
pressure.
Should
the
engine's
oil
pressure
fall
below
the
specified
value,
this
switch
will
activate
a
pulsating
aIarm
on
the
control
panel.
OIL
PRESSURE
SWITCH
Model
11A-1
silo
..
ENGINE
OIL
Use
a
heavy
duty
engine
oil
with
an
API
classification
of
CF
or
CG-4
or
better.
The
SAE
grade
depends
on
the
ambient
temperature.
For
the
recommended
oil
viscosity,
see
the
following
chart:
Operating
Temperature
Oil
Viscosity
Above
68°
F
(20"
C)
SAE
30,
10W-30
or
15W-40
41°
-
68°
F
(5°
-
20°
C )
SAE
20
or
10W-30
Below
41°
F
(5°
C)
SAE10W-30
A
CAUTION:
Do
not
allow
two
or
more
brands
of
engine
oil
to
mix.
Each
brand
contains
its
own
additives;
additives
of
different
brands
could
react
in
the
mixture
to
produce
properties
harmful
to
your
engine.
CHECKING
THE
OIL
Check
the
lube
oil
level
(see
illustration)
prior
to
starting.
With
continuous
operation,
check
the
oil
level
daily
or
every
8
hOUTS.
Check
the
lube
oil
level
a
few
minutes
after
stopping
the
engine
because
lube
oil
from
the
bearings
etc.
continues
to
drain
down
into
the
oil
sump.
Disregarding
this
fact
and
not
maintaining
the
proper
oil
level
may
lead
to
overfilling,
overheating
and
engine
runaway.
If
a
top-up
is
necessary,
clean
the
area
around
the
oil
filler
to
prevent
dirt
from
entering
the
engine.
WBE
OIL
DIPSTICK
Model7A-1
$lion
Engines &
Generators
18