Installation manual
ENGINE
LUBRICATING
OIL
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 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.
LUBRICATION
DIAGRAM
OIL
PRESSURE
RELIEF
VALVE
OIL
PUMP
OILDRArN-~""W
OIL
PRESSURE
The engine's oil pressure, during operation,
is
indicated'
by
the
oil
pressure gauge
on
the instrument panel. During
nonnal operation, the oil pressure
will
range between
40
and
60 psi
(2.8
and
4.2
kglcm2).
NOTE:
A
newly
started,
cold engine
can
have
an
oil
pressure
reading
up
to
60 psi (4.2
kglcm
2
).
A warmed engine
can
have
an
oil
pressure
reading
as
low
as
35
psi (25kg/cm2).
These
readings
will
vary
depending
upon
the
temperature
of
the
engine
and
the
rpms.
..
A
CAUTION:
oD
not
allow
two
Dr
more
brands
of
engine
oil
to
mix.
Each
brand
contains
its
own
addi-
tives:
additives
of
different
brands
could
react
in
the
mixture
to
produce
properties
harmful
to
your
engine.
-
ENGINE
Oil
CHANGE
1.
Draining the Oil Sump. Discharge
the
used
oil througn
the
sump
drain hose (attached
to
the
front
of the engine)
while
the
engine
is
wann.
Drain
the
used
oil
completely,
replace
the
hose
in
its bracket, and replace
the
end
cap
securely.
NOTE:
Thread
size for
the
lube
oil
drain
hose
capped end
is
114NPT.
Always
observe
the
used
oil
as
it
is
removed.
A
yellow/gray emulsion indicates
the
presence
of
water in
the
oil.
Although
this
condition
is
rare, it
does
require
prompt attention
to
prevent serious
damage.
Call a
qualified
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 and/or a
siphoning of
raw
water
through
the
raw
water cooling
circuit into
the
exhaust,
filling
the
engine.
This
problem
is
often
caused
by
the
absence
of
an
anti-siphon
valve,
its
poor location or lack of maintenance.
2. Replacing the Oil Filter.
When
removing
the
used oil
filter,
you
may
find
it helpful and cleaner
to
punch a
hole
in
the
upper
and
lower portion of
the
old filter
to
drain
the
oil
from
it into a container before removing it.
This
helps
to
lessen
spillage. A small automotive filter wrench
should be helpful in
removing
the old oil
filter.
NOTE:
Do
not punch
this
hole
without first
loosening
the
jilter
to
make
certain
it
can
be
removed.
Place
some
paper
towels
and
a plastic bag
around
the
filter
when
unscrewing it
to
catch
any
oil
left
in
the
filter.
(Oil
or
any
other
fluid
on
the
engine reduces
the
engine's
cooling
ability.
Keep
your
engine clean.) Inspect
the
old
oil
filter
as
it
is
removed
to
make
sure that
the
rubber
sealing
gaSket
comes off
with
the
old oil
filter.
If
this
rubber sealing gasket
remains
sealed against the
filter
bracket,
gently
remove
it.
amm-11/16"
SOCKET
Engines & Generators
,
19