Climates
Above 40°C
40°
-_5°C
_5°
- _15°C
Below-15°C
Viscosity SAE
#40
SAE
#30
SAE
#20
SAE#1aw
Except
in
an frigid region, SAE
30
can be applied throughout the year.
2-3 Time
to
change engine
oil
Time
to
change engine
oil
is
indicated
as
a general standard
in
Lubrication Table. It
may, however, get dirty and deteriorate very soon and need
to
be changed much ahead
of
the
given
time, under some conditions of
use,
and be very show
to
do
so
under
others.
Practically speaking, the user himself should judge whether it can stand further
use
or
must be changed. For this,
we
recommend a simple test called "spot test", where
some drops of used engine
oil
are put on filter paper
to
see
how far it has deteriorated
and got dirty. For details about this test, ask the manufacturer
of
the oil.
3
DIAPHRAGM
OIL (Pneumatic Governor)
Diaphragm
oil
is
a kind of leather oil intended
to
prevent the
aging
or deterioration of
sheep
skin
diaphragm placed
in
pneumatic governor
of
fuel injection pump, and
to
keep
governor action smooth and sensitive.
Use
always those brands indicated on· Lubrication
Table, and never substitute by engine
oil
(mineral oil).
4
COOLING
WATER
4-1
Required quality
Cooling water must be clean and soft.
Never
use any water
that
contains salt or
is
near a mine
or
a spa, because it will
scale
hard water jacket and corrode cylinder liners
along their outer circumference.
4-2 Handling
of
cooling system
1)
In
leaving
the
engine idle for many hours, especially
in
cold weather, open
all
drain cocks
to
thoroughly drain off cooling water.
2)
When
the engine
has
overheated and has been empty
of
water, never pour cold
water
in
radiator.
3)
For the use of
an
antifreeze, refer to Sect. 8, "Handling
in
Cold Weather"
Chap.
1.
-
10-
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