The anti-rust agent can delay or prevent the engine water jacket wall and the radiator from
rusting or corrosion. The air in the coolant will produce a lot of bubbles under the stirring
of the blades of the water pump, these bubbles will hinder the coolin g water jacket wall
from heat radiating. The foam suppressing agent can effectively inhibit the generation of
the bubble. Coloring agent normally makes the coolant presenting blue-green or yellow for
identification. In the process of engine operation, the additive will gradually deplete.
Therefore,
it
is quite necessary to replace the cooling liquid periodically.
Therefore, the normal maintenance of the engine coolant not only functions as good anti-
rust, anti-corrosion, furring generation to a variety of metals within the cooling system, but
also effectively reduces the cavitations erosion (cavitations erosion is a kind of damage
phenomenon of the fluid engineering, and the outer wall of diesel engine cylinder liner will
also produce metal falling off resulting from cavitations corrosion, and will gradually form a
honeycomb-like with different diameter sizes, and is damaged finally).
1.
1.
1.
1. When
When
When
When the
the
the
the temperature
temperature
temperature
temperature is
is
is
is below
below
below
below 0
0
0
0 ℃ ,
,
,
,
it
it
it
it
is
is
is
is necessary
necessary
necessary
necessary to
to
to
to
inspect
inspect
inspect
inspect the
the
the
the coolant
coolant
coolant
coolant concentration
concentration
concentration
concentration regularly.
regularly.
regularly.
regularly.
2.
2.
2.
2. As
As
As
As for
for
for
for the
the
the
the region
region
region
region where
where
where
where the
the
the
the engine
engine
engine
engine is
is
is
is operating
operating
operating
operating above
above
above
above 0
0
0
0 ℃ year
year
year
year around,
around,
around,
around, the
the
the
the
water
water
water
water via
via
via
via anti-rust,
anti-rust,
anti-rust,
anti-rust, and
and
and
and anti-furring
anti-furring
anti-furring
anti-furring treatment
treatment
treatment
treatment can
can
can
can be
be
be
be used
used
used
used as
as
as
as coolant,
coolant,
coolant,
coolant, and
and
and
and
it
it
it
it
is
is
is
is
forbidden
forbidden
forbidden
forbidden to
to
to
to use
use
use
use untreated
untreated
untreated
untreated water
water
water
water as
as
as
as the
the
the
the engine
engine
engine
engine coolant.
coolant.
coolant.
coolant.
5.7.2
5.7.2
5.7.2
5.7.2 ADDING
ADDING
ADDING
ADDING COOLANT
COOLANT
COOLANT
COOLANT
�
The new machine or the engine after
cleaning the cooling system requests to add
coolant, or in case of adding coolant due to
weather conditions, the freezing point of the
coolant to be chosen should be at least 5 ℃
lower than the local minimum temperature.
The total volume of engine cooling system is of
about 48L, while the water inlet room of the heat
radiator in the cooling system should contain 6%
of the total volume as expansion volume and at
least 11% of the total volume of reserving water.
See right f igure:
Warning
Warning
Warning
Warning
Inlet water
pipe of heat
radiator
Upper water chamber of
heat radiator
E Expansion
space is of at least
6%
D reserving water
is of at least 11%
Bypass of
small cycling
(inside the
engine)
Outlet water
pipe of heat
radiator
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