GENERAL
DESCRIPTION
When the atmospheric
temperature
is
lower
than
O°C
(32°P),
cooling water should be
drained
off
completely
or
antifreeze solution
should be added
to
prevent
the
breakdown
of
the cylinder block due
to
the frozen cooling
water. Percentage
of
the antifreeze to be added
should be a little higher than specified for the
lowest atmospheric
temperature
in
your
area.
When adding an tifreeze solution, the follow-
ing rules should be observed, otherwise, the
cylinder block will rust.
(1)
This tractor's engine
is
of
a diesel type and
its cylinder block
is
made
of
cast iron.
Therefore antifreeze solution suitable for
such a cast engine block
must
be used.
(2) Before adding mixture
of
antifreeze and
water, completely drain cooling water and
clean the radia tor using a de tergen
t.
(3) Water to be added
to
the antifreeze should
be a clean soft water.
(4) When the an tifreeze
is
no
longer required,
drain and wash the cooling system using a
detergent and fill
it
again with clean water.
Do
not
re-use
the
antifreeze solution after
it
has been drained from cooling system.
(5) Treat antifreeze carefully
as
it can remove
paint from the cylinder block.
(6) Any antifreeze solution (antifreeze and
water), even
if
it
is
a
permanent
antifreeze,
should
not
be used for more than 2 years.
(7)
Confirm.
that
there are no leaks from the
hose joints
or
cylinder head gasket.
(8) Antifreeze with correct density
to
suit the
climate in
your
area should be used.
(9) When antifreeze
is
used for a long period in
winter, measure the specific gravity fre-
quently.
1·16
Temperature, mixing ratio and specific gravity
of the antifreeze
Freezing point
°c
(OF)
-6.3
(20.7)
-9.3
(15.3)
-12.6
(9.3)
-16.2
(2.8)
-20.5
(-4.9)
-25.2
(-13.0)
-31.2
(-24.2)
-37.6
(-35.7)
-45.2
(-49.4)
1.85
gal.
(7Iiters)-
1.5
gal.
(5.67
liters)
1 gal.
(3.78
liters)
0.5
gal.
(1.89
liters)
6
75%
5
70
65
60
4
55
50
3
45
40
35
2
30
-
25
20
1 15
10
5
o
(32)
-10
(14)
Percentage of
antifreeze
-20
(-4)
%
15
20
25
30
35
40
45
50
55
60%
I
-30
(-22)
Specific gravity
at 20°C (68°F)
I
-40
(-40)
1.022
1.029
1.037
1.044
1.051
1.058
1.066
1.073
1.078
1.088
Anti freeze
Water
j ,
-50
-60°C
(-58)
(-76°F)
T
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