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Maintenance
The ratio of antifreeze to water depends on the ambient temper-
ature, but to obtain the corrosion resistance effect, a minimum
ratio of 30% by volume is necessary.
In areas where the water is hard, add KOMATSU genuine corro-
sion resistor agent KI. One packet of corrosion resistor agent
contains 100g. The standard density of the mixture should be 7
g/litres.
When deciding the ratio of antifreeze to water, check the lowest
temperature in the past, and decide from the mixing rate table
given below. For details, see "Mixing rate of water and antifreeze
(4-41)".
It is actually better to estimate a temperature about 10°C lower
when deciding the mixing rate.
Mixing rate of water and antifreeze
Min. atmospheric
temperature
Amount of antifreeze
Amount of water
Volume ratio (%)
WARNING
Antifreeze is flammable, so keep it away from any flame.
Use city water for the cooling water.
If river water, well water or other such water supply must be
used, contact your KOMATSU distributor.
We recommend use of an antifreeze density gauge to con-
trol the mixing proportions.
WARNING
When removing drain plug, avoid pouring coolant on your-self.
PW180-7E0 – VEAM400102
°C
-5
-10
litres
4.0
5.3
litres
13.6
12.3
23
30
-15
-20
-25
6.3
7.2
8.1
11.3
10.4
9.5
36
41
46
4.11 Maintenance procedure
When required
-30
-35
-40
8.8
9.5
10.2
8.8
8.1
7.4
50
54
58
4-41
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