Komatsu PC290LC-6K Operation & Maintenance Manual page 179

• When deciding the ratio of antifreeze to water, check the lowest ;
temperature in the past, and decide from the mixing rate table given
below.
It is actually better to estimate a temperature about 10
deciding the mixing rate.
Mixing rate of water and antifreeze
PC290
Min. C
atmospheric
temperature F
Amount of
antifreeze
l
Amount of
water
l
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 control the
mixing proportions.
When removing drain plug, avoid pouring coolant on yourself.
-5 -10 -15
23 14 5
5.6 7.3 8.8
18.8 17.1 15.6
WARNING
WARNING
o
C lower when
-20 -25 -30
-4 -13 -22
10 11.2 12.2
14.4 13.2 12.2
24. SERVICE PROCEDURE
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