Komatsu WA20-2, Operation & Maintenance Manual

Page: 143 / 195

3-30
24. SERVICE PROCEDURE 24. SERVICE PROCEDURE
‡ 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˚C lower
when deciding the mixing rate.
Mixing rate of water and antifreeze
WA20
Min. ˚C –5 –10 –15 –20 –25 –30
atmospheric
temperature
˚F 23 14 5 –4 –13 –22
Amount of
¬ 1.0 1.3 1.5 1.7 1.9 2.1
antifreeze
US gal 0.27 0.36 0.43 0.49 0.55 0.60
UK gal 0.21 0.28 0.33 0.38 0.42 0.46
Amount of
¬ 3.2 2.9 2.7 2.5 2.3 2.1
water
US gal 0.92 0.83 0.76 0.70 0.64 0.59
UK gal 0.71 0.64 0.59 0.54 0.50 0.46
WA30
WA40, 50
Min. ˚C –5 –10 –15 –20 –25 –30
atmospheric
temperature
˚F 23 14 5 –4 –13 –22
Amount of
¬ 1.3 1.7 2.0 2.3 2.5 2.8
antifreeze
US gal 0.33 0.44 0.52 0.60 0.67 0.73
UK gal 0.28 0.36 0.44 0.50 0.56 0.61
Amount of
¬ 4.2 3.8 3.5 3.2 3.0 2.7
water
US gal 1.12 1.01 0.93 0.85 0.78 0.72
UK gal 0.93 0.85 0.77 0.71 0.65 0.60
Min. ˚C –5 –10 –15 –20 –25 –30
atmospheric
temperature
˚F 23 14 5 –4 –13 –22
Amount of
¬ 1.4 1.8 2.1 2.4 2.7 2.9
antifreeze
US gal 0.35 0.46 0.55 0.63 0.70 0.77
UK gal 0.29 0.38 0.46 0.52 0.59 0.64
Amount of
¬ 4.4 4.0 3.7 3.4 3.1 2.9
water
US gal 1.18 1.07 0.98 0.90 0.83 0.76
UK gal 0.99 0.90 0.82 0.76 0.69 0.64