24. SERVICE PROCEDURE Use a permanent type of antifreeze. If, for some reason, it is impossible to use permanent type antifreeze, use an antifreeze containing ethylene glycol. Stop the machine on level ground when cleaning or changing the coolant. 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 (50°F) lower when deciding the mixing rate. Mixing rate of water and antifreeze ¤ WARNING When removing the drain plug, be careful not to be covered with the drained coolant. Antifreeze is flammable, so keep it away from any flame.
We recommend use of an antifreeze density gauge to control the mixing proportions. Use city water for the cooling water. If river water, well water or other such water supply must be used, contact your Komatsu distributor. 3-24 Min. atmospheric temperature °C –10 –15 –20 –25 –30 –35 –40 –45 –50 °F 14 5 –4 –13 -22 –31 –40 –49 –58 Amount of antifreeze ¬ 50 59.5 68 76 83 89 96 101 105 US gal 13.2 15.7 18.0 20.1 21.9 23.5 25.4 26.7 27.7 UK gal 11.0 13.1 15.0 16.7 18.3 19.6 21.1 22.2 23.1 Amount of water ¬ 115 105.5 97 89 82 76 69 64 60 US gal 30.4 27.9 25.6 23.5 21.7 20.1 18.2 16.9 15.9 UK gal 25.3 23.2 21.3 19.6 18.0 16.7 15.2 14.1 13.2