COLD WEATHER OPERATION COLD WEATHER OPERATION PREPARATION FOR LOW TEMPERATURE l Add antifreeze in the cooling water + Cautions for using antifreeze Permanent type antifreeze shall be used. l Change lubrication oil by that with prescribed viscosity. When deciding the ratio of anti- freeze to water, check the lowest I) l Fuel of low pour point shall be used. ASTM D975 No. 1 diesel fuel should be used at at- mospheric temperature lower than - 10°C. 2) Soft water (ex: city water) shall be used as mixing water. Cooling systems must be thor- oughly flushed before filling with antifreeze mixture. 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. 3) 4) When the climate becomes warmer so that antifreeze (with- out corrosion inhibitor) is not needed, replace by clean water (ex: city water) after perfectly cleaning the cooling system. A Take care for fire as antifreeze Mixing rate of water and antifreeze Min. atmospheric temperature - 5 -10 -15 -20 -25 -30 (“C) Amount of antifreeze 73 95 114 130 146 158.5 (Q) is inflammable. Amount of water(Q) 244 222 203 187 171 158.5 * When operating the machine at temperatures below - 2O”C, special equipment is needed. Contact your Komatsu distributor for details. Coolant capacity: 3 17 R - 62 - W-04289