4.8 Service procedure Maintenance When required In areas where the water is hard, always add KOMATSU genu- ine corrosion resistor agent KI. One packet of corrosion resistor (No. 600-411-1120) agent contains 100g (0.22 lb). The standard density of the mixture should be 7g/liter (0.065 oz/US gal). 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 Antifreeze is flammable, so keep it away from flame. Antifreeze is toxic.
When removing the drain plug, be care- ful not to get water containing antifreeze on you. If it gets in your eyes, flush your eyes with large amount of fresh water and see a doctor at once. 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. z Prepare a container to catch drained coolant: Min 17 liters (4.49 US gal) capacity. z Prepare a water inlet hose. 1. Stop the engine. 2.
Check that the cooling water temperature has gone down enough to make it possible to touch the radiator cap surface by hand, then turn radiator cap (1) slowly until it contacts the stopper to release the pressure. 1 3. Following this, push radiator cap (1), turn it until it contacts the stopper, then remove it. GK015010 WA150-5H – VEAM934100 4-27 Min. atmospheric temperature °C -10 -15 -20 -25 -30 °F 14 5 -4 -13 -22 Amount of antifreeze Liter 5.10 6.12 6.97 7.82 8.50 US gal 1.35 1.62 1.84 2.07 2.25 Amount of water Liter 11.90 10.88 10.03 9.18 8.50 US gal 3.14 2.87 2.65 2.42 2.24 WARNING WARNING