MAINTENANCE 18. OUTLINES OF SERVICE Use genuine Komatsu parts for replacement. When changing or adding oil, do not use a different type of oil. Unless otherwise specified, the oil and coolant used at the time of shipment from the factory are as shown in the table below. 18.1 OUTLINE OF OIL, FUEL, COOLANTS 18.1.1 OIL Oil in the engine and work equipment deteriorates with use because of the extremely severe conditions (high temperature, high pressure). Use only oil that matches the grade and temperature specifications listed in the Operation and Maintenance Manual. Replace the oil after the specified interval, even if the oil doesn’t appear dirty.
Oil in the wheel loader corresponds to blood in the human body, so always be careful when handling it to prevent any impurities (water, metal particles, dirt, etc.) from entering the system. The majority of problems with machines are caused by the entry of such impurities. Take particular care not to let any impurities enter the system when storing or adding oil. Never mix oils of different grades or brands. Always maintain oil at specified levels. Having too much oil and having too little oil both cause problems. Oil in the work equipment should appear clear. If not, there probably is water or air entering the circuit. In such cases, please contact your distributor.
When changing the oil, always replace the related filters at the same time. It is recommended that an analysis be made of the oil periodically to check the condition of the machine. For those who wish to use this service, please contact your distributor. 3-5 WA420-3MC Item Kind of fluid Engine oil pan SAE 15W-40 API classification CF4 or CF-4/SG Transmission case SAE 10W API classification CD Axle (Front and rear) AX075 Hydraulic tank SAE 10W API classification CD Linkage Pins Lithium base grease No. 2 Fuel ASTM D975 No. 2 (However, ASTM D975 No. 1 is used for the winter season (October to March) Radiator 50/50 Mixture of Komatsu Super Coolant (ethylene glycol) and water