. MAINTENANCE SECONDARY MATERIALS FOR OPERATION HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC OIL Oil is used in the engine and hydraulic equipment under extremely severe conditions (high temperature, high pressure), so it deteriorates with time. Always use the recommended lubricant and the recommended grade to match the maximum and minimum temperatures. For details, see "RECOMMENDED FUEL, COOLANT, AND LUBRICANT (PAGE 4-16)". Even if the oil does not appear to be dirty, always change it at the specified interval. Oil corresponds to blood in the human body, so always be careful when handling it to prevent any impurities (water, metal particles, dirt, etc.) from getting in.
The majority of problems with the machine are caused by the entry of such impurities. Take particular care not to let any impurities get in when storing or adding oil. Never mix oils of different grades or brands. Always add the specified amount of oil. Having too much oil or too little oil are both causes of problems. If the oil in the work equipment is not clear, there is probably water or air getting into the circuit. In such cases, consult your Komatsu distributor. When changing the oil, always replace the related filters at the same time. We recommend you have an analysis made of the oil periodically to check the condition of the machine.
For those who wish to use this service, consult your Komatsu distributor. When using commercially available oil, it may be necessary to reduce the replacement interval for the oil. In this case, we also recommend that you use the Komatsu oil clinic. For details of the oil clinic, see "CARRYING OUT KOWA(Komatsu Oil Wear Analysis) (PAGE 4-11)". 4 - 10 SECONDARY MATERIALS FOR OPERATION Alway s use Komatsu genuine parts r eplacemen t parts, g rease or oil. When changing th e oi l or adding oil, do no t mix d ifferent t ypes of o il. When changing the type of oil, drain all the old oil and f ill completely with the new oil. Alway s replace the f ilter at the s ame time.
(There is no problem if the small amount of o il remaining in t he p iping mixe s with th e new oil. Unless otherwise specified, when the machine is shipped from the factory, it is filled with t he oil and coolant listed in the table below Item Type Engine oil pan Engine oil EO15W40-DH (Komatsu genuine) Transmission case Power train oil TO30 (Komatsu genuine) Steering hoist oil tank Power train oil TO10 (Komatsu genuine) Front suspension Rear suspension Hydraulic oil HO-MVK (Komatsu genuine) Differential case Final drive case Power train oil TO30 (Komatsu genuine) Radiator Supercoolant (AF-NAC) (Komatsu genuine) (Density:30% or above)