5 Maintenance Engine – changing oil Frequent skin contact with used engine oil may cause skin lesions! Thoroughly remove any engine oil adhering to your skin. Hot engine oil may cause scalding! Wear rubber gloves and place the oil trough under the discharge opening in such a way that you do not get in contact with the oil when it is running out. There is danger of severe accidents, if you perform maintenance work at a machine that has not been parked and secured correctly! Park the machine on a solid, even surface and secure it, before you start to perform maintenance work. NOTE Do not perform an oil change, unless the engine is switched off and at operating temperature. 1.
Before you start maintenance work, park and secure the machine as described in the chapter "5.1. Maintenance guide" on page 5-2. 1 2. Put the oil trough under the drain screw (arrow). 3. Remove the cover cap (1) from the drain valve. 4. Screw on the drain hose (2) on the drain valve. This will cause the drain valve to open. 5. Drain the oil. 6. Check the removed oil for metal parts or undesired material. If the oil contains such particles, inform the responsible Komatsu dealer. Detach drain hose (2) from drain valve. This causes the drain valve to close. 7. Fit cap back onto drain valve (1). 5-52 WA90-5 – VEAM270100 WARNING WARNING CAUTION CAUTION