WARNING: Failure to follow these safety precautions may lead to a serious accident. SAFETY ! Do not forget that the work equipment circuits are always under pressure. ! Do not add oil, drain oil, or carry out maintenance or inspection before completely releasing the internal pressure. ! If oil is leaking under high pressure from small holes, it is dangerous if the jet of high-pressure oil hits your skin or enters your eyes. Always wear safety glasses and thick gloves, and use a piece of cardboard or a sheet of wood to check for oil leakage. ! If you are hit by a jet of high-pressure oil, consult a doctor immediately for medical attention. !
Immediately after stopping machine operations, the engine cooling water and oil at all parts are at high temperatures and under high pressure. In this condition, if the radiator cap is removed, or the oil or water are drained, or the filters are replaced, this may result in burns or other injury. Wait for the temperature to go down, then carry out the inspection and mainte- nance in accordance with the procedures given in this manual. Clean inside of cooling system check lubricating oil level, add oil ц see "24.2 WHEN REQUIRED" on page 3-31. Checking cooling water level, engine oil pan level, brake oil level, add oil or water ц see "24.3 CHECK BEFORE STARTING" on page 3-42.
Checking hydraulic oil level, adding oil ц see "24.5 EVERY 100 HOURS SERVICE" on page 3-44. Changing oil, replacing filters ц see "24.6 EVERY 250 HOURS SERVICE" on page 3-47. 1-33 PRECAUTION HIGH PRESSURE OIL PRECAUTIONS WHEN CARRYING OUT MAINTENANCE AT HIGH TEMPERATURE OR HIGH PRESSURE