SAFETY PRECAUTIONS FOR MAINTENANCE WARNING: Failure to follow these safety precautions may lead to a serious accident. G Always repair any loose or broken fuel hoses or oil hoses. If fuel or oil leaks, it may cause a fire. PRECAUTIONS WITH HIGH PRESSURE OIL G Do not forget that the work equipment circuits are always under pressure. G Do not add oil, drain oil, or carry out maintenance or inspec- tion before completely releasing the internal pressure. G If oil is leaking under high pressure from small holes, it is dan- gerous 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. A0055180A G If you are hit by a jet of high-pressure oil, consult a doctor immediately for medical attention. A055190A PRECAUTIONS WHEN CARRYING OUT MAINTENANCE AT HIGH TEMPERATURE OR HIGH PRESSURE G Immediately after stopping operations, the engine cooling water and oil at all parts is at high temperature and under high pressure. In this condition, if the 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 maintenance in accordance with the procedures given in this manual. Cleaning inside or cooling system, see “WHEN REQUIRED” on page 190. Checking cooling water level, hydraulic oil level, see “CHECK BEFORE STARTING” on page 202. Checking lubricating oil level, adding oil, see “USE FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE” on page 175. Changing oil, replacing filters, see “MAINTENANCE SCHEDULE CHART” on page 183. 39