2.4 Precautions for maintenance Safety Repair welding Welding operations must always be carried out by a qualified welder and in a place equipped with proper equipment. There is a hazard of gas, fire, or electrocution when carrying out welding, so never allow any unqualified personnel to carry out welding. Removing battery terminal When repairing the electrical system or when carrying out elec- trical welding, remove the negative (-) terminal of the battery to prevent the flow of current. Precautions with high-pressure oil The hydraulic system is always under internal pressure.
When inspecting or replacing piping or hoses, always check that the pressure in the hydraulic circuit has been released. If the circuit is still under pressure, it will lead to serious injury, so always do as follows. z When carrying out inspection and maintenance of the pres- sure, release the pressure before starting. For details, see "Maintenance with engine running (2-30)". Do not carry out inspection or replacement work with the circuit under pres- sure. z If there is any leakage from the piping or hoses, the sur- rounding area will be wet, so check for cracks in the piping and hoses and for swelling in the hoses. When carry out inspection, wear safety glasses and leather gloves.
GK032082 z There is a hazard that high-pressure oil leaking from small holes may penetrate your skin or cause blindness if it con- tacts your eyes directly. If you are hit by a jet of high-pres- sure oil and suffer injury to your skin or eyes, wash the place with clean water, and consult a doctor immediately for medi- cal attention. 2-34 WA150-5H – VEAM934100