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PRECAUTIONS FOR MAINTENANCE
PRECAUTIONS WHEN USING HAMMER
When using a hammer, pins may come out or metal particles may be scattered. It is dangerous and may cause
serious personal injury or death. Always observe the following.
•
When hitting pins or bucket teeth, broken pieces may be scattered, and it may cause personal injury to the
people in the surrounding area. Always check that there is no one in the surrounding area.
•
If hard metal parts such as pins, bucket teeth, cutting
edges, or bearings are hit with a hammer, pieces might be
scattered, and it may cause serious personal injury or
death. Always wear protective eyeglasses and gloves.
•
If the pin is hit with strong force, it may come out, and in-
jure people in the surrounding area. Do not allow anyone
to enter the surrounding area.
PRECAUTIONS FOR HIGH-TEMPERATURE COOLANT
To prevent burns from boiling water or steam spurting out when
checking or draining the coolant, wait for the coolant to cool
down to a temperature where the radiator cap can be touched
by hand. Then loosen the cap slowly to release the pressure in-
side the radiator, and remove the cap.
PRECAUTIONS FOR HIGH-TEMPERATURE OIL
To prevent burns from hot oil spurting out or from touching
high-temperature parts when checking or draining the oil, wait
for the oil to cool down to a temperature where the cap or plug
can be touched by hand. Then, loosen the cap or plug slowly to
release the internal pressure and remove the cap or plug.
PRECAUTIONS FOR HIGH-TEMPERATURE PARTS
To prevent burns from touching high-temperature parts, when checking or performing maintenance after stop-
ping engine, check the parts have been cooled down to touch with bare hand before checking or maintenance.
PRECAUTIONS FOR HIGH-PRESSURE OIL
The hydraulic system is always under internal pressure. In addition, the fuel piping is also under internal pres-
sure when the engine is running and immediately after the engine is stopped. When performing inspection or
replacement of the piping or hoses, check that the internal pressure in the circuit has been released. If this is not
done, serious personal injury or death may result. Always observe the followings.
•
Do not perform inspection or replacement work with the circuit under pressure.
Release the pressure. For details, see MAINTENANCE "METHOD FOR CHECKING AND RELEASING NI-
TROGEN GAS CHARGE PRESSURE IN ACCUMULATORS (FOR CONTROL CIRCUIT)"
2-46
WENAM00130
SAFETY
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