Komatsu WA320-5H Operation & Maintenance Manual page 45

PRECAUTIONS FOR OPERATION
PROHIBITED OPERATIONS
q It is dangerous to excavate the bottom of a rock face.
Never do this.
q It is dangerous to use the bucket or lift arm for crane oper-
ations, so do not carry out such operations.
q Do not pass the bucket over the head of other workers or
over the operator's seat of dump trucks or other hauling
equipment. The load may spill or the bucket may hit the
dump truck and cause serious injury or property damage.
EMERGENCY LOWERING SYSTEM
When the engine is not running, you can lower the work unit by
means of the pilot control lever.
q PPC control lever
To achieve this, slowly press the pilot control lever (2) forward
to the "LOWER" position.
q EPC control lever
1. Turn the key in ignition switch (1) to ON.
2. Then slowly press the pilot control lever (2) forward to the
"LOWER" position.
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SAFETY
2
9JA05377-2A
2
1
9JA05377-1A