Komatsu PC450-8 Operation & Maintenance Manual page 392

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ATTACHMENTS ANDD OPTIONS
RECOMMENDED ATTACHMENT OPERATIONS
Pecking operations
Extending the bucket cylinder fully and thrusting to raise the
machine off the ground
Greasing
Supply grease in the correct position.
NOTICE
If the breaker is greased in an improper posture, it is filled
with more grease than necessary. As a result, soil and
sand will enter the hydraulic circuit and can damage the
hydraulic components, while the breaker is in use. There-
fore, be sure to grease the breaker, holding it in the right
posture.
6-32

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