Komatsu PC450-8 Operation & Maintenance Manual page 428

MACHINE OPERATIONS AND CONTROLS
q Do not use hitting force for demolition work.
q Do not use the swing force for hitting operations.
q Do not use the dropping force of the machine for operations.
q Do not use the travel force of the machine for operations.
7-18
HIGH REACH DEMOLITION EQUIPMENT 27M
INCORRECT
INCORRECT
INCORRECT
INCORRECT