Komatsu PW160-7H Operation & Maintenance Manual page 326

INTRODUCTION OF ATTACHMENTS AND EXTENDING MACHINE SERVICE LIFE OPTIONS, ATTACHMENTS
Moving the chisel while carrying out impacting operations
AL069830A
Holding the chisel horizontal or pointed up when carrying out
impacting operations
Twisting the chisel when it has penetrated the rock
AL069850A
Pecking operations
Extending the bucket cylinder fully and thrusting to raise the
machine off the ground
326 PW160-7H VEAM390100