Komatsu D155A-6 Operation & Maintenance Manual page 111

EXPLANATION OF COMPONENTS
RIPPER CONTROL LEVER
This lever (8) is used to operate the ripper.
Lifting control
(a) RAISE
(b) HOLD: Ripper is stopped and held in the same position.
(c) LOWER
Tilting control
(A) Digging angle reduced: Cutting angle (α) becomes smaller.
(B) Digging angle increased: Cutting angle (α) becomes larger.
PIN PULLER CONTROL SWITCH
Switch (9) is used to operate the pin puller.
(a) PULL OUT: Pin is pulled out.
(b) PUSH IN: Pin is pushed in.
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OPERATION
(F)Front of the machine