Komatsu PW160-7H Operation & Maintenance Manual page 162

OPERATIONS AND CHECKS BEFORE STARTING ENGINE
2. Lower the safety lock lever to the UNLOCK position, switch
OFF the control lever lock switch and raise the bucket from
the ground.
3. Operate bucket control - right control lever, and arm control -
left control lever (slowly to move the bucket cylinder and arm
cylinder to the end of the stroke.
(A) Arm Out
(B) Arm In
4. Carry out bucket and arm operation for 5 minutes at full
stroke, alternating between bucket operation and arm opera-
tion at 30 second intervals.
If the swing lock switch (12) is set to the ON (actuated) posi-
tion and swing control lever is operated at full stroke, oil tem-
perature rise can be increased quicker.
NOTICE
When the work equipment is retracted, take care that it
does not interfere with the machine body or ground.
A Left swing
B Right swing
162
(C) Bucket Curl
(D) Bucket Dump
Control
lever
LOCK
lock switch
A
B
12
Left
control
lever
PW160-7H VEAM390100
OPERATION
UNLOCK
C
D
B
A