Komatsu PC220LC -8 Operation & Maintenance Manual page 195

MACHINE OPERATIONS AND CONTROLS MACHINE OPERATIONS AND CONTROLS
NOTICE
When the work equipment is retracted, take care that it does not interfere
with the machine body or ground.
6. Move right work equipment control lever (5) slowly in the
direction to pull in the bucket (D). Operate the lever to the end
of its travel and hold it in position for 30 seconds.
7. Move right work equipment control lever (5) slowly in the
direction to push out the bucket (C). Operate the lever to the
end of its travel and hold it in position for 30 seconds.
8. Next, move left work equipment control lever (6) slowly in the direction to pull in the arm (B). Operate the lever
to the end of its travel and hold it in position for 30 seconds.
9. Move left work equipment control lever (6) slowly in the direction to push out the arm (A). Operate the lever to
the end of its travel and hold it in position for 30 seconds.
10. Repeat the operation in Steps 6 to 9 for 5 minutes.
11. Check that hydraulic oil temperature monitor (7) is displaying
the correct temperature.
If the hydraulic oil temperature monitor is not displaying the
correct temperature (it is displaying low temperature), repeat
Steps 6 to 10 until the display is the correct temperature.
(A) Display when temperature is correct: Monitor background
(B) Display when temperature is low: Monitor background (C)
12. Check that engine coolant temperature monitor (1) displays
the correct temperature.
(A) Display when temperature is correct: Monitor background
(B) Display when temperature is low: Monitor background (C)
If it displays low temperature, carry out additional warm up of
the engine until engine coolant temperature monitor (1)
displays the correct temperature.
For details of the procedure, see "Engine Warm Up (PAGE
3-136)".
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(C) is blue
is white
(C) is blue
is white
OPERATION OPERATION