Komatsu PC138USLC Operation & Maintenance Manual page 201

MACHINE OPERATIONS AND CONTROLS MACHINE OPERATIONS AND CONTROLS
When operating the blade (blade specification) or an attachment (if
equipped), change the working mode to the attachment mode
before starting.
LOWER (a) ←→ RAISE (b)
Blade operation
Attachment operation
18. 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)
If the hydraulic oil temperature monitor displays the correct temperature, the hydraulic equipment warm-up
operation is completed.
After confirming that the hydraulic oil temperature monitor displays the correct temperature, carry out the following
procedure.
3 - 146
One way (A) ←→ Other way (B)
(C) is blue
is white
OPERATION OPERATION