Komatsu PC138US-11 Operation & Maintenance Manual page 202

MACHINE OPERATIONS AND CONTROLS
METHOD FOR CHECKING OIL LEVEL IN HYDRAULIC TANK, ADDING OIL
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury. Wait for the temperature to go down, and then start the work.
• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pres-
sure, then remove it carefully.
1.
Set the machine in the posture shown in the figure.
If the machine is not set as shown in the figure, set it ac-
cording to the following procedure.
1)
Start the engine, and run it at low speed.
2)
Retract the cylinder rod for arm and bucket to the end.
3)
Lower the boom and lower the bucket tooth to the
ground.
4)
Stop the engine.
2.
Turn the staring switch key to ON position within 15 sec-
onds after stopping the engine, and move each control lev-
er (for work equipment and travel) to the full stroke in all directions.
The internal pressure is released by this operation.
3.
Stop the engine.
4.
Check the sight gauge (G) on the left side of the hydraulic
tank from inside the operator cab.
When the oil level is between the lines H and L, it is appro-
priate.
If the oil level is below level L, the hydraulic oil is insuffi-
cient. Perform the following procedure.
5.
Remove the bolts (1) (4 pieces), and remove the hydraulic
tank top cover (2).
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WARNING
k
WENAM00111
OPERATION