Komatsu PW98MR-10 Operation & Maintenance Manual page 198

MACHINE OPERATIONS AND CONTROLS
"State B"
When setting the machine posture to state B, follow the
procedure below.
1)
Start the engine, and run it at low speed.
2)
Lower the blade and/or the outriggers to the ground.
3)
Extend the arm and bucket cylinders.
4)
Swing the boom to the center.
5)
Raise the boom at maximum RAISE position.
6)
Stop the engine.
2.
Check sight gauge (G) through the small inspection win-
dow on the right cover.
If the oil level is in the range shown below, it is proper.
State A: Within range "a"
State B: Within range "b"
If the oil level is below level L, the hydraulic oil is insuffi-
cient. Perform the following procedure.
1)
Open dirt cover (1).
2)
Lock securely with hood support lever (2).
3)
Loosen bolt (3) and remove plate (4) on top of oil filler
port (F).
4)
Remove the cap of oil filler port (F) gradually to re-
lease the internal pressure.
5)
Remove the cap of oil filler port (F).
6)
Add oil through oil filler port (F) until the oil level
comes between levels H and L of sight gauge (G).
NOTICE
Do not add oil above H line. It may damage the oil
circuit and cause the oil to spurt out.
If the refilled oil exceeds H level, swing the upper
structure until drain plug (P) beneath the hydraulic
tank comes between the right and left wheels and
stop the engine. Wait for the oil to cool down suffi-
ciently, then drain the excess oil through drain
plug (P) into an oil container.
REMARK
The oil level will vary depending upon the oil temperature. Accordingly, use the followings as a guide:
• Before starting the operation: Around L level
(Oil temperature 10 to 30 °C)
• Normal operation: Around H level
(Oil temperature 50 to 80 °C)
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WENAM00061
OPERATION